pictcode / lib / Cake / View / XmlView.php @ master
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| 1 | <?php
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| 2 | /**
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| 3 |  * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
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| 4 |  * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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| 5 |  *
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| 6 |  * Licensed under The MIT License
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| 7 |  * For full copyright and license information, please see the LICENSE.txt
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| 8 |  * Redistributions of files must retain the above copyright notice.
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| 9 |  *
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| 10 |  * @copyright     Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
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| 11 |  * @link          http://cakephp.org CakePHP(tm) Project
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| 12 |  * @license       http://www.opensource.org/licenses/mit-license.php MIT License
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| 13 |  */
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| 14 |  | 
| 15 | App::uses('View', 'View'); | 
| 16 | App::uses('Xml', 'Utility'); | 
| 17 | App::uses('Hash', 'Utility'); | 
| 18 |  | 
| 19 | /**
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| 20 |  * A view class that is used for creating XML responses.
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| 21 |  *
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| 22 |  * By setting the '_serialize' key in your controller, you can specify a view variable
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| 23 |  * that should be serialized to XML and used as the response for the request.
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| 24 |  * This allows you to omit views + layouts, if your just need to emit a single view
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| 25 |  * variable as the XML response.
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| 26 |  *
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| 27 |  * In your controller, you could do the following:
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| 28 |  *
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| 29 |  * `$this->set(array('posts' => $posts, '_serialize' => 'posts'));`
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| 30 |  *
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| 31 |  * When the view is rendered, the `$posts` view variable will be serialized
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| 32 |  * into XML.
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| 33 |  *
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| 34 |  * **Note** The view variable you specify must be compatible with Xml::fromArray().
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| 35 |  *
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| 36 |  * You can also define `'_serialize'` as an array. This will create an additional
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| 37 |  * top level element named `<response>` containing all the named view variables:
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| 38 |  *
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| 39 |  * ```
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| 40 |  * $this->set(compact('posts', 'users', 'stuff'));
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| 41 |  * $this->set('_serialize', array('posts', 'users'));
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| 42 |  * ```
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| 43 |  *
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| 44 |  * The above would generate a XML object that looks like:
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| 45 |  *
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| 46 |  * `<response><posts>...</posts><users>...</users></response>`
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| 47 |  *
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| 48 |  * If you don't use the `_serialize` key, you will need a view. You can use extended
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| 49 |  * views to provide layout like functionality.
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| 50 |  *
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| 51 |  * @package       Cake.View
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| 52 |  * @since         CakePHP(tm) v 2.1.0
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| 53 |  */
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| 54 | class XmlView extends View { | 
| 55 |  | 
| 56 | /**
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| 57 |  * The subdirectory. XML views are always in xml.
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| 58 |  *
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| 59 |  * @var string
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| 60 |  */
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| 61 | public $subDir = 'xml'; | 
| 62 |  | 
| 63 | /**
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| 64 |  * Constructor
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| 65 |  *
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| 66 |  * @param Controller $controller Controller instance.
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| 67 |  */
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| 68 | public function __construct(Controller $controller = null) { | 
| 69 | parent::__construct($controller); | 
| 70 |  | 
| 71 | if (isset($controller->response) && $controller->response instanceof CakeResponse) { | 
| 72 | $controller->response->type('xml'); | 
| 73 | } | 
| 74 | } | 
| 75 |  | 
| 76 | /**
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| 77 |  * Skip loading helpers if this is a _serialize based view.
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| 78 |  *
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| 79 |  * @return void
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| 80 |  */
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| 81 | public function loadHelpers() { | 
| 82 | if (isset($this->viewVars['_serialize'])) { | 
| 83 |                         return;
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| 84 | } | 
| 85 |                 parent::loadHelpers();
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| 86 | } | 
| 87 |  | 
| 88 | /**
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| 89 |  * Render a XML view.
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| 90 |  *
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| 91 |  * Uses the special '_serialize' parameter to convert a set of
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| 92 |  * view variables into a XML response. Makes generating simple
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| 93 |  * XML responses very easy. You can omit the '_serialize' parameter,
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| 94 |  * and use a normal view + layout as well.
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| 95 |  *
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| 96 |  * @param string $view The view being rendered.
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| 97 |  * @param string $layout The layout being rendered.
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| 98 |  * @return string The rendered view.
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| 99 |  */
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| 100 | public function render($view = null, $layout = null) { | 
| 101 | if (isset($this->viewVars['_serialize'])) { | 
| 102 | return $this->_serialize($this->viewVars['_serialize']); | 
| 103 | } | 
| 104 | if ($view !== false && $this->_getViewFileName($view)) { | 
| 105 | return parent::render($view, false); | 
| 106 | } | 
| 107 | } | 
| 108 |  | 
| 109 | /**
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| 110 |  * Serialize view vars.
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| 111 |  *
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| 112 |  * ### Special parameters
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| 113 |  * `_xmlOptions` You can set an array of custom options for Xml::fromArray() this way, e.g.
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| 114 |  *   'format' as 'attributes' instead of 'tags'.
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| 115 |  *
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| 116 |  * @param array $serialize The viewVars that need to be serialized.
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| 117 |  * @return string The serialized data
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| 118 |  */
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| 119 | protected function _serialize($serialize) { | 
| 120 | $rootNode = isset($this->viewVars['_rootNode']) ? $this->viewVars['_rootNode'] : 'response'; | 
| 121 |  | 
| 122 | if (is_array($serialize)) { | 
| 123 | $data = array($rootNode => array()); | 
| 124 | foreach ($serialize as $alias => $key) { | 
| 125 | if (is_numeric($alias)) { | 
| 126 | $alias = $key; | 
| 127 | } | 
| 128 | $data[$rootNode][$alias] = $this->viewVars[$key]; | 
| 129 | } | 
| 130 |                 } else {
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| 131 | $data = isset($this->viewVars[$serialize]) ? $this->viewVars[$serialize] : null; | 
| 132 | if (is_array($data) && Hash::numeric(array_keys($data))) { | 
| 133 | $data = array($rootNode => array($serialize => $data)); | 
| 134 | } | 
| 135 | } | 
| 136 |  | 
| 137 | $options = array(); | 
| 138 | if (isset($this->viewVars['_xmlOptions'])) { | 
| 139 | $options = $this->viewVars['_xmlOptions']; | 
| 140 | } | 
| 141 | if (Configure::read('debug')) { | 
| 142 | $options['pretty'] = true; | 
| 143 | } | 
| 144 |  | 
| 145 | if (isset($options['return']) && strtolower($options['return']) === 'domdocument') { | 
| 146 | return Xml::fromArray($data, $options)->saveXML(); | 
| 147 | } | 
| 148 | return Xml::fromArray($data, $options)->asXML(); | 
| 149 | } | 
| 150 |  | 
| 151 | } |