function user_relationships_ui_request_validate in User Relationships 6

Same name and namespace in other branches

1. 7 user_relationships_ui/user_relationships_ui.actions.inc \user_relationships_ui_request_validate()

Validate relationship request.

File

user_relationships_ui/user_relationships_ui.actions.inc, line 12

User Relationships Actions

Code

function user_relationships_ui_request_validate($form, &$form_state) {
  $requester = user_load($form_state['values']['requester']);
  $requestee = user_load($form_state['values']['requestee']);
  $rtid = $form_state['values']['rtid'];
  if (user_access('can have relationships', $requestee)) {

    //check that a type has been chosen
    if (!$rtid || !($rtype = user_relationships_type_load($rtid))) {
      form_set_error('rtid', user_relationships_ui_get_message('relationship_type_not_set'));

      //need to handle requests from ajax forms separately
      if (isset($_GET['ajax'])) {
        drupal_goto();
      }
      else {
        return;
      }
    }
    $current_relationships = user_relationships_load(array(
      'between' => array(
        $requester->uid,
        $requestee->uid,
      ),
    ), array(
      'sort' => 'rtid',
    ));

    //check for multiple relationships
    if (!variable_get('user_relationships_allow_multiple', TRUE) && count($current_relationships)) {
      form_set_error('rtid', user_relationships_ui_get_message('too_many_relationships'));
      if (isset($_GET['ajax'])) {
        drupal_goto();
      }
      else {
        return;
      }
    }

    //check user is allowed to request this type
    if (!user_relationships_api_can_request($requester, $rtype)) {
      $rtype->requester = $requester;
      $rtype->requestee = $requestee;
      form_set_error('rtid', user_relationships_ui_get_message('relationship_type_not_allowed', $rtype));
      if (isset($_GET['ajax'])) {
        drupal_goto();
      }
      else {
        return;
      }
    }

    //check user is allowed to receive this type
    if (!user_relationships_api_can_receive($requestee, $rtype)) {
      $rtype->requester = $requester;
      $rtype->requestee = $requestee;
      form_set_error('rtid', user_relationships_ui_get_message('relationship_type_not_allowed', $rtype));
      if (isset($_GET['ajax'])) {
        drupal_goto();
      }
      else {
        return;
      }
    }

    //check if this request contradicts existing relationships or requests of this type

    //gather rtid's of relationships that have already been requested from requester to requestee
    $test_relationships = array();
    foreach ($current_relationships as $key => $value) {
      foreach ($value as $val_rel) {

        //existing two way relationships count no matter the direction
        if (!$val_rel->is_oneway) {
          $test_relationships[$key] = $value;
          continue;
        }

        //if it's one way, but not reciprocal, then it counts no matter the direction
        if (!$val_rel->is_reciprocal) {
          $test_relationships[$key] = $value;
          continue;
        }

        //remaining case is a reciprocal relationship - it counts unless the request is in the opposite direction
        if ($requester->uid == $val_rel->requester_id) {
          $test_relationships[$key] = $value;
        }
      }
    }

    //check if there aren't any available (not yet used) types that can be established
    if (!db_result(db_query('SELECT COUNT(*) FROM {user_relationship_types}' . ($test_relationships ? ' WHERE rtid NOT IN (' . db_placeholders($test_relationships) . ')' : ''), array_keys($test_relationships)))) {
      drupal_set_message(user_relationships_ui_get_message('too_many_relationships'), 'error');
      drupal_goto();
    }
    elseif (isset($test_relationships[$rtid])) {
      $message_name = $test_relationships[$rtid]->approved ? 'existing_relationship' : 'existing_request';
      form_set_error('rtid', user_relationships_ui_get_message($message_name, NULL, array(
        '!requester' => theme('username', $requester),
        '!requestee' => theme('username', $requestee),
        '%relationship_name' => $current_relationships[$rtid][0]->name,
        '%relationship_plural_name' => $current_relationships[$rtid][0]->plural_name,
      )));
    }
  }
  else {
    drupal_set_message(user_relationships_ui_get_message('not_accepting_requests'));
    drupal_goto();
  }
}