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See Release Notes

  • Bug fixes for general core bugs in 4.2.x will end 22 April 2024 (12 months).
  • Bug fixes for security issues in 4.2.x will end 7 October 2024 (18 months).
  • PHP version: minimum PHP 8.0.0 Note: minimum PHP version has increased since Moodle 4.1. PHP 8.1.x is supported too.

Differences Between: [Versions 400 and 402] [Versions 401 and 402]

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Defines 1 class


Class: question_handler  - X-Ref

Question handler for custom fields.

create(int $itemid = 0)   X-Ref
Creates the custom field handler and returns a singleton.
Itemid is always zero as the custom fields are the same
for every question across the system.

param: int $itemid Always zero.
return: \qbank_customfields\customfield\question_handler

reset_caches()   X-Ref
Run reset code after unit tests to reset the singleton usage.


can_configure()   X-Ref
The current user can configure custom fields on this component.

return: bool true if the current can configure custom fields, false otherwise

can_edit(field_controller $field, int $instanceid = 0)   X-Ref
The current user can edit custom fields for the given question.

param: field_controller $field
param: int $instanceid id of the question to test edit permission
return: bool true if the current can edit custom fields, false otherwise

can_view(field_controller $field, int $instanceid)   X-Ref
The current user can view custom fields for the given question.

param: field_controller $field
param: int $instanceid id of the question to test edit permission
return: bool true if the current can edit custom fields, false otherwise

can_view_type(field_controller $field, \context $context)   X-Ref
Determine if the current user can view custom field in their given context.
This determines if the user can see the field at all not just the field for
a particular instance.
Used primarily in showing or not the field in the question bank table.

param: field_controller $field The field trying to be viewed.
param: \context $context The context the field is being displayed in.
return: bool true if the current can edit custom fields, false otherwise.

set_parent_context(\context $context)   X-Ref
Sets parent context for the question.

This may be needed when question is being created, there is no question context but we need to check capabilities

param: \context $context

get_parent_context()   X-Ref
Returns the parent context for the question.

return: \context

get_configuration_context()   X-Ref
Context that should be used for new categories created by this handler.

return: \context the context for configuration

get_configuration_url()   X-Ref
URL for configuration page for the fields for the question custom fields.

return: \moodle_url The URL to configure custom fields for this component

get_instance_context(int $instanceid = 0)   X-Ref
Returns the context for the data associated with the given instanceid.

param: int $instanceid id of the record to get the context for
return: \context the context for the given record

get_field_data(\core_customfield\field_controller $field, int $instanceid)   X-Ref
Given a field and instance id get all the filed data.

param: field_controller $field The field to get the data for.
param: int $instanceid The instance id to get the data for.
return: \core_customfield\data_controller The fetched data.

get_categories_fields_data(int $instanceid)   X-Ref
For a given instance id (question id) get the categories and the
fields with any data. Return an array of categories containing an
array of field names and values that is ready to be passed to a renderer.

param: int $instanceid The instance id to get the data for.
return: array $cfdata The fetched data

display_custom_field_table(object $fielddata)   X-Ref
Get the custom data for the given field
and render HTML ready for display in question table.

param: object $fielddata The field data used for display.
return: string The HTML to display in the table column.

display_custom_categories_fields(array $catfielddata)   X-Ref
Render the custom field category and filed data as HTML ready for display.

param: array $catfielddata Array of categories and field names and values.
return: string The HTML to display.

config_form_definition(\MoodleQuickForm $mform)   X-Ref
Add custom controls to the field configuration form that will be saved.

param: \MoodleQuickForm $mform The form to add the custom fields to.

restore_instance_data_from_backup(\restore_task $task, array $data)   X-Ref
Creates or updates the question custom field data when restoring from a backup.

param: \restore_task $task
param: array $data