# Moodle Upgrade notes

This file contains important information for developers on changes to the Moodle codebase.

More detailed information on key changes can be found in the [Developer update notes](https://moodledev.io/docs/devupdate) for your version of Moodle.

The format of this change log follows the advice given at [Keep a CHANGELOG](https://keepachangelog.com).

## 4.5.7+

### core

#### Fixed

- `restore_qtype_plugin::unset_excluded_fields` now returns the modified questiondata structure,
  in order to support structures that contain arrays.
  If your qtype plugin overrides `restore_qtype_plugin::remove_excluded_question_data` without
  calling the parent method, you may need to modify your overridden method to use the returned
  value.

  For more information see [MDL-85975](https://tracker.moodle.org/browse/MDL-85975)

## 4.5.7

### core

#### Added

- The Behat `::execute()` method now accepts an array-style callable in addition to the string `classname::method` format.

  The following formats are now accepted:

  ```php
  // String format:
  $this->execute('behat_general::i_click_on', [...]);

  // Array format:
  $this->execute([behat_general::class,' i_click_on'], [...]);
  ```

  For more information see [MDL-86231](https://tracker.moodle.org/browse/MDL-86231)
- The `\externallib_advanced_testcase` has been replaced by `\core_external\tests\externallib_testcase` and is now autoloadable.

  For more information see [MDL-86283](https://tracker.moodle.org/browse/MDL-86283)

### core_badges

#### Added

- A number of new static methods have been added to `core_badges\backpack_api` to support the new Canvas Credentials backpack provider. These methods allow you to retrieve lists of providers and regions, check if Canvas Credentials fields should be displayed, and get a region URL or API URL based on a given region ID. The new methods include `get_providers`, `get_regions`, `display_canvas_credentials_fields`, `get_region_url`, `get_region_api_url`, `get_regionid_from_url`, and `is_canvas_credentials_region`.

  For more information see [MDL-86174](https://tracker.moodle.org/browse/MDL-86174)

### core_grades

#### Added

- New 'is_gradable()' function has been created to return whether the item has any gradeitem that is GRADE_TYPE_VALUE or GRADE_TYPE_SCALE.

  For more information see [MDL-85837](https://tracker.moodle.org/browse/MDL-85837)

### core_message

#### Added

- The `contexturl` property to `\core\message\message` instances can now contain `\core\url` values in addition to plain strings

  For more information see [MDL-83080](https://tracker.moodle.org/browse/MDL-83080)

## 4.5.6

### core

#### Added

- Add a new method has_valid_group in \core\report_helper that will return true or false depending if the user has a valid group. This is mainly false in case the user is not in any group in SEPARATEGROUPS. Used in report_log and report_loglive

  For more information see [MDL-84464](https://tracker.moodle.org/browse/MDL-84464)

#### Changed

- The `\core\attribute\deprecated` attribute constructor `$replacement` parameter now defaults to null, and can be omitted

  For more information see [MDL-84531](https://tracker.moodle.org/browse/MDL-84531)
- Added a new `\core\deprecation::emit_deprecation()` method which should be used in places where a deprecation is known to occur. This method will throw debugging if no deprecation notice was found, for example:
  ```php
  public function deprecated_method(): void {
      \core\deprecation::emit_deprecation([self::class, __FUNCTION__]);
  }
  ```

  For more information see [MDL-85897](https://tracker.moodle.org/browse/MDL-85897)

### core_message

#### Added

- The web service `core_message_get_member_info` additionally returns `cancreatecontact` which is a boolean value for a user's permission to add a contact.

  For more information see [MDL-72123](https://tracker.moodle.org/browse/MDL-72123)

## 4.5.5

### core

#### Added

- - Added is_site_registered_in_hub method in lib/classes/hub/api.php to
    check if the site is registered or not.
  - Added get_secret method in lib/classes/hub/registration.php to get site's secret.

  For more information see [MDL-83448](https://tracker.moodle.org/browse/MDL-83448)
- Added a new optional param to adhoc_task_failed and scheduled_task_failed to allow skipping log finalisation when called from a separate task.

  For more information see [MDL-84442](https://tracker.moodle.org/browse/MDL-84442)
- There is a new `core/page_title` Javascript module for manipulating the current page title

  For more information see [MDL-84804](https://tracker.moodle.org/browse/MDL-84804)

### core_auth

#### Added

- A new method called `get_additional_upgrade_token_parameters` has been added to `oauth2_client` class. This will allow custom clients to override this one and add their extra parameters for upgrade token request.

  For more information see [MDL-80380](https://tracker.moodle.org/browse/MDL-80380)

### core_user

#### Added

- New method `\core_user::get_dummy_fullname(...)` for returning dummy user fullname comprised of configured name fields only

  For more information see [MDL-82132](https://tracker.moodle.org/browse/MDL-82132)

## 4.5.4

### core

#### Added

- Behat now supports email content verification using Mailpit.
  You can check the contents of an email using the step `Then the email to "user@example.com" with subject containing "subject" should contain "content".`
  To use this feature:
  1. Ensure that Mailpit is running
  2. Define the following constants in your `config.php`:
      - `TEST_EMAILCATCHER_MAIL_SERVER` - The Mailpit server address (e.g. `0.0.0.0:1025`)
      - `TEST_EMAILCATCHER_API_SERVER` - The Mailpit API server (qe.g. `http://localhost:8025`)

  3. Ensure that the email catcher is set up using the step `Given an email catcher server is configured`.

  For more information see [MDL-75971](https://tracker.moodle.org/browse/MDL-75971)
- The public method `get_slashargument` has been added to the `url` class.

  For more information see [MDL-84351](https://tracker.moodle.org/browse/MDL-84351)
- A new method, `core_text::trim_ctrl_chars()`, has been introduced to clean control characters from text. This ensures cleaner input handling and prevents issues caused by invisible or non-printable characters

  For more information see [MDL-84907](https://tracker.moodle.org/browse/MDL-84907)

### core_files

#### Added

- A new function `file_clear_draft_area()` has been added to delete the files in a draft area.

  For more information see [MDL-72050](https://tracker.moodle.org/browse/MDL-72050)

## 4.5.3

### core_question

#### Added

- Question bank Condition classes can now implement a function called "filter_invalid_values($filterconditions)" to remove anything from the filterconditions array which is invalid or should not be there.

  For more information see [MDL-83784](https://tracker.moodle.org/browse/MDL-83784)

#### Fixed

- Duplication or multiple restores of questions has been modified to avoid errors where a question with the same stamp already exists in the target category.
  To achieve this all data for the question is hashed, excluding any ID fields.

  The question data from the backup is first reformatted to match the questiondata structure returned by calling `get_question_options()` (see  https://docs.moodle.org/dev/Question_data_structures#Representation_1:_%24questiondata). Common question elements will be handled automatically, but any elements that the qtype adds to the backup will need to be handled by overriding `restore_qtype_plugin::convert_backup_to_questiondata`. See `restore_qtype_match_plugin` as an example.
  If a qtype plugin calls any `$this->add_question_*()` methods in its `restore_qtype_*_plugin::define_question_plugin_structure()` method, the ID fields used in these records will be excluded automatically.
  If a qtype plugin defines its own tables with ID fields, it must define `restore_qtype_*_plugin::define_excluded_identity_hash_fields()` to return  an array of paths to these fields within the question data. This should be all that is required for the majority of plugins. See the PHPDoc of `restore_qtype_plugin::define_excluded_identity_hash_fields()` for a full explanation of how these paths should be defined, and  `restore_qtype_truefalse_plugin` for an example.
  If the data structure for a qtype returned by calling `get_question_options()` contains data other than ID fields that are not contained in the backup structure or vice-versa, it will need to override `restore_qtype_*_plugin::remove_excluded_question_data()`  to remove the inconsistent data. See `restore_qtype_multianswer_plugin` as  an example.

  For more information see [MDL-83541](https://tracker.moodle.org/browse/MDL-83541)

## 4.5.2

### core

#### Added

- A new core\ip_utils::normalize_internet_address() method is created to sanitize an IP address, a range of IP addresses, a domain name or a wildcard domain matching pattern.

  Moodle previously allowed entries such as 192.168. or .moodle.org for certain variables (eg: $CFG->proxybypass). Since MDL-74289, these formats are no longer allowed. This method converts this informations into an authorized format. For example, 192.168. becomes 192.168.0.0/16 and .moodle.org becomes *.moodle.org.

  Also a new core\ip_utils::normalize_internet_address_list() method is created. Based on core\ip_utils::normalize_internet_address(), this method normalizes a string containing a series of Internet addresses.

  For more information see [MDL-79121](https://tracker.moodle.org/browse/MDL-79121)

#### Changed

- The `core_renderer::tag_list` function now has a new parameter named `displaylink`. When `displaylink` is set to `true`, the tag name will be displayed as a clickable hyperlink. Otherwise, it will be rendered as plain text.

