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mareksebera
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296
lib/Cake/Model/BehaviorCollection.php
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296
lib/Cake/Model/BehaviorCollection.php
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<?php
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/**
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* BehaviorCollection
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*
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* Provides management and interface for interacting with collections of behaviors.
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*
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* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
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* Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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*
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* Licensed under The MIT License
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* For full copyright and license information, please see the LICENSE.txt
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* Redistributions of files must retain the above copyright notice.
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*
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* @copyright Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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* @link http://cakephp.org CakePHP(tm) Project
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* @package Cake.Model
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* @since CakePHP(tm) v 1.2.0.0
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* @license http://www.opensource.org/licenses/mit-license.php MIT License
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*/
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App::uses('ObjectCollection', 'Utility');
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App::uses('CakeEventListener', 'Event');
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/**
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* Model behavior collection class.
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*
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* Defines the Behavior interface, and contains common model interaction functionality.
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*
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* @package Cake.Model
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*/
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class BehaviorCollection extends ObjectCollection implements CakeEventListener {
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/**
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* Stores a reference to the attached name
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*
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* @var string
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*/
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public $modelName = null;
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/**
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* Keeps a list of all methods of attached behaviors
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*
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* @var array
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*/
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protected $_methods = array();
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/**
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* Keeps a list of all methods which have been mapped with regular expressions
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*
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* @var array
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*/
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protected $_mappedMethods = array();
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/**
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* Attaches a model object and loads a list of behaviors
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*
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* @param string $modelName Model name.
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* @param array $behaviors Behaviors list.
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* @return void
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*/
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public function init($modelName, $behaviors = array()) {
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$this->modelName = $modelName;
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if (!empty($behaviors)) {
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foreach (BehaviorCollection::normalizeObjectArray($behaviors) as $config) {
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$this->load($config['class'], $config['settings']);
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}
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}
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}
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/**
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* Backwards compatible alias for load()
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*
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* @param string $behavior Behavior name.
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* @param array $config Configuration options.
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* @return void
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* @deprecated Will be removed in 3.0. Replaced with load().
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*/
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public function attach($behavior, $config = array()) {
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return $this->load($behavior, $config);
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}
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/**
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* Loads a behavior into the collection. You can use use `$config['enabled'] = false`
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* to load a behavior with callbacks disabled. By default callbacks are enabled. Disable behaviors
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* can still be used as normal.
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*
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* You can alias your behavior as an existing behavior by setting the 'className' key, i.e.,
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* {{{
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* public $actsAs = array(
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* 'Tree' => array(
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* 'className' => 'AliasedTree'
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* );
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* );
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* }}}
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* All calls to the `Tree` behavior would use `AliasedTree` instead.
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*
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* @param string $behavior CamelCased name of the behavior to load
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* @param array $config Behavior configuration parameters
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* @return bool True on success, false on failure
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* @throws MissingBehaviorException when a behavior could not be found.
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*/
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public function load($behavior, $config = array()) {
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if (isset($config['className'])) {
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$alias = $behavior;
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$behavior = $config['className'];
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}
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$configDisabled = isset($config['enabled']) && $config['enabled'] === false;
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$priority = isset($config['priority']) ? $config['priority'] : $this->defaultPriority;
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unset($config['enabled'], $config['className'], $config['priority']);
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list($plugin, $name) = pluginSplit($behavior, true);
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if (!isset($alias)) {
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$alias = $name;
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}
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$class = $name . 'Behavior';
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App::uses($class, $plugin . 'Model/Behavior');
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if (!class_exists($class)) {
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throw new MissingBehaviorException(array(
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'class' => $class,
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'plugin' => substr($plugin, 0, -1)
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));
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}
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if (!isset($this->{$alias})) {
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if (ClassRegistry::isKeySet($class)) {
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$this->_loaded[$alias] = ClassRegistry::getObject($class);
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} else {
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$this->_loaded[$alias] = new $class();
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ClassRegistry::addObject($class, $this->_loaded[$alias]);
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}
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} elseif (isset($this->_loaded[$alias]->settings) && isset($this->_loaded[$alias]->settings[$this->modelName])) {
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if ($config !== null && $config !== false) {
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$config = array_merge($this->_loaded[$alias]->settings[$this->modelName], $config);
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} else {
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$config = array();
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}
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}
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if (empty($config)) {
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$config = array();
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}
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$this->_loaded[$alias]->settings['priority'] = $priority;
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$this->_loaded[$alias]->setup(ClassRegistry::getObject($this->modelName), $config);
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foreach ($this->_loaded[$alias]->mapMethods as $method => $methodAlias) {
