Public Member Functions
	__construct (Conf $config, Database $db, EntityTable $entities, ElggStaticVariableCache $cache, PluginHooksService $hooks, ElggSession $session, Translator $translator)
	Constructor. More...

	getAccessList ($user_guid=0, $site_guid=0, $flush=false)
	Return a string of access_ids for $user_guid appropriate for inserting into an SQL IN clause. More...

	getAccessArray ($user_guid=0, $site_guid=0, $flush=false)
	Returns an array of access IDs a user is permitted to see. More...

	getWhereSql (array $options=array())
	Returns the SQL where clause for enforcing read access to data. More...

	hasAccessToEntity ($entity, $user=null)
	Can a user access an entity. More...

	getWriteAccessArray ($user_guid=0, $site_guid=0, $flush=false, array $input_params=array())
	Returns an array of access permissions that the user is allowed to save content with. More...

	canEdit ($collection_id, $user_guid=null)
	Can the user change this access collection? More...

	create ($name, $owner_guid=0, $site_guid=0)
	Creates a new access collection. More...

	update ($collection_id, $members)
	Updates the membership in an access collection. More...

	delete ($collection_id)
	Deletes a specified access collection and its membership. More...

	get ($collection_id)
	Get a specified access collection. More...

	addUser ($user_guid, $collection_id)
	Adds a user to an access collection. More...

	removeUser ($user_guid, $collection_id)
	Removes a user from an access collection. More...

	getEntityCollections ($owner_guid, $site_guid=0)
	Returns an array of database row objects of the access collections owned by $owner_guid. More...

	getMembers ($collection_id, $guids_only=false)
	Get all of members of an access collection. More...

	getCollectionsByMember ($member_guid, $site_guid=0)
	Return an array of database row objects of the access collections $entity_guid is a member of. More...

	getReadableAccessLevel ($entity_access_id)
	Return the name of an ACCESS_* constant or an access collection, but only if the logged in user owns the access collection or is an admin. More...

Protected Attributes
	$config

	$db

	$access_cache

	$hooks

	$session

	$entities

	$translator

	$site_guid

Detailed Description

Definition at line 24 of file AccessCollections.php.

Constructor & Destructor Documentation

Elgg\Database\AccessCollections::__construct	(	Conf	$config,
		Database	$db,
		EntityTable	$entities,
		ElggStaticVariableCache	$cache,
		PluginHooksService	$hooks,
		ElggSession	$session,
		Translator	$translator
	)

Constructor.

Parameters

Config	$config	Config
Database	$db	Database
EntityTable	$entities	Entity table
ElggStaticVariableCache	$cache	Access cache
PluginHooksService	$hooks	Hooks
ElggSession	$session	Session
Translator	$translator	Translator

Definition at line 77 of file AccessCollections.php.

Member Function Documentation

Elgg\Database\AccessCollections::addUser	(	$user_guid,
		$collection_id
	)

Adds a user to an access collection.

Triggers the 'access:collections:add_user', 'collection' plugin hook.

Parameters

int	$user_guid	The GUID of the user to add
int	$collection_id	The ID of the collection to add them to

Returns: bool

Definition at line 703 of file AccessCollections.php.

Elgg\Database\AccessCollections::canEdit	(	$collection_id,
		$user_guid = `null`
	)

Can the user change this access collection?

Use the plugin hook of 'access:collections:write', 'user' to change this.

See also: get_write_access_array() for details on the hook.

Respects access control disabling for admin users and elgg_set_ignore_access()

See also: get_write_access_array()

Parameters

int	$collection_id	The collection id
mixed	$user_guid	The user GUID to check for. Defaults to logged in user.

Returns: bool

Definition at line 519 of file AccessCollections.php.

Elgg\Database\AccessCollections::create	(	$name,
		$owner_guid = `0`,
		$site_guid = `0`
	)

Creates a new access collection.

Access colletions allow plugins and users to create granular access for entities.

Triggers plugin hook 'access:collections:addcollection', 'collection'

Definition at line 559 of file AccessCollections.php.