  For more information see [MDL-75075](https://tracker.moodle.org/browse/MDL-75075)
- The following test classes have been moved into autoloadable locations:

  | Old location | New classname |
  | --- | --- |
  | `\core\tests\route_testcase` | `\core\tests\router\route_testcase` |
  | `\core\router\mocking_route_loader` | `\core\tests\router\mocking_route_loader` |

  For more information see [MDL-83968](https://tracker.moodle.org/browse/MDL-83968)

### core_completion

#### Added

- The method `count_modules_completed` now delegate the logic to count the completed modules to the DBMS improving the performance of the method.

  For more information see [MDL-83917](https://tracker.moodle.org/browse/MDL-83917)

### core_courseformat

#### Fixed

- HTML IDs relating to section collapse/expand have been changed in the course format templates.
  - core_courseformat/local/content/section/header #collapssesection{{num}} has been changed to #collapsesectionid{{id}}
  - core_courseformat/local/content/section/content #coursecontentcollapse{{num}} had been changed to #coursecontentcollapseid{{id}}

  For more information see [MDL-82679](https://tracker.moodle.org/browse/MDL-82679)

### core_question

#### Added

- The `get_bulk_actions()` method on the base `plugin_features_base` class has been changed to allow a qbank view object to be passed through. This is nullable and therefore optional for qbank plugins which don't need to do so.

  For more information see [MDL-79281](https://tracker.moodle.org/browse/MDL-79281)

### core_reportbuilder

#### Added

- The `core_reportbuilder_testcase` class has been moved to new autoloaded `core_reportbuilder\tests\core_reportbuilder_testcase` location, affected tests no longer have to manually require `/reportbuilder/tests/helpers.php`

  For more information see [MDL-84000](https://tracker.moodle.org/browse/MDL-84000)

### core_tag

#### Changed

- The `core_tag\taglist` class now includes a new property called `displaylink`, which has a default value of `true`. When `displaylink` is set to `true`, the tag name will be displayed as a clickable hyperlink. If `displaylink` is set to `false`, the tag name will be rendered as plain text instead.

  For more information see [MDL-75075](https://tracker.moodle.org/browse/MDL-75075)

### mod_assign

#### Fixed

- The unit test for the privacy provider has been marked as final.

  A number of core tests had been incorrectly configured to extend this test
  but should instead be extending `\mod_assign\tests\provider_testcase`.

  Any community plugins extending the `\mod_assign\privacy\provider_test` test
  class should be updated to extend `\mod_assign\tests\provider_testcase` instead.

  For more information see [MDL-81520](https://tracker.moodle.org/browse/MDL-81520)

### mod_quiz

#### Changed

- The `quiz_question_tostring` method now includes a new boolean parameter, `displaytaglink`. This parameter specifies whether the tag name in the question bank should be displayed as a clickable hyperlink (`true`) or as plain text (`false`).

  For more information see [MDL-75075](https://tracker.moodle.org/browse/MDL-75075)

### tool_behat

#### Added

- New Behat step `\behat_general::the_url_should_match()` has been added to allow checking the current URL. You can use it to check whether a user has been redirected to the expected location.
  e.g. `And the url should match "/mod/forum/view\.php\?id=[0-9]+"`

  For more information see [MDL-83617](https://tracker.moodle.org/browse/MDL-83617)

## 4.5.1

### core

#### Added

- `\core\output\activity_header` now uses the `is_title_allowed()` method when setting the title in the constructor.

  This method has been improved to give priority to the 'notitle' option in the theme config for the current page layout, over the top-level option in the theme.

  For example, the Boost theme sets `$THEME->activityheaderconfig['notitle'] = true;` by default, but in its `secure` pagelayout, it has `'notitle' = false`.
  This prevents display of the title in all layouts except `secure`.

  For more information see [MDL-75610](https://tracker.moodle.org/browse/MDL-75610)

#### Changed

- All uses of the following PHPUnit methods have been removed as these methods are
  deprecated upstream without direct replacement:

  - `withConsecutive`
  - `willReturnConsecutive`
  - `onConsecutive`

  Any plugin using these methods must update their uses.

  For more information see [MDL-81308](https://tracker.moodle.org/browse/MDL-81308)

### core_courseformat

#### Added

- Add core_courseformat\base::invalidate_all_session_caches to reset course editor cache for all users when course is changed. This method can be used as an alternative to core_courseformat\base::session_cache_reset for resetting the cache for the current user  in case the change in the course should be reflected for all users.

  For more information see [MDL-83185](https://tracker.moodle.org/browse/MDL-83185)

### core_enrol

#### Changed

- The `after_user_enrolled` hook now contains a `roleid` property to allow for listeners to determine which role was assigned during user enrolment (if any)

  The base enrolment `enrol_plugin::send_course_welcome_message_to_user` method also now accepts a `$roleid` parameter in order to correctly populate the `courserole` placeholder

  For more information see [MDL-83432](https://tracker.moodle.org/browse/MDL-83432)

### core_form

#### Changed

- The `cohort` form element now accepts new `includes` option, which is passed to the corresponding external service to determine which cohorts to return (self, parents, all)

  For more information see [MDL-83641](https://tracker.moodle.org/browse/MDL-83641)

### core_reportbuilder

#### Changed

- The `get_active_conditions` method of the base report class has a new `$checkavailable` parameter to determine whether to check the returned conditions availability

  For more information see [MDL-82809](https://tracker.moodle.org/browse/MDL-82809)

### mod_quiz

#### Changed

- The `\mod_quiz\attempt_walkthrough_from_csv_test` unit test has been marked as final and should not be extended by other tests.

  All shared functionality has been moved to a new autoloadable test-case:
  `\mod_quiz\tests\attempt_walkthrough_testcase`.

  To support this testcase the existing `$files` instance property should be replaced with a new static method, `::get_test_files`.
  Both the existing instance property and the new static method can co-exist.

  For more information see [MDL-81521](https://tracker.moodle.org/browse/MDL-81521)

## 4.5

### core

#### Added

- A new method, `\core_user::get_name_placeholders()`, has been added to return an array of user name fields.

  For more information see [MDL-64148](https://tracker.moodle.org/browse/MDL-64148)
- The following classes have been renamed and now support autoloading.
  Existing classes are currently unaffected.

  | Old class name     | New class name     |
  | ---                | ---                |
  | `\core_component`  | `\core\component`  |

  For more information see [MDL-66903](https://tracker.moodle.org/browse/MDL-66903)
- Added the ability for unit tests to autoload classes in the `\[component]\tests\`
  namespace from the `[path/to/component]/tests/classes` directory.

  For more information see [MDL-66903](https://tracker.moodle.org/browse/MDL-66903)
- Added a helper to load fixtures from a components `tests/fixtures/` folder:

  ```php
  advanced_testcase::load_fixture(string $component, string $fixture): void;
  ```

  For more information see [MDL-66903](https://tracker.moodle.org/browse/MDL-66903)
- Redis session cache has been improved to make a single call where two were used before.

  For more information see [MDL-69684](https://tracker.moodle.org/browse/MDL-69684)
- Added stored progress bars

  For more information see [MDL-70854](https://tracker.moodle.org/browse/MDL-70854)
- Two new functions have been introduced in the `\moodle_database` class:
  - `\moodle_database::get_counted_records_sql()`
  - `\moodle_database::get_counted_recordset_sql()`

  These methods are compatible with all databases.

  They will check the current running database engine and apply the `COUNT` window function if it is supported,
  otherwise, they will use the usual `COUNT` function.

  The `COUNT` window function optimization is applied to the following databases:
  - PostgreSQL
  - MariaDB
  - Oracle

  Note: MySQL and SQL Server do not use this optimization due to insignificant performance differences before and
  after the improvement.

  For more information see [MDL-78030](https://tracker.moodle.org/browse/MDL-78030)
- The `after_config()` callback has been converted to a hook, `\core\hook\after_config`.

  For more information see [MDL-79011](https://tracker.moodle.org/browse/MDL-79011)
- The `\core\output\select_menu` widget now supports rendering dividers between menu options. Empty elements (`null` or empty strings) within the array of options are considered and rendered as dividers in the dropdown menu.

  For more information see [MDL-80747](https://tracker.moodle.org/browse/MDL-80747)
- The `\core\output\select_menu` widget now supports a new feature: inline labels. You can render the label inside the combobox widget by passing `true` to the `$inlinelabel` parameter when calling the `->set_label()` method.

  For more information see [MDL-80747](https://tracker.moodle.org/browse/MDL-80747)
- A new hook called `\core\hook\output\after_http_headers` has been created. This hook allow plugins to modify the content after headers are sent.