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$this->_mappedMethods[$method] = array($alias, $methodAlias);
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}
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$methods = get_class_methods($this->_loaded[$alias]);
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$parentMethods = array_flip(get_class_methods('ModelBehavior'));
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$callbacks = array(
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'setup', 'cleanup', 'beforeFind', 'afterFind', 'beforeSave', 'afterSave',
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'beforeDelete', 'afterDelete', 'onError'
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);
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foreach ($methods as $m) {
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if (!isset($parentMethods[$m])) {
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$methodAllowed = (
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$m[0] !== '_' && !array_key_exists($m, $this->_methods) &&
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!in_array($m, $callbacks)
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);
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if ($methodAllowed) {
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$this->_methods[$m] = array($alias, $m);
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}
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}
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}
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if ($configDisabled) {
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$this->disable($alias);
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} elseif (!$this->enabled($alias)) {
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$this->enable($alias);
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} else {
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$this->setPriority($alias, $priority);
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}
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return true;
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}
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/**
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* Detaches a behavior from a model
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*
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* @param string $name CamelCased name of the behavior to unload
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* @return void
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*/
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public function unload($name) {
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list(, $name) = pluginSplit($name);
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if (isset($this->_loaded[$name])) {
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$this->_loaded[$name]->cleanup(ClassRegistry::getObject($this->modelName));
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parent::unload($name);
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}
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foreach ($this->_methods as $m => $callback) {
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if (is_array($callback) && $callback[0] === $name) {
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unset($this->_methods[$m]);
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}
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}
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}
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/**
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* Backwards compatible alias for unload()
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*
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* @param string $name Name of behavior
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* @return void
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* @deprecated Will be removed in 3.0. Use unload instead.
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*/
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public function detach($name) {
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return $this->unload($name);
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}
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/**
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* Dispatches a behavior method. Will call either normal methods or mapped methods.
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*
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* If a method is not handled by the BehaviorCollection, and $strict is false, a
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* special return of `array('unhandled')` will be returned to signal the method was not found.
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*
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* @param Model $model The model the method was originally called on.
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* @param string $method The method called.
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* @param array $params Parameters for the called method.
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* @param bool $strict If methods are not found, trigger an error.
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* @return array All methods for all behaviors attached to this object
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*/
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public function dispatchMethod($model, $method, $params = array(), $strict = false) {
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$method = $this->hasMethod($method, true);
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if ($strict && empty($method)) {
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trigger_error(__d('cake_dev', '%s - Method %s not found in any attached behavior', 'BehaviorCollection::dispatchMethod()', $method), E_USER_WARNING);
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return null;
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}
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if (empty($method)) {
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return array('unhandled');
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}
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if (count($method) === 3) {
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array_unshift($params, $method[2]);
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unset($method[2]);
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}
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return call_user_func_array(
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array($this->_loaded[$method[0]], $method[1]),
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array_merge(array(&$model), $params)
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);
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}
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/**
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* Gets the method list for attached behaviors, i.e. all public, non-callback methods.
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* This does not include mappedMethods.
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*
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* @return array All public methods for all behaviors attached to this collection
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*/
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public function methods() {
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return $this->_methods;
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}
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/**
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* Check to see if a behavior in this collection implements the provided method. Will
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* also check mappedMethods.
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*
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* @param string $method The method to find.
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* @param bool $callback Return the callback for the method.
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* @return mixed If $callback is false, a boolean will be returned, if its true, an array
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* containing callback information will be returned. For mapped methods the array will have 3 elements.
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*/
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public function hasMethod($method, $callback = false) {
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if (isset($this->_methods[$method])) {
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return $callback ? $this->_methods[$method] : true;
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}
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foreach ($this->_mappedMethods as $pattern => $target) {
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if (preg_match($pattern . 'i', $method)) {
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if ($callback) {
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$target[] = $method;
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return $target;
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}
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return true;
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}
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}
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return false;
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}
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/**
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* Returns the implemented events that will get routed to the trigger function
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* in order to dispatch them separately on each behavior
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*
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* @return array
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*/
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public function implementedEvents() {
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return array(
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'Model.beforeFind' => 'trigger',
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'Model.afterFind' => 'trigger',
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'Model.beforeValidate' => 'trigger',
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'Model.afterValidate' => 'trigger',
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'Model.beforeSave' => 'trigger',
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'Model.afterSave' => 'trigger',
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'Model.beforeDelete' => 'trigger',
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'Model.afterDelete' => 'trigger'
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);
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}
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}
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