Inheritance diagram for qbank_customfields\customfield\question_handler:

Public Member Functions
	can_configure ()
	The current user can configure custom fields on this component.

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

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

	can_view_type (field_controller $field, context $context)
	Determine if the current user can view custom field in their given context.

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

	create_category (string $name=null)
	Creates a new category and inserts it to the database.

	delete_all ()
	Deletes all data and all fields and categories defined in this handler.

	delete_category (category_controller $category)
	Permanently delete category, all fields in it and all associated data.

	delete_field_configuration (field_controller $field)
	Permanently delete a custom field configuration and all associated data.

	delete_instance (int $instanceid)
	Deletes all data related to all fields of an instance.

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

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

	display_custom_fields_data (array $fieldsdata)
	Display visible custom fields.

	export_instance_data (int $instanceid, bool $returnall=false)
	Returns the custom field values for an individual instance ready to be displayed.

	export_instance_data_object (int $instanceid, bool $returnall=false)
	Returns the custom field values for an individual instance ready to be displayed.

	get_area ()
	Get area.

	get_available_field_types ()
	Get field types array.

	get_categories_fields_data (int $instanceid)
	For a given instance id (question id) get the categories and the fields with any data.

	get_categories_with_fields ()
	Returns array of categories, each of them contains a list of fields definitions.

	get_component ()
	Get component.

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

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

	get_description_text_options ()
	Options for processing embedded files in the field description.

	get_editable_fields (int $instanceid)
	Get editable fields.

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

	get_fields ()
	Returns list of fields defined for this instance as an array (not groupped by categories)

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

	get_instance_data (int $instanceid, bool $returnall=false)
	Returns the custom field values for an individual instance.

	get_instance_data_for_backup (int $instanceid)
	Get raw data associated with all fields current user can view or edit.

	get_instances_data (array $instanceids, bool $returnall=false)
	Returns the custom fields values for multiple instances.

	get_itemid ()
	Get itemid.

	instance_form_before_set_data (stdClass $instance)
	Prepares the custom fields data related to the instance to pass to mform->set_data()

	instance_form_definition (\MoodleQuickForm $mform, int $instanceid=0, ?string $headerlangidentifier=null, ?string $headerlangcomponent=null)
	Adds custom fields to instance editing form.

	instance_form_definition_after_data (\MoodleQuickForm $mform, int $instanceid=0)
	Form data definition callback.

	instance_form_save (stdClass $instance, bool $isnewinstance=false)
	Saves the given data for custom fields, must be called after the instance is saved and id is present.

	instance_form_validation (array $data, array $files)
	Validates the given data for custom fields, used in moodleform validation() function.

	move_category (category_controller $category, int $beforeid=0)
	Change sort order of the categories.

	move_field (field_controller $field, int $categoryid, int $beforeid=0)
	Change fields sort order, move field to another category.

	rename_category (category_controller $category, string $name)
	Change name for a field category.

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

	save_field_configuration (field_controller $field, stdClass $data)
	Save the field configuration with the data from the form.

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

	uses_categories ()
	Uses categories.

Static Public Member Functions
static	create (int $itemid=0)
	Creates the custom field handler and returns a singleton.

static	get_handler (string $component, string $area, int $itemid=0)
	Returns an instance of handler by component/area/itemid.

static	reset_caches ()
	Run reset code after unit tests to reset the singleton usage.

Public Attributes
int const	NOTVISIBLE = 0
	Field is not displayed in the question display and question preview.

int const	VISIBLETOALL = 2
	Field is displayed in the question display and question preview, visible to everybody.

int const	VISIBLETOTEACHERS = 1
	Field is displayed in the question display and question preview but only for "teachers".

Protected Member Functions
	can_backup (field_controller $field, int $instanceid)
	Checks if current user can backup a given field.

	clear_configuration_cache ()
	Clears a list of categories with corresponding fields definitions.

	generate_category_name ($suffix=0)
	Generates a name for the new category.

	get_parent_context ()
	Returns the parent context for the question.

	get_visible_fields (int $instanceid)
	Get visible fields.

	validate_category (category_controller $category)
	Validate that the given category belongs to this handler.

	validate_field (field_controller $field)
	Validate that the given field belongs to this handler.