  For more information see [MDL-80890](https://tracker.moodle.org/browse/MDL-80890)
- The following classes have been renamed.
  Existing classes are currently unaffected.

  | Old class name  | New class name  |
  | ---             | ---             |
  | `\core_user`    | `\core\user`    |

  For more information see [MDL-81031](https://tracker.moodle.org/browse/MDL-81031)
- New DML constant `SQL_INT_MAX` to define the size of a large integer with cross database platform support.

  For more information see [MDL-81282](https://tracker.moodle.org/browse/MDL-81282)
- Added a new `exception` L2 Namespace to APIs.

  For more information see [MDL-81903](https://tracker.moodle.org/browse/MDL-81903)
- Added a mechanism to support autoloading of legacy class files.
  This will help to reduce the number of `require_once` calls in the codebase, and move away from the use of monolithic libraries.

  For more information see [MDL-81919](https://tracker.moodle.org/browse/MDL-81919)
- The following exceptions are now also available in the `\core\exception` namespace:

    - `\coding_exception`
    - `\file_serving_exception`
    - `\invalid_dataroot_permissions`
    - `\invalid_parameter_exception`
    - `\invalid_response_exception`
    - `\invalid_state_exception`
    - `\moodle_exception`
    - `\require_login_exception`
    - `\require_login_session_timeout_exception`
    - `\required_capability_exception`
    - `\webservice_parameter_exception`

  For more information see [MDL-81919](https://tracker.moodle.org/browse/MDL-81919)
- The following classes are now also available in the `\core\` namespace and support autoloading:

  | Old class name       | New class name            |
  | ---                  | ---                       |
  | `\emoticon_manager`  | `\core\emoticon_manager`  |
  | `\lang_string`       | `\core\lang_string`       |

  For more information see [MDL-81920](https://tracker.moodle.org/browse/MDL-81920)
- The following classes have been renamed and now support autoloading.
  Existing classes are currently unaffected.

  | Old class name               | New class name                                          |
  | ---                          | ---                                                     |
  | `\moodle_url`                | `\core\url`                                             |
  | `\progress_trace`            | `\core\output\progress_trace`                           |
  | `\combined_progress_trace`   | `\core\output\progress_trace\combined_progress_trace`   |
  | `\error_log_progress_trace`  | `\core\output\progress_trace\error_log_progress_trace`  |
  | `\html_list_progress_trace`  | `\core\output\progress_trace\html_list_progress_trace`  |
  | `\html_progress_trace`       | `\core\output\progress_trace\html_progress_trace`       |
  | `\null_progress_trace`       | `\core\output\progress_trace\null_progress_trace`       |
  | `\progress_trace_buffer`     | `\core\output\progress_trace\progress_trace_buffer`     |
  | `\text_progress_trace`       | `\core\output\progress_trace\text_progress_trace`       |

  For more information see [MDL-81960](https://tracker.moodle.org/browse/MDL-81960)
- The following classes are now also available in the following new
  locations. They will continue to work in their old locations:

  | Old classname                              | New classname                                                      |
  | ---                                        | ---                                                                |
  | `\action_link`                             | `\core\output\action_link`                                         |
  | `\action_menu_filler`                      | `\core\output\action_menu\filler`                                  |
  | `\action_menu_link_primary`                | `\core\output\action_menu\link_primary`                            |
  | `\action_menu_link_secondary`              | `\core\output\action_menu\link_secondary`                          |
  | `\action_menu_link`                        | `\core\output\action_menu\link`                                    |
  | `\action_menu`                             | `\core\output\action_menu`                                         |
  | `\block_contents`                          | `\core_block\output\block_contents`                                |
  | `\block_move_target`                       | `\core_block\output\block_move_target`                             |
  | `\component_action`                        | `\core\output\actions\component_action`                            |
  | `\confirm_action`                          | `\core\output\actions\confirm_action`                              |
  | `\context_header`                          | `\core\output\context_header`                                      |
  | `\core\output\local\action_menu\subpanel`  | `\core\output\action_menu\subpanel`                                |
  | `\core_renderer_ajax`                      | `\core\output\core_renderer_ajax`                                  |
  | `\core_renderer_cli`                       | `\core\output\core_renderer_cli`                                   |
  | `\core_renderer_maintenance`               | `\core\output\core_renderer_maintenance`                           |
  | `\core_renderer`                           | `\core\output\core_renderer`                                       |
  | `\custom_menu_item`                        | `\core\output\custom_menu_item`                                    |
  | `\custom_menu`                             | `\core\output\custom_menu`                                         |
  | `\file_picker`                             | `\core\output\file_picker`                                         |
  | `\flexible_table`                          | `\core_table\flexible_table`                                       |
  | `\fragment_requirements_manager`           | `\core\output\requirements\fragment_requirements_manager`          |
  | `\help_icon`                               | `\core\output\help_icon`                                           |
  | `\html_table_cell`                         | `\core_table\output\html_table_cell`                               |
  | `\html_table_row`                          | `\core_table\output\html_table_row`                                |
  | `\html_table`                              | `\core_table\output\html_table`                                    |
  | `\html_writer`                             | `\core\output\html_writer`                                         |
  | `\image_icon`                              | `\core\output\image_icon`                                          |
  | `\initials_bar`                            | `\core\output\initials_bar`                                        |
  | `\js_writer`                               | `\core\output\js_writer`                                           |
  | `\page_requirements_manager`               | `\core\output\requirements\page_requirements_manager`              |
  | `\paging_bar`                              | `\core\output\paging_bar`                                          |
  | `\pix_emoticon`                            | `\core\output\pix_emoticon`                                        |
  | `\pix_icon_font`                           | `\core\output\pix_icon_font`                                       |
  | `\pix_icon_fontawesome`                    | `\core\output\pix_icon_fontawesome`                                |
  | `\pix_icon`                                | `\core\output\pix_icon`                                            |
  | `\plugin_renderer_base`                    | `\core\output\plugin_renderer_base`                                |
  | `\popup_action`                            | `\core\output\actions\popup_action`                                |
  | `\preferences_group`                       | `\core\output\preferences_group`                                   |
  | `\preferences_groups`                      | `\core\output\preferences_groups`                                  |
  | `\progress_bar`                            | `\core\output\progress_bar`                                        |
  | `\renderable`                              | `\core\output\renderable`                                          |
  | `\renderer_base`                           | `\core\output\renderer_base`                                       |
  | `\renderer_factory_base`                   | `\core\output\renderer_factory\renderer_factory_base`              |
  | `\renderer_factory`                        | `\core\output\renderer_factory\renderer_factory_interface`         |
  | `\single_button`                           | `\core\output\single_button`                                       |
  | `\single_select`                           | `\core\output\single_select`                                       |
  | `\standard_renderer_factory`               | `\core\output\renderer_factory\standard_renderer_factory`          |
  | `\table_dataformat_export_format`          | `\core_table\dataformat_export_format`                             |
  | `\table_default_export_format_parent`      | `\core_table\base_export_format`                                   |
  | `\table_sql`                               | `\core_table\sql_table`                                            |
  | `\tabobject`                               | `\core\output\tabobject`                                           |
  | `\tabtree`                                 | `\core\output\tabtree`                                             |
  | `\templatable`                             | `\core\output\templatable`                                         |
  | `\theme_config`                            | `\core\output\theme_config`                                        |
  | `\theme_overridden_renderer_factory`       | `\core\output\renderer_factory\theme_overridden_renderer_factory`  |
  | `\url_select`                              | `\core\output\url_select`                                          |
  | `\user_picture`                            | `\core\output\user_picture`                                        |
  | `\xhtml_container_stack`                   | `\core\output\xhtml_container_stack`                               |
  | `\YUI_config`                              | `\core\output\requirements\yui`                                    |

  For more information see [MDL-82183](https://tracker.moodle.org/browse/MDL-82183)
- A new method, `\core\output\::get_deprecated_icons()`, has been added to the `icon_system` class. All deprecated icons should be registered through this method.
  Plugins can implement a callback to `pluginname_get_deprecated_icons()` to register their deprecated icons too.
  When `$CFG->debugpageinfo` is enabled, a console message will display a list of the deprecated icons.

  For more information see [MDL-82212](https://tracker.moodle.org/browse/MDL-82212)
- Two new optional parameters have been added to the `\core\output\notification` constructor:
  - `null|string $title` - `null|string $icon`

  For more information see [MDL-82297](https://tracker.moodle.org/browse/MDL-82297)
- A new method, `\url_select::set_disabled_option()`, has been added to enable or disable an option from its url (the key for the option).

  For more information see [MDL-82490](https://tracker.moodle.org/browse/MDL-82490)
- A new static method, `\advanced_testcase::get_fixture_path()`, has been added to enable unit tests to fetch the path to a fixture.

  For more information see [MDL-82627](https://tracker.moodle.org/browse/MDL-82627)
- A new static method, `\advanced_testcase::get_mocked_http_client()`, has been added to allow unit tests to mock the `\core\http_client` and update the DI container.

