<?php
/* prepopulate.module -- fill forms with data from GET
 * ea. Farris <eafarris@gmail.com>
 *    based on an idea from chx, from the conversation at
 *    http://www.drupal.org/node/27155

 * used to be rest.module, from my sandbox
*/

// $Id: prepopulate.module,v 1.6 2007-01-28 16:41:36 eafarris Exp $

function prepopulate_help($section) {
  switch($section) {
    case 'admin/modules#description':
      return t('Pre-populates forms for allowed content types with HTTP GET data');
      break;
  } // endswitch $section
} // endfunction prepopulate_help()

function prepopulate_form_alter($form_id, &$form) {
  if ($form_id == 'node_type_form' && isset($form['identity']['type'])) { // node type settings form
    $type = $form['#node_type']->type;
    $form['workflow']['prepopulate_allowed'] = array(
      '#type' => 'checkbox',
      '#title' => 'Prepopulate form from URL?',
      '#default_value' => variable_get('prepopulate_allowed_' . $type, TRUE),
      '#description' => t('Allows fields to be prepopulated from the URL'),
    );
  } // endif on a node settings form
  
  $type = $form['type']['#value'];

  if (variable_get('prepopulate_allowed_' . $type, TRUE) && $_GET['edit']) {
    foreach (array_keys( (array) $_GET['edit']) as $getvar) {
      if (element_child($getvar) && !is_null($form[$getvar])) {
        _prepopulate_get_walk($form[$getvar], $_GET['edit'][$getvar]);
      }
    } // endforeach get variable
  } // endif any get vars
} // endfunction prepopulate_form_alter()

function _prepopulate_get_walk(&$form, &$getslice) {
  if (!is_array($getslice)) {
    $form['#default_value'] = $getslice;
  } 
  else {
    foreach (array_keys($getslice) as $getvar) {
      if (element_child($getvar) && is_array($form) && !is_null($form[$getvar])) {
        _prepopulate_get_walk($form[$getvar], $getslice[$getvar]);
      }
    } // endforeach walking through get
  } // endif getslice is not an array
} // endfunction _prepopulate_get_walk()

// vim: tw=300 nowrap syn=php