DrupalAPI.de

1. drupal
   1. drupal7

Invoke a field hook.

Übergabeparameter

$op Possible operations include:

• form
• validate
• presave
• insert
• update
• delete
• delete revision
• sanitize
• view
• preprocess
• prepare translation

$obj_type The type of $object; e.g. 'node' or 'user'.

$object The fully formed $obj_type object.

$a

• The $form in the 'form' operation.
• The value of $teaser in the 'view' operation.
• Otherwise NULL.

$b

• The $form_state in the 'submit' operation.
• Otherwise NULL.

$default

• TRUE: use the default field implementation of the field hook.
• FALSE: use the field module's implementation of the field hook.

Verwandte Themen

Field Attach API

Operate on Field API data attached to Drupal objects.

Code

modules/field/field.attach.inc, line 158

<?php
function _field_invoke($op, $obj_type, &$object, &$a = NULL, &$b = NULL, $default = FALSE) {
  list(, , $bundle) = field_attach_extract_ids($obj_type, $object);
  $instances = field_info_instances($bundle);

  $return = array();
  foreach ($instances as $instance) {
    $field_name = $instance['field_name'];
    $field = field_info_field($field_name);
    $items = isset($object->$field_name) ? $object->$field_name : array();

    $function = $default ? 'field_default_' . $op : $field['module'] . '_field_' . $op;
    if (drupal_function_exists($function)) {
      $result = $function($obj_type, $object, $field, $instance, $items, $a, $b);
      if (is_array($result)) {
        $return = array_merge($return, $result);
      }
      elseif (isset($result)) {
        $return[] = $result;
      }
    }
    // Populate field values back in the object, but avoid replacing missing
    // fields with an empty array (those are not equivalent on update).
    if ($items !== array() || property_exists($object, $field_name)) {
      $object->$field_name = $items;
    }
  }

  return $return;
}
?>