  For more information see [MDL-82627](https://tracker.moodle.org/browse/MDL-82627)
- The Moodle autoloader should now be registered using `\core\component::register_autoloader` rather than manually doing so in any exceptional location which requires it.
  Note: It is not normally necessary to include the autoloader manually, as it is registered automatically when the Moodle environment is bootstrapped.

  For more information see [MDL-82747](https://tracker.moodle.org/browse/MDL-82747)
- A new JS module for interacting with the Routed REST API has been introduced.
  For more information see the documentation in the `core/fetch` module.

  For more information see [MDL-82778](https://tracker.moodle.org/browse/MDL-82778)
- The `\section_info` class now includes a new method `\section_info::get_sequence_cm_infos()` that retrieves all `\cm_info` instances associated with the course section.

  For more information see [MDL-82845](https://tracker.moodle.org/browse/MDL-82845)
- When rendering a renderable located within a namespace, the namespace
  will now be included in the renderer method name with double-underscores
  separating the namespace parts.

  Note: Only those renderables within an `output` namespace will be
  considered, for example `\core\output\action_menu\link` and only the
  parts of the namespace after `output` will be included.

  The following are examples of the new behaviour:

  | Renderable name                          | Renderer method name                |
  | ---                                      | ---                                 |
  | `\core\output\action_menu\link`          | `render_action_menu__link`          |
  | `\core\output\action_menu\link_primary`  | `render_action_menu__link_primary`  |
  | `\core\output\action\menu\link`          | `render_action__menu__link`         |
  | `\core\output\user_menu\link`            | `render_user_menu__link`            |

  For more information see [MDL-83164](https://tracker.moodle.org/browse/MDL-83164)

#### Changed

- The minimum Redis server version is now 2.6.12. The minimum PHP Redis extension version is now 2.2.4.

  For more information see [MDL-69684](https://tracker.moodle.org/browse/MDL-69684)
- The class autoloader has been moved to an earlier point in the Moodle bootstrap.

  Autoloaded classes are now available to scripts using the `ABORT_AFTER_CONFIG` constant.

  For more information see [MDL-80275](https://tracker.moodle.org/browse/MDL-80275)
- The `\core\dataformat::get_format_instance()` method is now public, and can be used to retrieve a writer instance for a given dataformat.

  For more information see [MDL-81781](https://tracker.moodle.org/browse/MDL-81781)
- The `\get_home_page()` function can now return new constant `HOMEPAGE_URL`, applicable when a third-party hook has extended the default homepage options for the site.

  A new function, `\get_default_home_page_url()` has been added which will return the correct URL when this constant is returned.

  For more information see [MDL-82066](https://tracker.moodle.org/browse/MDL-82066)

#### Deprecated

- The following method has been deprecated and should no longer be used: `reset_password_and_mail`. Please consider using `setnew_password_and_mail` as a replacement.

  For more information see [MDL-64148](https://tracker.moodle.org/browse/MDL-64148)
- - The following methods have been finally deprecated and removed:
    - `\plagiarism_plugin::get_configs()`
    - `\plagiarism_plugin::get_file_results()`
    - `\plagiarism_plugin::update_status()`, please use `{plugin name}_before_standard_top_of_body_html` instead.
  - Final deprecation and removal of `\plagiarism_get_file_results()`. Please use `\plagiarism_get_links()` instead.
  - Final deprecation and removal of `\plagiarism_update_status()`. Please use `\{plugin name}_before_standard_top_of_body_html()` instead.

  For more information see [MDL-71326](https://tracker.moodle.org/browse/MDL-71326)
- `\moodle_list` and `\list_item` were only used by `qbank_managecategories`, and these usages have been removed, so these classes, and the `lib/listlib.php` file have now been deprecated. This method was the only usage of the `QUESTION_PAGE_LENGTH` constant, which was defined in `question_category_object.php`, and so is also now deprecated.

  For more information see [MDL-72397](https://tracker.moodle.org/browse/MDL-72397)
- The `$timeout` property of the `\navigation_cache` class has been deprecated.

  For more information see [MDL-79628](https://tracker.moodle.org/browse/MDL-79628)
- The following classes are deprecated as they are handled by core_sms API and smsgateway_aws plugin:
  - `\core\aws\admin_settings_aws_region`
  - `\core\aws\aws_helper`
  - `\core\aws\client_factory`

  For more information see [MDL-80962](https://tracker.moodle.org/browse/MDL-80962)
- The following methods have been deprecated, existing usage should switch to use the secure `\core\encryption::encrypt()` and `\core\encryption::decrypt()` static methods:

  - `\rc4encrypt()`
  - `\rc4decrypt()`
  - `\endecrypt()`

  For more information see [MDL-81940](https://tracker.moodle.org/browse/MDL-81940)
- The following method has been deprecated and should not be used any longer: `\print_grade_menu()`.

  For more information see [MDL-82157](https://tracker.moodle.org/browse/MDL-82157)
- The following files and their contents have been deprecated:

  - `lib/soaplib.php`
  - `lib/tokeniserlib.php`

  For more information see [MDL-82191](https://tracker.moodle.org/browse/MDL-82191)
- The following functions have been initially deprecated:

  - `\get_core_subsystems()`
  - `\get_plugin_types()`
  - `\get_plugin_list()`
  - `\get_plugin_list_with_class()`
  - `\get_plugin_directory()`
  - `\normalize_component()`
  - `\get_component_directory()`
  - `\get_context_instance()`

  Note: These methods have been deprecated for a long time, but previously did not emit any deprecation notice.

  For more information see [MDL-82287](https://tracker.moodle.org/browse/MDL-82287)
- The following methods have been finally deprecated and will now throw an exception if called:

  - `\get_context_instance()`
  - `\can_use_rotated_text()`
  - `\get_system_context()`
  - `\print_arrow()`

  For more information see [MDL-82287](https://tracker.moodle.org/browse/MDL-82287)
- The `global_navigation::load_section_activities` method is now deprecated and replaced by `global_navigation::load_section_activities_navigation`.

  For more information see [MDL-82845](https://tracker.moodle.org/browse/MDL-82845)
- The following renderer methods have been deprecated from the core
  renderer:

  | method                               | replacement                           |
  | ---                                  | ---                                   |
  | `render_action_menu_link`            | `render_action_menu__link`            |
  | `render_action_menu_link_primary`    | `render_action_menu__link_primary`    |
  | `render_action_menu_link_secondary`  | `render_action_menu__link_secondary`  |
  | `render_action_menu_filler`          | `render_action_menu__filler`          |

  For more information see [MDL-83164](https://tracker.moodle.org/browse/MDL-83164)

#### Removed

- The previously deprecated function `search_generate_text_SQL` has been removed and can no longer be used.

  For more information see [MDL-48940](https://tracker.moodle.org/browse/MDL-48940)
- The previously deprecated function `\core_text::reset_caches()` has been removed and can no longer be used.

  For more information see [MDL-71748](https://tracker.moodle.org/browse/MDL-71748)
- The following previously deprecated methods have been removed and can no longer be used:
    - `\renderer_base::should_display_main_logo()`

  For more information see [MDL-73165](https://tracker.moodle.org/browse/MDL-73165)
- Final deprecation of `\print_error()`. Please use the `\moodle_exception` class instead.

  For more information see [MDL-74484](https://tracker.moodle.org/browse/MDL-74484)
- Final deprecation of `\core\task\manager::ensure_adhoc_task_qos()`.

  For more information see [MDL-74843](https://tracker.moodle.org/browse/MDL-74843)
- Support for the deprecated block and activity namespaces `<component>\local\views\secondary`, which supported the overriding of secondary navigation, has now been entirely removed.

  For more information see [MDL-74939](https://tracker.moodle.org/browse/MDL-74939)
- Remove deprecation layer for YUI JS Events. The deprecation layer was introduced with MDL-70990 and MDL-72291.

  For more information see [MDL-77167](https://tracker.moodle.org/browse/MDL-77167)

#### Fixed

- The `\navigation_cache` class now uses the Moodle Universal Cache (MUC) to store the navigation cache data instead of storing it in the global `$SESSION` variable.

  For more information see [MDL-79628](https://tracker.moodle.org/browse/MDL-79628)
- All the `setUp()` and `tearDown()` methods of `PHPUnit` now are required to, always, call to their parent counterparts. This is a good practice to avoid future problems, especially when updating to PHPUnit >= 10.
  This includes the following methods:
    - `setUp()`
    - `tearDown()`
    - `setUpBeforeClass()`
    - `tearDownAfterClass()`

  For more information see [MDL-81523](https://tracker.moodle.org/browse/MDL-81523)
- Use server timezone when constructing `\DateTimeImmutable` for the system `\core\clock` implementation.

  For more information see [MDL-81894](https://tracker.moodle.org/browse/MDL-81894)

### core_availability

#### Removed

- The previously deprecated renderer `render_core_availability_multiple_messages` method has been removed.

