function user_relationships_ui_request_validate in User Relationships 7

Same name and namespace in other branches

1. 6 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'];
  $rtype = user_relationships_type_load($rtid);

  //check that a type has been chosen
  $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($current_relationships)) {
    form_set_error('rtid', user_relationships_get_message('too_many_relationships'));
    if (isset($_GET['ajax'])) {
      drupal_goto();
    }
    else {
      return;
    }
  }

  //check user is allowed to request this type
  if (!user_relationships_can_request($requester, $rtype)) {
    $rtype->requester = $requester;
    $rtype->requestee = $requestee;
    form_set_error('rtid', user_relationships_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_can_receive($requestee, $rtype)) {
    $rtype->requester = $requester;
    $rtype->requestee = $requestee;
    form_set_error('rtid', user_relationships_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 rtids 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] = $key;
        continue;
      }

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

  //check if there aren't any available (not yet used) types that can be established
  $select = db_select('user_relationship_types');
  $select
    ->addExpression('COUNT(*)', 'count');
  if ($test_relationships) {
    $select
      ->condition('rtid', $test_relationships, 'NOT IN');
  }
  if (!$select
    ->execute()
    ->fetchField()) {
    drupal_set_message(user_relationships_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_get_message($message_name, NULL, array(
      '!requester' => theme('username', array(
        'account' => $requester,
      )),
      '!requestee' => theme('username', array(
        'account' => $requestee,
      )),
      '%relationship_name' => $current_relationships[$rtid][0]->name,
      '%relationship_plural_name' => $current_relationships[$rtid][0]->plural_name,
    )));
  }
}