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Slim/Middleware/MethodOverride.php 3.4 KB
219b8036   luigser   DEEP
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  <?php
  /**
   * Slim - a micro PHP 5 framework
   *
   * @author      Josh Lockhart <info@slimframework.com>
   * @copyright   2011 Josh Lockhart
   * @link        http://www.slimframework.com
   * @license     http://www.slimframework.com/license
   * @version     2.6.1
   * @package     Slim
   *
   * MIT LICENSE
   *
   * Permission is hereby granted, free of charge, to any person obtaining
   * a copy of this software and associated documentation files (the
   * "Software"), to deal in the Software without restriction, including
   * without limitation the rights to use, copy, modify, merge, publish,
   * distribute, sublicense, and/or sell copies of the Software, and to
   * permit persons to whom the Software is furnished to do so, subject to
   * the following conditions:
   *
   * The above copyright notice and this permission notice shall be
   * included in all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
   * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
   * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
   * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
   * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   */
  namespace Slim\Middleware;
  
   /**
    * HTTP Method Override
    *
    * This is middleware for a Slim application that allows traditional
    * desktop browsers to submit pseudo PUT and DELETE requests by relying
    * on a pre-determined request parameter. Without this middleware,
    * desktop browsers are only able to submit GET and POST requests.
    *
    * This middleware is included automatically!
    *
    * @package    Slim
    * @author     Josh Lockhart
    * @since      1.6.0
    */
  class MethodOverride extends \Slim\Middleware
  {
      /**
       * @var array
       */
      protected $settings;
  
      /**
       * Constructor
       * @param  array  $settings
       */
      public function __construct($settings = array())
      {
          $this->settings = array_merge(array('key' => '_METHOD'), $settings);
      }
  
      /**
       * Call
       *
       * Implements Slim middleware interface. This method is invoked and passed
       * an array of environment variables. This middleware inspects the environment
       * variables for the HTTP method override parameter; if found, this middleware
       * modifies the environment settings so downstream middleware and/or the Slim
       * application will treat the request with the desired HTTP method.
       *
       * @return array[status, header, body]
       */
      public function call()
      {
          $env = $this->app->environment();
          if (isset($env['HTTP_X_HTTP_METHOD_OVERRIDE'])) {
              // Header commonly used by Backbone.js and others
              $env['slim.method_override.original_method'] = $env['REQUEST_METHOD'];
              $env['REQUEST_METHOD'] = strtoupper($env['HTTP_X_HTTP_METHOD_OVERRIDE']);
          } elseif (isset($env['REQUEST_METHOD']) && $env['REQUEST_METHOD'] === 'POST') {
              // HTML Form Override
              $req = new \Slim\Http\Request($env);
              $method = $req->post($this->settings['key']);
              if ($method) {
                  $env['slim.method_override.original_method'] = $env['REQUEST_METHOD'];
                  $env['REQUEST_METHOD'] = strtoupper($method);
              }
          }
          $this->next->call();
      }
  }