  For more information see [MDL-82223](https://tracker.moodle.org/browse/MDL-82223)

### core_backup

#### Removed

- The `\core_backup\copy\copy` class has been deprecated and removed. Please use `\copy_helper` instead.

  For more information see [MDL-75022](https://tracker.moodle.org/browse/MDL-75022)
- The following methods in the `\base_controller` class have been removed:

  | Method                          | Replacement                                                     |
  | ---                             | ---                                                             |
  | `\base_controller::set_copy()`  | Use a restore controller for storing copy information instead.  |
  | `\base_controller::get_copy()`  | `\restore_controller::get_copy()`                               |

  For more information see [MDL-75025](https://tracker.moodle.org/browse/MDL-75025)

### core_badges

#### Added

- The following new webservices have been added:

   - `core_badges_enable_badges`

   - `core_badges_disable_badges`

  For more information see [MDL-82168](https://tracker.moodle.org/browse/MDL-82168)

#### Changed

- New fields have been added to the return structure of the `core_badges_get_user_badge_by_hash` and `core_badges_get_user_badges` external functions:
    - `recipientid`: The ID of the user who received the badge.
    - `recipientfullname`: The full name of the user who received the badge.

  For more information see [MDL-82742](https://tracker.moodle.org/browse/MDL-82742)

#### Deprecated

- The `badges/newbadge.php` page has been deprecated and merged with `badges/edit.php`. Please, use `badges/edit.php` instead.

  For more information see [MDL-43938](https://tracker.moodle.org/browse/MDL-43938)
- The `OPEN_BADGES_V1` constant is deprecated and should not be used anymore.

  For more information see [MDL-70983](https://tracker.moodle.org/browse/MDL-70983)
- The `course_badges` systemreport has been deprecated and merged with the badges systemreport. Please, use the badges systemreport instead.

  For more information see [MDL-82503](https://tracker.moodle.org/browse/MDL-82503)
- The `$showmanage` parameter to the `\core_badges\output\standard_action_bar` constructor has been deprecated and should not be used anymore.

  For more information see [MDL-82503](https://tracker.moodle.org/browse/MDL-82503)
- The `badges/view.php` page has been deprecated and merged with `badges/index.php`. Please, use `badges/index.php` instead.

  For more information see [MDL-82503](https://tracker.moodle.org/browse/MDL-82503)

#### Removed

- Final removal of `BADGE_BACKPACKAPIURL` and `BADGE_BACKPACKWEBURL` constants.

  For more information see [MDL-70983](https://tracker.moodle.org/browse/MDL-70983)

### core_cache

#### Added

- The following classes have been renamed and now support autoloading.

  Existing classes are currently unaffected.

  | Old class name                     | New class name                                     |
  | ---                                | ---                                                |
  | `\cache_definition`                | `\core_cache\definition`                           |
  | `\cache_request`                   | `\core_cache\request_cache`                        |
  | `\cache_session`                   | `\core_cache\session_cache`                        |
  | `\cache_cached_object`             | `\core_cache\cached_object`                        |
  | `\cache_config`                    | `\core_cache\config`                               |
  | `\cache_config_writer`             | `\core_cache\config_writer`                        |
  | `\cache_config_disabled`           | `\core_cache\disabled_config`                      |
  | `\cache_disabled`                  | `\core_cache\disabled_cache`                       |
  | `\config_writer`                   | `\core_cache\config_writer`                        |
  | `\cache_data_source`               | `\core_cache\data_source_interface`                |
  | `\cache_data_source_versionable`   | `\core_cache\versionable_data_source_interface`    |
  | `\cache_exception`                 | `\core_cache\exception/cache_exception`            |
  | `\cache_factory`                   | `\core_cache\factory`                              |
  | `\cache_factory_disabled`          | `\core_cache\disabled_factory`                     |
  | `\cache_helper`                    | `\core_cache\helper`                               |
  | `\cache_is_key_aware`              | `\core_cache\key_aware_cache_interface`            |
  | `\cache_is_lockable`               | `\core_cache\lockable_cache_interface`             |
  | `\cache_is_searchable`             | `\core_cache\searchable_cache_interface`           |
  | `\cache_is_configurable`           | `\core_cache\configurable_cache_interface`         |
  | `\cache_loader`                    | `\core_cache\loader_interface`                     |
  | `\cache_loader_with_locking`       | `\core_cache\loader_with_locking_interface`        |
  | `\cache_lock_interface`            | `\core_cache\cache_lock_interface`                 |
  | `\cache_store`                     | `\core_cache\store`                                |
  | `\cache_store_interface`           | `\core_cache\store_interface`                      |
  | `\cache_ttl_wrapper`               | `\core_cache\ttl_wrapper`                          |
  | `\cacheable_object`                | `\core_cache\cacheable_object_interface`           |
  | `\cacheable_object_array`          | `\core_cache\cacheable_object_array`               |
  | `\cache_definition_mappings_form`  | `\core_cache\form/cache_definition_mappings_form`  |
  | `\cache_definition_sharing_form`   | `\core_cache\form/cache_definition_sharing_form`   |
  | `\cache_lock_form`                 | `\core_cache\form/cache_lock_form`                 |
  | `\cache_mode_mappings_form`        | `\core_cache\form/cache_mode_mappings_form`        |

  For more information see [MDL-82158](https://tracker.moodle.org/browse/MDL-82158)

### core_communication

#### Changed

- The `\core_communication\helper::get_enrolled_users_for_course()` method now accepts an additional argument that can filter only active enrolments.

  For more information see [MDL-81951](https://tracker.moodle.org/browse/MDL-81951)

### core_completion

#### Added

- A new `FEATURE_COMPLETION` plugin support constant has been added. In the future, this constant will be used to indicate when a plugin does not allow completion and it is enabled by default.

  For more information see [MDL-83008](https://tracker.moodle.org/browse/MDL-83008)

#### Changed

- The `\core_completion\activity_custom_completion::get_overall_completion_state()` method can now also return `COMPLETION_COMPLETE_FAIL` and not only `COMPLETION_COMPLETE` and `COMPLETION_INCOMPLETE`.

  For more information see [MDL-81749](https://tracker.moodle.org/browse/MDL-81749)

### core_course

#### Added

- - New optional `sectionNum` parameter has been added to `activitychooser` AMD module initializer.
  - New option `sectionnum` parameter has been added to `get_course_content_items()` external function.
  - New optional `sectionnum` parameter has been added to `get_content_items_for_user_in_course()` function.

  For more information see [MDL-81675](https://tracker.moodle.org/browse/MDL-81675)
- The `core_course_get_courses_by_field` web service now accepts a new parameter `sectionid` to be able to retrieve the course that has the indicated section.

  For more information see [MDL-81699](https://tracker.moodle.org/browse/MDL-81699)
- Added new `activitychooserbutton` output class to display the activitychooser button. New `action_links` can be added to the button via hooks converting it into a dropdown.

  For more information see [MDL-81767](https://tracker.moodle.org/browse/MDL-81767)
- New `\core_course\hook\before_activitychooserbutton_exported` hook added to allow third-party plugins to extend activity chooser button options.

  For more information see [MDL-81767](https://tracker.moodle.org/browse/MDL-81767)
- The following methods have been updated to accept a section name in addition to the section number:
  - `\behat_course::i_open_section_edit_menu()`
  - `\behat_course::i_show_section()`
  - `\behat_course::i_hide_section(),`
  - `\behat_course::i_wait_until_section_is_available()`
  - `\behat_course::show_section_link_exists()`
  - `\behat_course::hide_section_link_exists()`
  - `\behat_course::section_exists()`

  For more information see [MDL-82259](https://tracker.moodle.org/browse/MDL-82259)

#### Changed

- The reset course page has been improved. The words "Delete" and "Remove" have been removed from all the options to make it easier to focus on the data to be removed and avoid inconsistencies and duplicated information. Third party plugins implementing reset methods might need to:
  - Add static element in the _reset_course_form_definition method before all the options with the Delete string:
      `$mform->addElement('static', 'assigndelete', get_string('delete'));`
  - Review all the strings used in the reset page to remove the "Delete" or "Remove" words from them.

  For more information see [MDL-81872](https://tracker.moodle.org/browse/MDL-81872)
- The external function `core_course_get_contents` now returns the `component` and `itemid` of sections.

  For more information see [MDL-82385](https://tracker.moodle.org/browse/MDL-82385)

#### Deprecated

- The `data-sectionid` attribute in the activity chooser has been deprecated. Please update your code to use `data-sectionnum` instead.

  For more information see [MDL-81676](https://tracker.moodle.org/browse/MDL-81676)
- The `$course` parameter in the constructor of the `\core_course\output\actionbar\group_selector` class has been deprecated and is no longer used.

  For more information see [MDL-82393](https://tracker.moodle.org/browse/MDL-82393)

#### Removed

- The previously deprecated `\print_course_request_buttons()` method has been removed and can no longer be used.