Elgg\Database\AccessCollections::delete ( $collection_id )

Deletes a specified access collection and its membership.

Parameters

int $collection_id The collection ID

Returns: bool

Definition at line 645 of file AccessCollections.php.

Elgg\Database\AccessCollections::get ( $collection_id )

Get a specified access collection.

Note: This doesn't return the members of an access collection, just the database row of the actual collection.

See also: get_members_of_access_collection()

Parameters

int $collection_id The collection ID

Returns: object|false

Definition at line 680 of file AccessCollections.php.

Elgg\Database\AccessCollections::getAccessArray	(	$user_guid = `0`,
		$site_guid = `0`,
		$flush = `false`
	)

Returns an array of access IDs a user is permitted to see.

Can be overridden with the 'access:collections:read', 'user' plugin hook.

Warning: A callback for that plugin hook needs to either not retrieve data from the database that would use the access system (triggering the plugin again) or ignore the second call. Otherwise, an infinite loop will be created.

This returns a list of all the collection ids a user owns or belongs to plus public and logged in access levels. If the user is an admin, it includes the private access level.

Definition at line 169 of file AccessCollections.php.

Elgg\Database\AccessCollections::getAccessList	(	$user_guid = `0`,
		$site_guid = `0`,
		$flush = `false`
	)

Return a string of access_ids for $user_guid appropriate for inserting into an SQL IN clause.

get_access_array

See also: get_access_array()

Parameters

int	$user_guid	User ID; defaults to currently logged in user
int	$site_guid	Site ID; defaults to current site
bool	$flush	If set to true, will refresh the access list from the database rather than using this function's cache.

Returns: string A list of access collections suitable for using in an SQL call private

Definition at line 110 of file AccessCollections.php.

Elgg\Database\AccessCollections::getCollectionsByMember	(	$member_guid,
		$site_guid = `0`
	)

Return an array of database row objects of the access collections $entity_guid is a member of.

Parameters

int	$member_guid	The entity guid
int	$site_guid	The GUID of the site (default: current site).

Returns: array|false

Definition at line 848 of file AccessCollections.php.

Elgg\Database\AccessCollections::getEntityCollections	(	$owner_guid,
		$site_guid = `0`
	)

Returns an array of database row objects of the access collections owned by $owner_guid.

Parameters

int	$owner_guid	The entity guid
int	$site_guid	The GUID of the site (default: current site).

Returns: array|false

Definition at line 784 of file AccessCollections.php.

Elgg\Database\AccessCollections::getMembers	(	$collection_id,
		$guids_only = `false`
	)

Get all of members of an access collection.

Parameters

int	$collection_id	The collection's ID
bool	$guids_only	If set to true, will only return the members' GUIDs (default: false)

Returns: ElggUser[]|int[]|false guids or entities if successful, false if not

Definition at line 813 of file AccessCollections.php.

Elgg\Database\AccessCollections::getReadableAccessLevel ( $entity_access_id )

Return the name of an ACCESS_* constant or an access collection, but only if the logged in user owns the access collection or is an admin.

Ownership requirement prevents us from exposing names of access collections that current user has been added to by other members and may contain sensitive classification of the current user (e.g. close friends vs acquaintances).

Returns a string in the language of the user for global access levels, e.g.'Public, 'Friends', 'Logged in', 'Private'; or a name of the owned access collection, e.g. 'My work colleagues'; or a name of the group or other access collection, e.g. 'Group: Elgg technical support'; or 'Limited' if the user access is restricted to read-only, e.g. a friends collection the user was added to

Parameters

int $entity_access_id The entity's access id

Returns: string

Since: 1.11

Definition at line 887 of file AccessCollections.php.

Elgg\Database\AccessCollections::getWhereSql ( array $options = array() )

Returns the SQL where clause for enforcing read access to data.

Note that if this code is executed in privileged mode it will return (1=1).

Otherwise it returns a where clause to retrieve the data that a user has permission to read.

