danielebarchiesi@4: <?php
danielebarchiesi@4: 
danielebarchiesi@4: /**
danielebarchiesi@4:  * @file
danielebarchiesi@4:  * Fill form elements with data from GET or POST values.
danielebarchiesi@4:  *
danielebarchiesi@4:  * Originally written by ea. Farris <eafarris@gmail.com>
danielebarchiesi@4:  * Based on an idea from chx, from the conversation at
danielebarchiesi@4:  * http://www.drupal.org/node/27155.
danielebarchiesi@4:  */
danielebarchiesi@4: 
danielebarchiesi@4: /**
danielebarchiesi@4:  * Implementation of hook_help().
danielebarchiesi@4:  */
danielebarchiesi@4: function prepopulate_help($path, $arg) {
danielebarchiesi@4:   switch ($path) {
danielebarchiesi@4:     case 'admin/modules#description':
danielebarchiesi@4:       return t('Pre-populates forms with HTTP GET or POST data');
danielebarchiesi@4:       break;
danielebarchiesi@4:   }
danielebarchiesi@4: }
danielebarchiesi@4: 
danielebarchiesi@4: /**
danielebarchiesi@4:  * Implementation of hook_form_alter().
danielebarchiesi@4:  */
danielebarchiesi@4: function prepopulate_form_alter(&$form, $form_state, $form_id) {
danielebarchiesi@4:   // Provide for accepting base64 encoded fields.
danielebarchiesi@4:   if (isset($_REQUEST['pp'])) {
danielebarchiesi@4:     parse_str(base64_decode($_REQUEST['pp']), $_REQUEST);
danielebarchiesi@4:   }
danielebarchiesi@4:   if (isset($_REQUEST['edit'])) {
danielebarchiesi@4:     $form['#after_build'][] = 'prepopulate_after_build';
danielebarchiesi@4:   }
danielebarchiesi@4: }
danielebarchiesi@4: 
danielebarchiesi@4: /**
danielebarchiesi@4:  * An #after_build function to set the values prepopulated in the request.
danielebarchiesi@4:  */
danielebarchiesi@4: function prepopulate_after_build($form, &$form_state) {
danielebarchiesi@4:   if (isset($_REQUEST['pp'])) {
danielebarchiesi@4:     parse_str(base64_decode($_REQUEST['pp']), $_REQUEST);
danielebarchiesi@4:   }
danielebarchiesi@4:   if (isset($_REQUEST['edit'])) {
danielebarchiesi@4:     $request = (array)$_REQUEST['edit'];
danielebarchiesi@4:     _prepopulate_request_walk($form, $request);
danielebarchiesi@4:   }
danielebarchiesi@4:   return $form;
danielebarchiesi@4: }
danielebarchiesi@4: 
danielebarchiesi@4: /**
danielebarchiesi@4:  * Internal helper to set element values from the $_REQUEST variable.
danielebarchiesi@4:  *
danielebarchiesi@4:  * @param &$form
danielebarchiesi@4:  *   Array. A form element.
danielebarchiesi@4:  * @param &$requestslice
danielebarchiesi@4:  *   String or array. Value(s) to be applied to the element.
danielebarchiesi@4:  */
danielebarchiesi@4: function _prepopulate_request_walk(&$form, &$requestslice) {
danielebarchiesi@4:   $limited_types = array('value', 'hidden', 'button', 'image_button');
danielebarchiesi@4:   if (is_array($requestslice)) {
danielebarchiesi@4:     foreach (array_keys($requestslice) as $requestvar) {
danielebarchiesi@4:       if (element_child($requestvar) && !empty($form[$requestvar]) &&
danielebarchiesi@4:        (!isset($form[$requestvar]['#type']) || !in_array($form[$requestvar]['#type'], $limited_types))) {
danielebarchiesi@4:         if (!isset($form[$requestvar]['#access']) || $form[$requestvar]['#access'] != FALSE) {
danielebarchiesi@4:           _prepopulate_request_walk($form[$requestvar], $requestslice[$requestvar]);
danielebarchiesi@4:         }
danielebarchiesi@4:       }
danielebarchiesi@4:     }
danielebarchiesi@4:     if (!empty($form['#default_value']) && is_array($form['#default_value'])) {
danielebarchiesi@4:       $form['#default_value'] = array_merge($form['#default_value'], $requestslice);
danielebarchiesi@4:     }
danielebarchiesi@4:   }
danielebarchiesi@4:   else {
danielebarchiesi@4:     if ($form['#type'] == 'markup' || empty($form['#type']) ) {
danielebarchiesi@4:       $form['#value'] = check_plain($requestslice);
danielebarchiesi@4:     }
danielebarchiesi@4:     else {
danielebarchiesi@4:       $form['#value'] = $requestslice;
danielebarchiesi@4:     }
danielebarchiesi@4:   }
danielebarchiesi@4: }