  For more information see [MDL-73976](https://tracker.moodle.org/browse/MDL-73976)
- The `$course` class property in the `\core_course\output\actionbar\group_selector` class has been removed.

  For more information see [MDL-82393](https://tracker.moodle.org/browse/MDL-82393)

### core_courseformat

#### Added

- The constructor of `\core_courseformat\output\local\state\cm` has been updated to accept a new optional parameter, `$istrackeduser`.
  If `istrackeduser` is pre-computed for the course module's course, it can be provided here to avoid an additional function call.

  For more information see [MDL-81610](https://tracker.moodle.org/browse/MDL-81610)
- Added new `core_courseformat_create_module` webservice to create new module (with quickcreate feature) instances in the course.

  For more information see [MDL-81767](https://tracker.moodle.org/browse/MDL-81767)
- A new `$disabled` parameter has been added to the following `html_writer` methods:

  - `\core\output\html_writer::select()`
  - `\core\output\html_writer::select_optgroup()`
  - `\core\output\html_writer::select_option()`

  For more information see [MDL-82146](https://tracker.moodle.org/browse/MDL-82146)
- A new class, `\core_courseformat\output\local\content\basecontrolmenu`, has been created.
  The following existing classes extend the new class:

   - `\core_courseformat\output\local\content\cm\controlmenu`
   - `\core_courseformat\output\local\content\section\controlmenu`

  For more information see [MDL-82510](https://tracker.moodle.org/browse/MDL-82510)
- Course sections now use an action menu to display possible actions that a user may take in each section. This action menu is rendered using the `\core_courseformat\output\local\content\cm\delegatedcontrolmenu` renderable class.

  For more information see [MDL-82510](https://tracker.moodle.org/browse/MDL-82510)

### core_customfield

#### Changed

- The field controller `\core_customfield\field_controller::get_formatted_name()` method now accepts an optional `$escape` parameter to define whether to escape the returned name.

  For more information see [MDL-82488](https://tracker.moodle.org/browse/MDL-82488)

### core_external

#### Changed

- The external function `core_webservice_external::get_site_info` now returns the default home page URL when needed.

  For more information see [MDL-82844](https://tracker.moodle.org/browse/MDL-82844)

### core_files

#### Added

- A new hook, `\core_files\hook\after_file_created`, has been created to allow the inspection of files after they have been saved in the filesystem.

  For more information see [MDL-75850](https://tracker.moodle.org/browse/MDL-75850)
- A new hook, `\core_files\hook\before_file_created`, has been created to allow modification of a file immediately before it is stored in the file system.

  For more information see [MDL-83245](https://tracker.moodle.org/browse/MDL-83245)

### core_filters

#### Added

- Added support for autoloading of filters from `\filter_[filtername]\filter`. Existing classes should be renamed to use the new namespace.

  For more information see [MDL-82427](https://tracker.moodle.org/browse/MDL-82427)

#### Deprecated

- The `\core_filters\filter_manager::text_filtering_hash` method has been finally deprecated and removed.

  For more information see [MDL-82427](https://tracker.moodle.org/browse/MDL-82427)

### core_form

#### Added

- The `duration` form field type has been modified to validate that the supplied value is a positive value.
  Previously it could be any numeric value, but every usage of this field in Moodle was expecting a positive value. When a negative value was provided and accepted, subtle bugs could occur.
  Where a negative duration _is_ allowed, the `allownegative` attribute can be set to `true`.

  For more information see [MDL-82687](https://tracker.moodle.org/browse/MDL-82687)

### core_grades

#### Changed

- The grade `itemname` property contained in the return structure of the following external methods is now PARAM_RAW:
    - `core_grades_get_gradeitems`
    - `gradereport_user_get_grade_items`

  For more information see [MDL-80017](https://tracker.moodle.org/browse/MDL-80017)

#### Deprecated

- The behat step definition `\behat_grade::i_confirm_in_search_within_the_gradebook_widget_exists()` has been deprecated. Please use `\behat_general::i_confirm_in_search_combobox_exists()` instead.

  For more information see [MDL-80744](https://tracker.moodle.org/browse/MDL-80744)
- The behat step definition `\behat_grade::i_confirm_in_search_within_the_gradebook_widget_does_not_exist()` has been deprecated. Please use `\behat_general::i_confirm_in_search_combobox_does_not_exist()` instead.

  For more information see [MDL-80744](https://tracker.moodle.org/browse/MDL-80744)
- The behat step definition `\behat_grade::i_click_on_in_search_widget()` has been deprecated. Please use `\behat_general::i_click_on_in_search_combobox()` instead.

  For more information see [MDL-80744](https://tracker.moodle.org/browse/MDL-80744)
- The `\core_grades_renderer::group_selector()` method has been deprecated. Please use `\core_course\output\actionbar\renderer` to render a `group_selector` renderable instead.

  For more information see [MDL-80745](https://tracker.moodle.org/browse/MDL-80745)

#### Removed

- The following previously deprecated Behat step helper methods have been removed and can no longer be used:
   - `\behat_grade::select_in_gradebook_navigation_selector()`
   - `\behat_grade::select_in_gradebook_tabs()`

  For more information see [MDL-74581](https://tracker.moodle.org/browse/MDL-74581)

### core_message

#### Changed

- The `\core_message\helper::togglecontact_link_params()` method now accepts a new optional `$isrequested` parameter to indicate the status of the contact request.

  For more information see [MDL-81428](https://tracker.moodle.org/browse/MDL-81428)

#### Deprecated

- The `core_message/remove_contact_button` template is deprecated and will be removed in a future release.

  For more information see [MDL-81428](https://tracker.moodle.org/browse/MDL-81428)

#### Removed

- Final deprecation of the `MESSAGE_DEFAULT_LOGGEDOFF`, and `MESSAGE_DEFAULT_LOGGEDIN` constants.

  For more information see [MDL-73284](https://tracker.moodle.org/browse/MDL-73284)

### core_question

#### Added

- A new utility function `\question_utils::format_question_fragment()` has been created so that question content can filter based on filters.

  For more information see [MDL-78662](https://tracker.moodle.org/browse/MDL-78662)

#### Changed

- `\core_question\local\bank\column_base::from_column_name()` method now accepts a `bool $ingoremissing` parameter, which can be used to ignore if the class does not exist, instead of throwing an exception.

  For more information see [MDL-81407](https://tracker.moodle.org/browse/MDL-81407)

### core_report

#### Added

- Report has been added to subsystem components list.

  For more information see [MDL-81771](https://tracker.moodle.org/browse/MDL-81771)
- A new general output class, `\core_report\output\coursestructure`, has been created.

  For more information see [MDL-81771](https://tracker.moodle.org/browse/MDL-81771)

#### Changed

- The `\core\report_helper::print_report_selector()` method accepts a new `$additional`` argument for adding content to the tertiary navigation to align with the report selector.

  For more information see [MDL-78773](https://tracker.moodle.org/browse/MDL-78773)

#### Removed

- The previously deprecated `\core\report_helper::save_selected_report()` method has been removed and can no longer be used.

  For more information see [MDL-72353](https://tracker.moodle.org/browse/MDL-72353)

### core_reportbuilder

#### Added

- The return type of the `set_checkbox_toggleall` callback, defined by system reports, can now be null. Use if the checkbox should not be shown for the row.

  For more information see [MDL-52046](https://tracker.moodle.org/browse/MDL-52046)
- System reports now support native entity column aggregation via each columns `set_aggregation()` method

  For more information see [MDL-76392](https://tracker.moodle.org/browse/MDL-76392)
- The following external methods now return tags data relevant to each custom report:
    - `core_reportbuilder_list_reports`
    - `core_reportbuilder_retrieve_report`

  For more information see [MDL-81433](https://tracker.moodle.org/browse/MDL-81433)
- Added a new database helper method `sql_replace_parameters` to help ensure uniqueness of parameters within a SQL expression.

  For more information see [MDL-81434](https://tracker.moodle.org/browse/MDL-81434)
- A new static method, `\core_reportbuilder\local\helpers\format::format_time()`, has been added for use in column callbacks that represent a duration of time (for example "3 days 4 hours").

  For more information see [MDL-82466](https://tracker.moodle.org/browse/MDL-82466)
- The following methods have been moved from `\core_reportbuilder\datasource` class to its parent class `\core_reportbuilder\base` to make them available for use in system reports:

    - `add_columns_from_entity()`
    - `add_filters_from_entity()`
    - `report_element_search()`

  For more information see [MDL-82529](https://tracker.moodle.org/browse/MDL-82529)

#### Changed

- In order to better support float values in filter forms, the following filter types now cast given SQL prior to comparison:

    - `duration`
    - `filesize`
    - `number`

  For more information see [MDL-81168](https://tracker.moodle.org/browse/MDL-81168)
- The base datasource `\core_reportbuilder\datasource::add_all_from_entities()` method accepts a new optional `array $entitynames` parameter to specify which entities to add elements from.

