pictcode / lib / Cake / View / XmlView.php @ 1a69c38c
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| 1 | 635eef61 | spyder1211 | <?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'); |
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| 16 | App::uses('Xml', 'Utility'); |
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| 17 | App::uses('Hash', 'Utility'); |
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| 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 { |
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| 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'; |
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| 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 $controller = null) { |
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| 69 | parent::__construct($controller); |
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| 70 | |||
| 71 | if (isset($controller->response) && $controller->response instanceof CakeResponse) { |
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| 72 | $controller->response->type('xml'); |
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| 73 | } |
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| 74 | } |
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| 75 | |||
| 76 | /**
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| 77 | * Skip loading helpers if this is a _serialize based view.
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| 78 | *
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| 79 | * @return void
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| 80 | */
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| 81 | public function loadHelpers() { |
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| 82 | if (isset($this->viewVars['_serialize'])) { |
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| 83 | return;
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| 84 | } |
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| 85 | parent::loadHelpers();
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| 86 | } |
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| 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, $layout = null) { |
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| 101 | if (isset($this->viewVars['_serialize'])) { |
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| 102 | return $this->_serialize($this->viewVars['_serialize']); |
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| 103 | } |
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| 104 | if ($view !== false && $this->_getViewFileName($view)) { |
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| 105 | return parent::render($view, false); |
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| 106 | } |
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| 107 | } |
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| 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) { |
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| 120 | $rootNode = isset($this->viewVars['_rootNode']) ? $this->viewVars['_rootNode'] : 'response'; |
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| 121 | |||
| 122 | if (is_array($serialize)) { |
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| 123 | $data = array($rootNode => array()); |
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| 124 | foreach ($serialize as $alias => $key) { |
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| 125 | if (is_numeric($alias)) { |
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| 126 | $alias = $key; |
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| 127 | } |
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| 128 | $data[$rootNode][$alias] = $this->viewVars[$key]; |
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| 129 | } |
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| 130 | } else {
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| 131 | $data = isset($this->viewVars[$serialize]) ? $this->viewVars[$serialize] : null; |
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| 132 | if (is_array($data) && Hash::numeric(array_keys($data))) { |
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| 133 | $data = array($rootNode => array($serialize => $data)); |
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| 134 | } |
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| 135 | } |
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| 136 | |||
| 137 | $options = array(); |
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| 138 | if (isset($this->viewVars['_xmlOptions'])) { |
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| 139 | $options = $this->viewVars['_xmlOptions']; |
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| 140 | } |
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| 141 | if (Configure::read('debug')) { |
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| 142 | $options['pretty'] = true; |
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| 143 | } |
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| 144 | |||
| 145 | if (isset($options['return']) && strtolower($options['return']) === 'domdocument') { |
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| 146 | return Xml::fromArray($data, $options)->saveXML(); |
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| 147 | } |
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| 148 | return Xml::fromArray($data, $options)->asXML(); |
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| 149 | } |
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| 150 | |||
| 151 | } |