Protected Attributes
category_controller[]	$categories = null

context	$parentcontext

Static Protected Attributes
static question_handler	$singleton

Member Function Documentation

◆ can_backup()

core_customfield\handler::can_backup	(	field_controller	$field,
		int	$instanceid )

protectedinherited

Checks if current user can backup a given field.

Capability to backup the instance does not need to be checked here

Parameters

field_controller	$field
int	$instanceid

Return values

bool

◆ can_configure()

qbank_customfields\customfield\question_handler::can_configure ( )

The current user can configure custom fields on this component.

Return values

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

Reimplemented from core_customfield\handler.

◆ can_edit()

qbank_customfields\customfield\question_handler::can_edit	(	field_controller	$field,
		int	$instanceid = 0 )

The current user can edit custom fields for the given question.

Parameters

field_controller	$field
int	$instanceid	id of the question to test edit permission

Return values

bool	true if the current can edit custom fields, false otherwise

Reimplemented from core_customfield\handler.

◆ can_view()

qbank_customfields\customfield\question_handler::can_view	(	field_controller	$field,
		int	$instanceid )

The current user can view custom fields for the given question.

Parameters

field_controller	$field
int	$instanceid	id of the question to test edit permission

Return values

bool	true if the current can edit custom fields, false otherwise

Reimplemented from core_customfield\handler.

◆ can_view_type()

qbank_customfields\customfield\question_handler::can_view_type	(	field_controller	$field,
		context	$context )

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.

Parameters

field_controller	$field	The field trying to be viewed.
context	$context	The context the field is being displayed in.

Return values

bool	true if the current can edit custom fields, false otherwise.

◆ config_form_definition()

qbank_customfields\customfield\question_handler::config_form_definition ( \MoodleQuickForm $mform )

Add custom controls to the field configuration form that will be saved.

Parameters

MoodleQuickForm $mform The form to add the custom fields to.

Reimplemented from core_customfield\handler.

◆ create()

static qbank_customfields\customfield\question_handler::create ( int $itemid = 0 )

static

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.

Parameters

int $itemid Always zero.

Return values

qbank_customfields\customfield\question_handler

Reimplemented from core_customfield\handler.

◆ create_category()

core_customfield\handler::create_category ( string $name = null )

inherited

Creates a new category and inserts it to the database.

Parameters

string $name name of the category, null to generate automatically

Return values

int	id of the new category

◆ delete_category()

core_customfield\handler::delete_category ( category_controller $category )

inherited

Permanently delete category, all fields in it and all associated data.

Parameters

category_controller $category

Return values

bool

◆ delete_field_configuration()

core_customfield\handler::delete_field_configuration ( field_controller $field )

inherited

Permanently delete a custom field configuration and all associated data.

Parameters

field_controller $field

Return values

bool

◆ delete_instance()

core_customfield\handler::delete_instance ( int $instanceid )

inherited

Deletes all data related to all fields of an instance.

Parameters

int $instanceid

◆ display_custom_categories_fields()

qbank_customfields\customfield\question_handler::display_custom_categories_fields ( array $catfielddata )

Render the custom field category and filed data as HTML ready for display.

Parameters

array $catfielddata Array of categories and field names and values.

Return values

string The HTML to display.

◆ display_custom_field_table()

qbank_customfields\customfield\question_handler::display_custom_field_table ( object $fielddata )

Get the custom data for the given field and render HTML ready for display in question table.

Parameters

object $fielddata The field data used for display.

Return values

string The HTML to display in the table column.

◆ display_custom_fields_data()

core_customfield\handler::display_custom_fields_data ( array $fieldsdata )

inherited

Display visible custom fields.

This is a sample implementation that can be overridden in each handler.

Parameters

data_controller[] $fieldsdata

Return values

string

◆ export_instance_data()

core_customfield\handler::export_instance_data	(	int	$instanceid,
		bool	$returnall = false )

inherited

Returns the custom field values for an individual instance ready to be displayed.

The caller must check access to the instance itself before invoking this method

The result is an array of core_customfield\output\field_data objects

Parameters

int	$instanceid
bool	$returnall

Return values

core_customfield\output\field_data[]

◆ export_instance_data_object()

core_customfield\handler::export_instance_data_object	(	int	$instanceid,
		bool	$returnall = false )

inherited

Returns the custom field values for an individual instance ready to be displayed.

The caller must check access to the instance itself before invoking this method

The result is a class where properties are fields short names and the values their export values for this instance

Parameters

int	$instanceid
bool	$returnall

Return values

stdClass

◆ generate_category_name()

core_customfield\handler::generate_category_name ( $suffix = 0 )

protectedinherited

Generates a name for the new category.

Parameters

int $suffix

Return values

string

◆ get_area()

core_customfield\handler::get_area ( )

inherited

Get area.

Return values

string

◆ get_available_field_types()

core_customfield\handler::get_available_field_types ( )

inherited

Get field types array.

Return values

array

◆ get_categories_fields_data()

qbank_customfields\customfield\question_handler::get_categories_fields_data ( int $instanceid )

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.

Parameters

int $instanceid The instance id to get the data for.

Return values

array\$cfdata The fetched data

◆ get_categories_with_fields()

core_customfield\handler::get_categories_with_fields ( )

inherited

Returns array of categories, each of them contains a list of fields definitions.

Return values

category_controller[]

◆ get_component()

core_customfield\handler::get_component ( )

inherited

Get component.

Return values

string

◆ get_configuration_context()

qbank_customfields\customfield\question_handler::get_configuration_context ( )

Context that should be used for new categories created by this handler.

Return values

context the context for configuration

Reimplemented from core_customfield\handler.

◆ get_configuration_url()

qbank_customfields\customfield\question_handler::get_configuration_url ( )

URL for configuration page for the fields for the question custom fields.

Return values

moodle_url The URL to configure custom fields for this component

Reimplemented from core_customfield\handler.

◆ get_description_text_options()

core_customfield\handler::get_description_text_options ( )

inherited

Options for processing embedded files in the field description.

Handlers may want to extend it to disable files support and/or specify 'noclean'=>true Context is not necessary here

Return values

array

◆ get_editable_fields()

core_customfield\handler::get_editable_fields ( int $instanceid )

inherited

Get editable fields.

Parameters

int $instanceid

Return values

field_controller[]

◆ get_field_data()

qbank_customfields\customfield\question_handler::get_field_data	(	\core_customfield\field_controller	$field,
		int	$instanceid )

Given a field and instance id get all the filed data.

Parameters

field_controller	$field	The field to get the data for.
int	$instanceid	The instance id to get the data for.

Return values

core_customfield\data_controller The fetched data.

◆ get_fields()

core_customfield\handler::get_fields ( )

inherited

Returns list of fields defined for this instance as an array (not groupped by categories)

Fields are sorted in the same order they would appear on the instance edit form

Note that this function returns all fields in all categories regardless of whether the current user can view or edit data associated with them

Return values

field_controller[]

◆ get_handler()

static core_customfield\handler::get_handler	(	string	$component,
		string	$area,
		int	$itemid = 0 )

staticinherited

Returns an instance of handler by component/area/itemid.

Parameters

string	$component	component name of full frankenstyle plugin name
string	$area	name of the area (each component/plugin may define handlers for multiple areas)
int	$itemid	item id if the area uses them (usually not used)

Return values

handler

◆ get_instance_context()

qbank_customfields\customfield\question_handler::get_instance_context ( int $instanceid = 0 )

Returns the context for the data associated with the given instanceid.

Parameters

int $instanceid id of the record to get the context for

Return values

context the context for the given record

Exceptions

coding_exception

Reimplemented from core_customfield\handler.

◆ get_instance_data()

core_customfield\handler::get_instance_data	(	int	$instanceid,
		bool	$returnall = false )

inherited

Returns the custom field values for an individual instance.

The caller must check access to the instance itself before invoking this method

The result is an array of data_controller objects

Parameters

int	$instanceid
bool	$returnall	return data for all fields (by default only visible fields)

Return values

data_controller[] array of data_controller objects indexed by fieldid. All fields are present, some data_controller objects may have 'id', some not In the last case data_controller\get_value() and export_value() functions will return default values.

◆ get_instance_data_for_backup()

core_customfield\handler::get_instance_data_for_backup ( int $instanceid )

inherited

Get raw data associated with all fields current user can view or edit.

Parameters

int $instanceid

Return values

array

Reimplemented in core_group\customfield\group_handler, and core_group\customfield\grouping_handler.

◆ get_instances_data()

core_customfield\handler::get_instances_data	(	array	$instanceids,
		bool	$returnall = false )

inherited

Returns the custom fields values for multiple instances.

The caller must check access to the instance itself before invoking this method

The result is an array of data_controller objects

Parameters

int[]	$instanceids
bool	$returnall	return data for all fields (by default only visible fields)

Return values

data_controller[][] 2-dimension array, first index is instanceid, second index is fieldid. All instanceids and all fieldids are present, some data_controller objects may have 'id', some not. In the last case data_controller\get_value() and export_value() functions will return default values.

◆ get_itemid()

core_customfield\handler::get_itemid ( )

inherited

Get itemid.

Return values

int|null

◆ get_parent_context()

qbank_customfields\customfield\question_handler::get_parent_context ( )

protected

Returns the parent context for the question.

Return values

context

◆ get_visible_fields()

core_customfield\handler::get_visible_fields ( int $instanceid )

protectedinherited

Get visible fields.

Parameters

int $instanceid

Return values

field_controller[]

◆ instance_form_before_set_data()

core_customfield\handler::instance_form_before_set_data ( stdClass $instance )

inherited

Prepares the custom fields data related to the instance to pass to mform->set_data()

Example: $instance = $DB->get_record(...); // .... prepare editor, filemanager, add tags, etc. $handler->instance_form_before_set_data($instance); $form->set_data($instance);

Parameters

stdClass $instance the instance that has custom fields, if 'id' attribute is present the custom fields for this instance will be added, otherwise the default values will be added.

◆ instance_form_definition()

core_customfield\handler::instance_form_definition	(	\MoodleQuickForm	$mform,
		int	$instanceid = 0,
		?string	$headerlangidentifier = null,
		?string	$headerlangcomponent = null )

inherited

Adds custom fields to instance editing form.

Example: public function definition() { // ... normal instance definition, including hidden 'id' field. $handler->instance_form_definition($this->_form, $instanceid); $this->add_action_buttons(); }

Parameters

MoodleQuickForm	$mform
int	$instanceid	id of the instance, can be null when instance is being created
string	$headerlangidentifier	If specified, a lang string will be used for field category headings
string	$headerlangcomponent

◆ instance_form_definition_after_data()

core_customfield\handler::instance_form_definition_after_data	(	\MoodleQuickForm	$mform,
		int	$instanceid = 0 )

inherited

Form data definition callback.

This method is called from moodleform\definition_after_data and allows to tweak mform with some data coming directly from the field plugin data controller.

Parameters

MoodleQuickForm	$mform
int	$instanceid

◆ instance_form_save()

core_customfield\handler::instance_form_save	(	stdClass	$instance,
		bool	$isnewinstance = false )

inherited

Saves the given data for custom fields, must be called after the instance is saved and id is present.

Example: if ($data = $form->get_data()) { // ... save main instance, set $data->id if instance was created. $handler->instance_form_save($data); redirect(...); }

Parameters

stdClass	$instance	data received from a form
bool	$isnewinstance	if this is call is made during instance creation

◆ instance_form_validation()

core_customfield\handler::instance_form_validation	(	array	$data,
		array	$files )

inherited

Validates the given data for custom fields, used in moodleform validation() function.