  For more information see [MDL-81330](https://tracker.moodle.org/browse/MDL-81330)
- All time-related code has been updated to the PSR-20 Clock interface, as such the following methods no longer accept a `$timenow` parameter (instead please use `\core\clock` dependency injection):
  - `core_reportbuilder_generator::create_schedule`
  - `core_reportbuilder\local\helpers\schedule::create_schedule()`
  - `core_reportbuilder\local\helpers\schedule::calculate_next_send_time()`

  For more information see [MDL-82041](https://tracker.moodle.org/browse/MDL-82041)
- The following classes have been moved to use the new exception API as a L2 namespace:

  | Old class                                           | New class                                                     |
  | -----------                                         | -----------                                                   |
  | `\core_reportbuilder\report_access_exception`       | `\core_reportbuilder\exception\report_access_exception`       |
  | `\core_reportbuilder\source_invalid_exception`      | `\core_reportbuilder\exception\source_invalid_exception`      |
  | `\core_reportbuilder\source_unavailable_exception`  | `\core_reportbuilder\exception\source_unavailable_exception`  |

  For more information see [MDL-82133](https://tracker.moodle.org/browse/MDL-82133)

#### Removed

- Support for the following entity classes, renamed since 4.1, have now been removed completely:

  - `\core_admin\local\entities\task_log`
  - `\core_cohort\local\entities\cohort`
  - `\core_cohort\local\entities\cohort_member`
  - `\core_course\local\entities\course_category`
  - `\report_configlog\local\entities\config_change`

  For more information see [MDL-74583](https://tracker.moodle.org/browse/MDL-74583)
- The following previously deprecated local helper methods have been removed and can no longer be used:
    - `\core_reportbuilder\local\helpers\audience::get_all_audiences_menu_types()`
    - `\core_reportbuilder\local\helpers\report::get_available_columns()`

  For more information see [MDL-76690](https://tracker.moodle.org/browse/MDL-76690)

### core_role

#### Added

- All session management has been moved to the `\core\session\manager` class.
  This removes the dependancy to use the `sessions` table.

  Session management plugins (like Redis) should now inherit
  the base `\core\session\handler` class, which implements
  `SessionHandlerInterface`, and override methods as required.

  The following methods in `\core\session\manager` have been deprecated:
  | Old method name                  | New method name           |
  | ---                              | ---                       |
  | `kill_all_sessions`              | `destroy_all`             |
  | `kill_session`                   | `destroy`                 |
  | `kill_sessions_for_auth_plugin`  | `destroy_by_auth_plugin`  |
  | `kill_user_sessions`             | `destroy_user_sessions`   |

  For more information see [MDL-66151](https://tracker.moodle.org/browse/MDL-66151)

### core_sms

#### Added

- A new `\core_sms` subsystem has been created.

  For more information see [MDL-81924](https://tracker.moodle.org/browse/MDL-81924)

### core_table

#### Added

- A new `$reponsive` property (defaulting to `true`) has been added to the `\core_table\flexible_table` class.
  This property allows you to control whether the table is rendered as a responsive table.

  For more information see [MDL-80748](https://tracker.moodle.org/browse/MDL-80748)

#### Changed

- The `\core_table\dynamic` class declares a new method `::has_capability()` to allow classes implementing this interface to perform access checks on the dynamic table.
  Note: This is a breaking change. All implementations of the `\core_table\dynamic` table interface _must_ implement the new `has_capability(): bool` method for continued functionality.

  For more information see [MDL-82567](https://tracker.moodle.org/browse/MDL-82567)

### core_user

#### Added

- New `\core_user\hook\extend_user_menu` hook added to allow third party plugins to extend the user menu navigation.

  For more information see [MDL-71823](https://tracker.moodle.org/browse/MDL-71823)
- A new hook, `\core_user\hook\extend_default_homepage`, has been added to allow third-party plugins to extend the default homepage options for the site.

  For more information see [MDL-82066](https://tracker.moodle.org/browse/MDL-82066)

#### Changed

- The visibility of the following methods have been increased to public:
  - `\core_user\form\private_files::check_access_for_dynamic_submission()`
  - `\core_user\form\private_files::get_options()`

  For more information see [MDL-78293](https://tracker.moodle.org/browse/MDL-78293)
- The user profile field `\profile_field_base::display_name()` method now accepts an optional `$escape` parameter to define whether to escape the returned name.

  For more information see [MDL-82494](https://tracker.moodle.org/browse/MDL-82494)

#### Deprecated

- The `\core_user\table\participants_search::get_total_participants_count()` is no longer used since the total count can be obtained from `\core_user\table\participants_search::get_participants()`.

  For more information see [MDL-78030](https://tracker.moodle.org/browse/MDL-78030)

### availability

#### Changed

- The base class `\core_availability\info::get_groups()` method now accepts a `$userid` parameter to specify which user you want to retrieve course groups (defaults to current user).

  For more information see [MDL-81850](https://tracker.moodle.org/browse/MDL-81850)

### customfield_number

#### Added

- A new hook, `\customfield_number\hook\add_custom_providers`, has been added which allows automatic calculation of number course custom field.

  For more information see [MDL-82715](https://tracker.moodle.org/browse/MDL-82715)
- A new class, `\customfield_number\local\numberproviders\nofactivities`, has been added that allows to automatically calculate number of activities of a given type in a given course.

  For more information see [MDL-82715](https://tracker.moodle.org/browse/MDL-82715)
- Added new webservice `customfield_number_recalculate_value`, has been added to recalculate a value of number course custom field.

  For more information see [MDL-82715](https://tracker.moodle.org/browse/MDL-82715)
- A new task, `\customfield_number\task\cron`, cron task that recalculates automatically calculated number course custom fields.

  For more information see [MDL-82715](https://tracker.moodle.org/browse/MDL-82715)

### customfield_select

#### Changed

- The field controller `get_options` method now returns each option pre-formatted.

  For more information see [MDL-82481](https://tracker.moodle.org/browse/MDL-82481)

### editor_tiny

#### Changed

- The `helplinktext` language string is no longer required by editor plugins, instead the `pluginname` will be used in the help dialogue.

  For more information see [MDL-81572](https://tracker.moodle.org/browse/MDL-81572)

### factor_sms

#### Removed

- The following classes are removed as the SMS feature now takes advantage of `core_sms` API:
  - `\factor_sms\event\sms_sent`
  - `\factor_sms\local\smsgateway\aws_sns`
  - `\factor_sms\local\smsgateway\gateway_interface`

  For more information see [MDL-80962](https://tracker.moodle.org/browse/MDL-80962)

### gradereport_grader

#### Deprecated

- The `gradereport_grader/group` ESM has been deprecated. Please use `core_course/actionbar/group` instead.

  For more information see [MDL-80745](https://tracker.moodle.org/browse/MDL-80745)

### gradereport_singleview

#### Deprecated

- The `gradereport_singleview/group` ESM has been deprecated. Please use `core_course/actionbar/group` instead.

  For more information see [MDL-80745](https://tracker.moodle.org/browse/MDL-80745)

### gradereport_user

#### Deprecated

- The `gradereport_user/group` ESM has been deprecated. Please use `core_course/actionbar/group` instead.

  For more information see [MDL-80745](https://tracker.moodle.org/browse/MDL-80745)

### mod

#### Added

- Added new `FEATURE_QUICKCREATE` for modules that can be quickly created in the course wihout filling a previous form.

  For more information see [MDL-81767](https://tracker.moodle.org/browse/MDL-81767)

### mod_assign

#### Added

- Added 2 new settings:
    - `mod_assign/defaultgradetype`
      - The value of this setting dictates which of the `GRADE_TYPE_X` constants is the default option when creating new instances of the assignment.
      - The default value is `GRADE_TYPE_VALUE` (Point)
    - `mod_assign/defaultgradescale`
      - The value of this setting dictates which of the existing scales is the default option when creating new instances of the assignment.

  For more information see [MDL-54105](https://tracker.moodle.org/browse/MDL-54105)
- A new web service called `mod_assign_remove_submission` has been created to remove the submission for a specific user ID and assignment activity ID.

  For more information see [MDL-74050](https://tracker.moodle.org/browse/MDL-74050)
- A new default value for `attemptreopenmethod` has been set to "Automatically until pass".

  For more information see [MDL-80741](https://tracker.moodle.org/browse/MDL-80741)
- A new method, `\assign_feedback_plugin::get_grading_batch_operation_details()`, has been added to the `assign_feedback_plugin` abstract class. Assignment feedback plugins can now override this method to define bulk action buttons that will appear in the sticky footer on the assignment grading page.

