function field_purge_data

Purges the field data for a single field on a single pseudo-entity.

This is basically the same as field_attach_delete() except it only applies to a single field. The entity itself is not being deleted, and it is quite possible that other field data will remain attached to it.

Parameters

$entity_type: The type of $entity; e.g. 'node' or 'user'.

$entity: The pseudo-entity whose field data is being purged.

$field: The (possibly deleted) field whose data is being purged.

$instance: The deleted field instance whose data is being purged.

Related topics

File

modules/field/field.crud.inc, line 939

Code

function field_purge_data($entity_type, $entity, $field, $instance) {
    // Each field type's hook_field_delete() only expects to operate on a single
    // field at a time, so we can use it as-is for purging.
    $options = array(
        'field_id' => $instance['field_id'],
        'deleted' => TRUE,
    );
    _field_invoke('delete', $entity_type, $entity, $dummy, $dummy, $options);
    // Tell the field storage system to purge the data.
    module_invoke($field['storage']['module'], 'field_storage_purge', $entity_type, $entity, $field, $instance);
    // Let other modules act on purging the data.
    foreach (module_implements('field_attach_purge') as $module) {
        $function = $module . '_field_attach_purge';
        $function($entity_type, $entity, $field, $instance);
    }
}