Example: public function validation($data, $files) { $errors = []; // .... check other fields. $errors = array_merge($errors, $handler->instance_form_validation($data, $files)); return $errors; }

Parameters

array	$data
array	$files

Return values

array validation errors

◆ move_category()

core_customfield\handler::move_category	(	category_controller	$category,
		int	$beforeid = 0 )

inherited

Change sort order of the categories.

Parameters

category_controller	$category	category that needs to be moved
int	$beforeid	id of the category this category needs to be moved before, 0 to move to the end

◆ move_field()

core_customfield\handler::move_field	(	field_controller	$field,
		int	$categoryid,
		int	$beforeid = 0 )

inherited

Change fields sort order, move field to another category.

Parameters

field_controller	$field	field that needs to be moved
int	$categoryid	category that needs to be moved
int	$beforeid	id of the category this category needs to be moved before, 0 to move to the end

◆ rename_category()

core_customfield\handler::rename_category	(	category_controller	$category,
		string	$name )

inherited

Change name for a field category.

Parameters

category_controller	$category
string	$name

◆ restore_instance_data_from_backup()

qbank_customfields\customfield\question_handler::restore_instance_data_from_backup	(	\restore_task	$task,
		array	$data )

Creates or updates the question custom field data when restoring from a backup.

Parameters

restore_task	$task
array	$data

Reimplemented from core_customfield\handler.

◆ save_field_configuration()

core_customfield\handler::save_field_configuration	(	field_controller	$field,
		stdClass	$data )

inherited

Save the field configuration with the data from the form.

Parameters

field_controller	$field
stdClass	$data	data from the form

◆ set_parent_context()

qbank_customfields\customfield\question_handler::set_parent_context ( \context $context )

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

Parameters

context $context

◆ uses_categories()

core_customfield\handler::uses_categories ( )

inherited

Uses categories.

Return values

bool

◆ validate_category()

core_customfield\handler::validate_category ( category_controller $category )

protectedinherited

Validate that the given category belongs to this handler.

Parameters

category_controller $category

Return values

category_controller

Exceptions

moodle_exception

◆ validate_field()

core_customfield\handler::validate_field ( field_controller $field )

protectedinherited

Validate that the given field belongs to this handler.

Parameters

field_controller $field

Return values

field_controller

Exceptions

moodle_exception

The documentation for this class was generated from the following file:

question/bank/customfields/classes/customfield/question_handler.php

Public Member Functions

Static Public Member Functions

Public Attributes

Protected Member Functions

Protected Attributes

Static Protected Attributes

Member Function Documentation

◆ can_backup()

◆ can_configure()

◆ can_edit()

◆ can_view()

◆ can_view_type()

◆ config_form_definition()

◆ create()

◆ create_category()

◆ delete_category()

◆ delete_field_configuration()

◆ delete_instance()

◆ display_custom_categories_fields()

◆ display_custom_field_table()

◆ display_custom_fields_data()

◆ export_instance_data()

◆ export_instance_data_object()

◆ generate_category_name()

◆ get_area()

◆ get_available_field_types()

◆ get_categories_fields_data()

◆ get_categories_with_fields()

◆ get_component()

◆ get_configuration_context()

◆ get_configuration_url()

◆ get_description_text_options()

◆ get_editable_fields()

◆ get_field_data()

◆ get_fields()

◆ get_handler()

◆ get_instance_context()

◆ get_instance_data()

◆ get_instance_data_for_backup()

◆ get_instances_data()

◆ get_itemid()

◆ get_parent_context()

◆ get_visible_fields()

◆ instance_form_before_set_data()

◆ instance_form_definition()

◆ instance_form_definition_after_data()

◆ instance_form_save()

◆ instance_form_validation()

◆ move_category()

◆ move_field()

◆ rename_category()

◆ restore_instance_data_from_backup()

◆ save_field_configuration()

◆ set_parent_context()

◆ uses_categories()

◆ validate_category()

◆ validate_field()