Plugin authors can hook into the 'get_sql', 'access' plugin hook to modify, remove, or add to the where clauses. The plugin hook will pass an array with the current ors and ands to the function in the form: array( 'ors' => array(), 'ands' => array() )

The results will be combined into an SQL where clause in the form: ((or1 OR or2 OR orN) AND (and1 AND and2 AND andN))

Parameters

array

$options

Array in format:

table_alias => STR Optional table alias. This is based on the select and join clauses.
                Default is 'e'.

user_guid => INT Optional GUID for the user that we are retrieving data for. Defaults to the logged in user if null. Passing 0 will build a query for a logged out user (even if there is a logged in user)

use_enabled_clause => BOOL Optional. Should we append the enabled clause? The default is set by access_show_hidden_entities().

access_column => STR Optional access column name. Default is 'access_id'.

owner_guid_column => STR Optional owner_guid column. Default is 'owner_guid'.

guid_column => STR Optional guid_column. Default is 'guid'.

Returns: string private

Definition at line 292 of file AccessCollections.php.

Elgg\Database\AccessCollections::getWriteAccessArray	(		$user_guid = `0`,
			$site_guid = `0`,
			$flush = `false`,
		array	$input_params = `array()`
	)

Returns an array of access permissions that the user is allowed to save content with.

Permissions returned are of the form (id => 'name').

Example return value in English: array( 0 => 'Private', -2 => 'Friends', 1 => 'Logged in users', 2 => 'Public', 34 => 'My favorite friends', );

Plugin hook of 'access:collections:write', 'user'

Warning: this only returns access collections that the user owns plus the standard access levels. It does not return access collections that the user belongs to such as the access collection for a group.

Parameters

int	$user_guid	The user's GUID.
int	$site_guid	The current site.
bool	$flush	If this is set to true, this will ignore a cached access array
array	$input_params	Some parameters passed into an input/access view

Returns: array List of access permissions

Definition at line 453 of file AccessCollections.php.

Elgg\Database\AccessCollections::hasAccessToEntity	(	$entity,
		$user = `null`
	)

Can a user access an entity.

Warning: If a logged in user doesn't have access to an entity, the core engine will not load that entity.

This is mostly useful for checking if a user other than the logged in user has access to an entity that is currently loaded.

Parameters

ElggEntity	$entity	The entity to check access for.
ElggUser	$user	Optionally user to check access for. Defaults to logged in user (which is a useless default).

Returns: bool

Definition at line 395 of file AccessCollections.php.

Elgg\Database\AccessCollections::removeUser	(	$user_guid,
		$collection_id
	)

Removes a user from an access collection.

Triggers the 'access:collections:remove_user', 'collection' plugin hook.

Parameters

int	$user_guid	The user GUID
int	$collection_id	The access collection ID

Returns: bool

Definition at line 746 of file AccessCollections.php.

Elgg\Database\AccessCollections::update	(	$collection_id,
		$members
	)

Updates the membership in an access collection.

Warning: Expects a full list of all members that should be part of the access collection

Note: This will run all hooks associated with adding or removing members to access collections.

Parameters

int	$collection_id	The ID of the collection.
array	$members	Array of member GUIDs

Returns: bool

Definition at line 611 of file AccessCollections.php.

Member Data Documentation

Elgg\Database\AccessCollections::$access_cache

protected

Definition at line 39 of file AccessCollections.php.

Elgg\Database\AccessCollections::$config

protected

Definition at line 29 of file AccessCollections.php.

Elgg\Database\AccessCollections::$db

protected

Definition at line 34 of file AccessCollections.php.

Elgg\Database\AccessCollections::$entities

protected

Definition at line 54 of file AccessCollections.php.

Elgg\Database\AccessCollections::$hooks

protected

Definition at line 44 of file AccessCollections.php.

Elgg\Database\AccessCollections::$session

protected

Definition at line 49 of file AccessCollections.php.

Elgg\Database\AccessCollections::$site_guid

protected

Definition at line 64 of file AccessCollections.php.

Elgg\Database\AccessCollections::$translator

protected

Definition at line 59 of file AccessCollections.php.

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

engine/classes/Elgg/Database/AccessCollections.php

Public Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation