Class ObjectCollection

Deals with Collections of objects. Keeping registries of those objects, loading and constructing new objects and triggering callbacks. Each subclass needs to implement its own load() functionality.

All core subclasses of ObjectCollection by convention loaded objects are stored in $this->_loaded. Enabled objects are stored in $this->_enabled. In addition, they all support an enabled option that controls the enabled/disabled state of the object when loaded.

Direct known subclasses

BehaviorCollection, ComponentCollection, HelperCollection, LogEngineCollection, TaskCollection
Abstract
Package: Cake\Utility
Copyright: Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
License: MIT License
Since: CakePHP(tm) v 2.0
Located at Cake/Utility/ObjectCollection.php

Method Detail

__getsource public

__get( string $name )

Provide public read access to the loaded objects

Parameters

string $name
Name of property to read

Returns

mixed
mixed

__issetsource public

__isset( string $name )

Provide isset access to _loaded

Parameters

string $name
Name of object being checked.

Returns

boolean
bool

attachedsource public

attached( string $name null )

Gets the list of attached objects, or, whether the given object is attached

Deprecated

3.0.0 Will be removed in 3.0. Use loaded instead.

Parameters

string $name optional null
Optional. The name of the object to check the status of. If omitted, returns an array of currently-attached objects

Returns

mixed
If $name is specified, returns the boolean status of the corresponding object. Otherwise, returns an array of all attached objects.

disablesource public

disable( string|array $name )

Disables callbacks on an object or array of objects. Public object methods are still callable as normal.

Parameters

string|array $name
CamelCased name of the objects(s) to disable (string or array)

enablesource public

enable( string|array $name , boolean $prioritize true )

Enables callbacks on an object or array of objects

Parameters

string|array $name
CamelCased name of the object(s) to enable (string or array)
boolean $prioritize optional true
Prioritize enabled list after enabling object(s)

enabledsource public

enabled( string $name null )

Gets the list of currently-enabled objects, or, the current status of a single objects

Parameters

string $name optional null
Optional. The name of the object to check the status of. If omitted, returns an array of currently-enabled object

Returns

mixed
If $name is specified, returns the boolean status of the corresponding object. Otherwise, returns an array of all enabled objects.

loadsource abstract public

load( string $name , array $options array() )

Loads a new object onto the collection. Can throw a variety of exceptions

Implementations of this class support a $options['enabled'] flag which enables/disables a loaded object.

Parameters

string $name
Name of object to load.
array $options optional array()
Array of configuration options for the object to be constructed.

Returns

object
the constructed object

loadedsource public

loaded( string $name null )

Gets the list of loaded objects, or, whether the given object is loaded

Parameters

string $name optional null
Optional. The name of the object to check the status of. If omitted, returns an array of currently-loaded objects

Returns

mixed
If $name is specified, returns the boolean status of the corresponding object. Otherwise, returns an array of all loaded objects.

normalizeObjectArraysource public static

normalizeObjectArray( array $objects )

Normalizes an object array, creates an array that makes lazy loading easier

Parameters

array $objects
Array of child objects to normalize.

Returns

array
Array of normalized objects.

prioritizesource public

prioritize( )

Prioritize list of enabled object

Returns

array
Prioritized list of object

setsource public

set( string $name null , Object $object null )

Adds or overwrites an instantiated object to the collection

Parameters

string $name optional null
Name of the object
Object $object optional null
The object to use

Returns

array
Loaded objects

setPrioritysource public

setPriority( string|array $name , integer|null $priority null )

Set priority for an object or array of objects

Parameters

string|array $name
CamelCased name of the object(s) to enable (string or array) If string the second param $priority is used else it should be an associative array with keys as object names and values as priorities to set.
integer|null $priority optional null
Integer priority to set or null for default

triggersource public

trigger( string|CakeEvent $callback , array $params array() , array $options array() )

Trigger a callback method on every object in the collection. Used to trigger methods on objects in the collection. Will fire the methods in the order they were attached.

Options

  • breakOn Set to the value or values you want the callback propagation to stop on. Can either be a scalar value, or an array of values to break on. Defaults to false.
  • break Set to true to enabled breaking. When a trigger is broken, the last returned value will be returned. If used in combination with collectReturn the collected results will be returned. Defaults to false.
  • collectReturn Set to true to collect the return of each object into an array. This array of return values will be returned from the trigger() call. Defaults to false.
  • modParams Allows each object the callback gets called on to modify the parameters to the next object. Setting modParams to an integer value will allow you to modify the parameter with that index. Any non-null value will modify the parameter index indicated. Defaults to false.

Parameters

string|CakeEvent $callback
Method to fire on all the objects. Its assumed all the objects implement the method you are calling. If an instance of CakeEvent is provided, then then Event name will parsed to get the callback name. This is done by getting the last word after any dot in the event name (eg. Model.afterSave event will trigger the afterSave callback)
array $params optional array()
Array of parameters for the triggered callback.
array $options optional array()
Array of options.

Returns

mixed
Either the last result or all results if collectReturn is on.

Throws

CakeException
when modParams is used with an index that does not exist.

unloadsource public

unload( string $name )

Name of the object to remove from the collection

Parameters

string $name
Name of the object to delete.

Properties summary

$_enabledsource

protected array

List of the currently-enabled objects

array()

$_loadedsource

protected array

A hash of loaded objects, indexed by name

array()

$defaultPrioritysource

public integer

Default object priority. A non zero integer.

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http://api.cakephp.org/2.7/class-ObjectCollection.html