hook_field_is_empty

Define what constitutes an empty item for a field type.

Parameters

$item: An item that may or may not be empty.

$field: The field to which $item belongs.

Return value

TRUE if $field's type considers $item not to contain any data; FALSE otherwise.

Related topics

Hooks

Allow modules to interact with the Drupal core.

Field Types API

Define field types.

7 functions implement hook_field_is_empty()

File

modules/field/field.api.php, line 671

Code

function hook_field_is_empty($item, $field) {
  if (empty($item['value']) && (string) $item['value'] !== '0') {
    return TRUE;
  }
  return FALSE;
}