field_attach_delete_revision

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7

field_attach_delete_revision($obj_type, $object)

Delete field data for a single revision of an existing object. The passed object must have a revision id attribute.

Parameters

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

$object The object with fields to save.

Related topics

Field Attach API

Operate on Field API data attached to Drupal objects.

Code

modules/field/field.attach.inc, line 954

<?php
function field_attach_delete_revision($obj_type, $object) {
  _field_invoke('delete_revision', $obj_type, $object);

  list($id, $vid, $bundle, $cacheable) = entity_extract_ids($obj_type, $object);

  // Collect the storage backends used by the fields in the objects.
  $storages = array();
  foreach (field_info_instances($obj_type, $bundle) as $instance) {
    $field = field_info_field_by_id($instance['field_id']);
    $field_id = $field['id'];
    $storages[$field['storage']['type']][$field_id] = $field_id;
  }

  // Field storage backends delete their data.
  foreach ($storages as $storage => $fields) {
    $storage_info = field_info_storage_types($storage);
    module_invoke($storage_info['module'], 'field_storage_delete_revision', $obj_type, $object, $fields);
  }

  // Let other modules act on deleting the revision.
  module_invoke_all('field_attach_delete_revision', $obj_type, $object);
}
?>

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