  For more information see [MDL-80750](https://tracker.moodle.org/browse/MDL-80750)

#### Deprecated

- The constant `ASSIGN_ATTEMPT_REOPEN_METHOD_NONE` has been deprecated, and a new default value for `attemptreopenmethod` has been set to "Automatically until pass".

  For more information see [MDL-80741](https://tracker.moodle.org/browse/MDL-80741)
- The `\assign_feedback_plugin::get_grading_batch_operations()` method is now deprecated. Use `assign_feedback_plugin::get_grading_batch_operation_details` instead.

  For more information see [MDL-80750](https://tracker.moodle.org/browse/MDL-80750)
- The `\assign_grading_table::plugingradingbatchoperations` property has been removed. You can use `\assign_feedback_plugin::get_grading_batch_operation_details()` instead.

  For more information see [MDL-80750](https://tracker.moodle.org/browse/MDL-80750)
- The `$submissionpluginenabled` and `$submissioncount` parameters from the constructor of the `\mod_assign\output::grading_actionmenu` class have been deprecated.

  For more information see [MDL-80752](https://tracker.moodle.org/browse/MDL-80752)
- The method `\assign::process_save_grading_options()` has been deprecated as it is no longer used.

  For more information see [MDL-82681](https://tracker.moodle.org/browse/MDL-82681)

#### Removed

- The default option "Never" for the `attemptreopenmethod` setting, which disallowed multiple attempts at the assignment, has been removed. This option was unnecessary because limiting attempts to 1 through the `maxattempts` setting achieves the same behavior.

  For more information see [MDL-80741](https://tracker.moodle.org/browse/MDL-80741)
- The `\mod_assign_grading_options_form` class has been removed since it is no longer used.

  For more information see [MDL-82857](https://tracker.moodle.org/browse/MDL-82857)

### mod_bigbluebuttonbn

#### Added

- Added new `meeting_info` value to show presentation file on BBB activity page

  For more information see [MDL-82520](https://tracker.moodle.org/browse/MDL-82520)
- The `broker::process_meeting_events()` method has been extended to call the `::process_action()` method implemented by plugins.

  For more information see [MDL-82872](https://tracker.moodle.org/browse/MDL-82872)

#### Removed

- Mobile support via plugin has been removed as it is now natively available in the Moodle App.

  For more information see [MDL-82447](https://tracker.moodle.org/browse/MDL-82447)

### mod_data

#### Added

- The `\data_add_record()` method accepts a new `$approved` parameter to set the corresponding state of the new record.

  For more information see [MDL-81274](https://tracker.moodle.org/browse/MDL-81274)

#### Deprecated

- The `\mod_data_renderer::render_fields_footer()` method has been deprecated as it's no longer used.

  For more information see [MDL-81321](https://tracker.moodle.org/browse/MDL-81321)

### mod_feedback

#### Deprecated

- The `\feedback_check_is_switchrole()` function has been deprecated as it didn't work.

  For more information see [MDL-72424](https://tracker.moodle.org/browse/MDL-72424)
- The method `\mod_feedback\output\renderer::create_template_form()` has been deprecated. It is not used anymore.

  For more information see [MDL-81742](https://tracker.moodle.org/browse/MDL-81742)

### mod_quiz

#### Added

- The following methods of the `quiz_overview_report` class now take a new optional `$slots` parameter used to only regrade some slots in each attempt (default all):
  - `\quiz_overview_report::regrade_attempts()`
  - `\quiz_overview_report::regrade_batch_of_attempts()`

  For more information see [MDL-79546](https://tracker.moodle.org/browse/MDL-79546)

### qbank_managecategories

#### Changed

- The `\qbank_managecategories\question_category_object` class has been deprecated.
  Methods previously part of this class have been moved to either

   - `\qbank_managecategories\question_categories`,
    for the parts used within this plugin for display a list of categories; or

  `\core_question\category_manager`,
    for the parts used for generate CRUD operations on question categories, including outside of this plugin.

  This change will allow `\qbank_managecategories\question_category_object` to be deprecated, and avoids other parts of the system wishing to manipulate question categories from having to violate cross-component communication rules.

  For more information see [MDL-72397](https://tracker.moodle.org/browse/MDL-72397)

#### Deprecated

- Category lists are now generated by templates. The following classes have been deprecated:
  - `\qbank_managecategories\question_category_list`
  - `\qbank_managecategories\question_category_list_item`

  For more information see [MDL-72397](https://tracker.moodle.org/browse/MDL-72397)
- The following methods of `\qbank_managecategories\helper`have been deprecated and moved to
  `\core_question\category_manager`:

  | Method                                               | Replacement                                                                  |
  | ---                                                  | ---                                                                          |
  | `question_is_only_child_of_top_category_in_context`  | `\core_question\category_manager::is_only_child_of_top_category_in_context`  |
  | `question_is_top_category`                           | `\core_question\category_manager::is_top_category`                           |
  | `question_can_delete_cat`                            | `\core_question\category_manager::can_delete_cat`                            |

  For more information see [MDL-72397](https://tracker.moodle.org/browse/MDL-72397)
- `\qbank_managecategories\question_category_object` is now completely deprecated. Its methods have either been migrated to `\qbank_managecategories\question_categories`, `\core_question\category_manager`, or are no longer used at all.

  For more information see [MDL-72397](https://tracker.moodle.org/browse/MDL-72397)

### report_eventlist

#### Deprecated

- The following deprecated methods in `report_eventlist_list_generator` have been removed:
  - `\report_eventlist_list_generator::get_core_events_list()`
  - `\report_eventlist_list_generator::get_non_core_event_list()`

  For more information see [MDL-72786](https://tracker.moodle.org/browse/MDL-72786)

### report_log

#### Added

- The `\report_log_renderable::get_activities_list()` method return values now includes an array of disabled elements, in addition to the array of activities.

  For more information see [MDL-82146](https://tracker.moodle.org/browse/MDL-82146)

### repository_onedrive

#### Removed

- The following previously deprecated methods have been removed and can no longer be used:
  - `\repository_onedrive::can_import_skydrive_files()`
  - `\repository_onedrive::import_skydrive_files()`

  For more information see [MDL-72620](https://tracker.moodle.org/browse/MDL-72620)

### theme

#### Added

- Added a new `\renderer_base::get_page` getter method.

  For more information see [MDL-81597](https://tracker.moodle.org/browse/MDL-81597)
- New `core/context_header` mustache template has been added. This template can be overridden by themes to modify the context header.

  For more information see [MDL-81597](https://tracker.moodle.org/browse/MDL-81597)

#### Deprecated

- The method `\core\output\core_renderer::render_context_header` has been deprecated please use `\core\output\core_renderer::render($contextheader)` instead

  For more information see [MDL-82160](https://tracker.moodle.org/browse/MDL-82160)

#### Removed

- Removed all references to `iconhelp`, `icon-pre`, `icon-post`, `iconlarge`, and `iconsort` CSS classes.

  For more information see [MDL-74251](https://tracker.moodle.org/browse/MDL-74251)

### theme_boost

#### Added

- Bridged `theme-color-level` using a new `shift-color` function to prepare for its deprecation in Boostrap 5.

  For more information see [MDL-81816](https://tracker.moodle.org/browse/MDL-81816)
- Upon upgrading Font Awesome from version 4 to 6, the solid family was selected by default.

  Support for the `regular`, and `brands` families of icons has now been added, allowing icons defined with `\core\outut\icon_system::FONTAWESOME` to use them.

  Icons can select the FontAwesome family (`fa-regular`, `fa-brands`, `fa-solid`) by using the relevant class name when display the icon.

  For more information see [MDL-82210](https://tracker.moodle.org/browse/MDL-82210)

#### Changed

- The Bootstrap `.no-gutters` class is no longer used, use `.g-0`  instead.

  For more information see [MDL-81818](https://tracker.moodle.org/browse/MDL-81818)
- The `.page-header-headings` CSS class now has a background colour applied to the maintenance and secure layouts.
  You may need to override this class in your maintenance and secure layouts if both of the following are true:
  - Your theme plugin inherits from `theme_boost` and uses this CSS class
  - Your theme plugin applies a different styling for the page header for the maintenance and secure layouts.

  For more information see [MDL-83047](https://tracker.moodle.org/browse/MDL-83047)

### tool

#### Removed

- The Convert to InnoDB plugin (`tool_innodb`) has been completely removed.

  For more information see [MDL-78776](https://tracker.moodle.org/browse/MDL-78776)

### tool_behat

#### Added

- Behat tests are now checking for deprecated icons. This check can be disabled by using the `--no-icon-deprecations` option in the behat CLI.

  For more information see [MDL-82212](https://tracker.moodle.org/browse/MDL-82212)

### tool_oauth2

#### Added

- The `\core\oautuh2\client::get_additional_login_parameters()` method now supports adding the language code to the authentication request so that the OAuth2 login page matches the language in Moodle.

  For more information see [MDL-67554](https://tracker.moodle.org/browse/MDL-67554)
