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  • CakeErrorController
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  1: <?php
  2: /**
  3:  *
  4:  *
  5:  * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
  6:  * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
  7:  *
  8:  * Licensed under The MIT License
  9:  * For full copyright and license information, please see the LICENSE.txt
 10:  * Redistributions of files must retain the above copyright notice.
 11:  *
 12:  * @copyright     Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
 13:  * @link          http://cakephp.org CakePHP(tm) Project
 14:  * @package       Cake.Controller
 15:  * @since         CakePHP(tm) v 1.2
 16:  * @license       http://www.opensource.org/licenses/mit-license.php MIT License
 17:  */
 18: 
 19: App::uses('ComponentCollection', 'Controller');
 20: 
 21: /**
 22:  * Base class for an individual Component. Components provide reusable bits of
 23:  * controller logic that can be composed into a controller. Components also
 24:  * provide request life-cycle callbacks for injecting logic at specific points.
 25:  *
 26:  * ## Life cycle callbacks
 27:  *
 28:  * Components can provide several callbacks that are fired at various stages of the request
 29:  * cycle. The available callbacks are:
 30:  *
 31:  * - `initialize()` - Fired before the controller's beforeFilter method.
 32:  * - `startup()` - Fired after the controller's beforeFilter method.
 33:  * - `beforeRender()` - Fired before the view + layout are rendered.
 34:  * - `shutdown()` - Fired after the action is complete and the view has been rendered
 35:  *    but before Controller::afterFilter().
 36:  * - `beforeRedirect()` - Fired before a redirect() is done.
 37:  *
 38:  * @package       Cake.Controller
 39:  * @link          http://book.cakephp.org/2.0/en/controllers/components.html
 40:  * @see Controller::$components
 41:  */
 42: class Component extends Object {
 43: 
 44: /**
 45:  * Component collection class used to lazy load components.
 46:  *
 47:  * @var ComponentCollection
 48:  */
 49:     protected $_Collection;
 50: 
 51: /**
 52:  * Settings for this Component
 53:  *
 54:  * @var array
 55:  */
 56:     public $settings = array();
 57: 
 58: /**
 59:  * Other Components this component uses.
 60:  *
 61:  * @var array
 62:  */
 63:     public $components = array();
 64: 
 65: /**
 66:  * A component lookup table used to lazy load component objects.
 67:  *
 68:  * @var array
 69:  */
 70:     protected $_componentMap = array();
 71: 
 72: /**
 73:  * Constructor
 74:  *
 75:  * @param ComponentCollection $collection A ComponentCollection this component can use to lazy load its components
 76:  * @param array $settings Array of configuration settings.
 77:  */
 78:     public function __construct(ComponentCollection $collection, $settings = array()) {
 79:         $this->_Collection = $collection;
 80:         $this->settings = $settings;
 81:         $this->_set($settings);
 82:         if (!empty($this->components)) {
 83:             $this->_componentMap = ComponentCollection::normalizeObjectArray($this->components);
 84:         }
 85:     }
 86: 
 87: /**
 88:  * Magic method for lazy loading $components.
 89:  *
 90:  * @param string $name Name of component to get.
 91:  * @return mixed A Component object or null.
 92:  */
 93:     public function __get($name) {
 94:         if (isset($this->_componentMap[$name]) && !isset($this->{$name})) {
 95:             $settings = array_merge((array)$this->_componentMap[$name]['settings'], array('enabled' => false));
 96:             $this->{$name} = $this->_Collection->load($this->_componentMap[$name]['class'], $settings);
 97:         }
 98:         if (isset($this->{$name})) {
 99:             return $this->{$name};
100:         }
101:     }
102: 
103: /**
104:  * Called before the Controller::beforeFilter().
105:  *
106:  * @param Controller $controller Controller with components to initialize
107:  * @return void
108:  * @link http://book.cakephp.org/2.0/en/controllers/components.html#Component::initialize
109:  */
110:     public function initialize(Controller $controller) {
111:     }
112: 
113: /**
114:  * Called after the Controller::beforeFilter() and before the controller action
115:  *
116:  * @param Controller $controller Controller with components to startup
117:  * @return void
118:  * @link http://book.cakephp.org/2.0/en/controllers/components.html#Component::startup
119:  */
120:     public function startup(Controller $controller) {
121:     }
122: 
123: /**
124:  * Called before the Controller::beforeRender(), and before
125:  * the view class is loaded, and before Controller::render()
126:  *
127:  * @param Controller $controller Controller with components to beforeRender
128:  * @return void
129:  * @link http://book.cakephp.org/2.0/en/controllers/components.html#Component::beforeRender
130:  */
131:     public function beforeRender(Controller $controller) {
132:     }
133: 
134: /**
135:  * Called after Controller::render() and before the output is printed to the browser.
136:  *
137:  * @param Controller $controller Controller with components to shutdown
138:  * @return void
139:  * @link http://book.cakephp.org/2.0/en/controllers/components.html#Component::shutdown
140:  */
141:     public function shutdown(Controller $controller) {
142:     }
143: 
144: /**
145:  * Called before Controller::redirect(). Allows you to replace the URL that will
146:  * be redirected to with a new URL. The return of this method can either be an array or a string.
147:  *
148:  * If the return is an array and contains a 'url' key. You may also supply the following:
149:  *
150:  * - `status` The status code for the redirect
151:  * - `exit` Whether or not the redirect should exit.
152:  *
153:  * If your response is a string or an array that does not contain a 'url' key it will
154:  * be used as the new URL to redirect to.
155:  *
156:  * @param Controller $controller Controller with components to beforeRedirect
157:  * @param string|array $url Either the string or URL array that is being redirected to.
158:  * @param integer $status The status code of the redirect
159:  * @param boolean $exit Will the script exit.
160:  * @return array|void Either an array or null.
161:  * @link http://book.cakephp.org/2.0/en/controllers/components.html#Component::beforeRedirect
162:  */
163:     public function beforeRedirect(Controller $controller, $url, $status = null, $exit = true) {
164:     }
165: 
166: }
167: 
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