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function field_has_data in Drupal 7

Determine whether a field has any data.

Parameters

$field: A field structure.

Return value

TRUE if the field has data for any entity; FALSE otherwise.

Related topics

Field API: Attach custom data fields to Drupal entities.

4 calls to field_has_data()

FieldAttachStorageTestCase::testFieldHasData in modules/field/tests/field.test: Test field_has_data().
field_ui_field_edit_form in modules/field_ui/field_ui.admin.inc: Form constructor for the field instance settings form.
field_ui_field_settings_form in modules/field_ui/field_ui.admin.inc: Form constructor for the field settings edit page.
field_update_field in modules/field/field.crud.inc: Updates a field.

File

modules/field/field.module, line 953: Attach custom data fields to Drupal entities.

Code

function field_has_data($field) {
  $query = new EntityFieldQuery();
  $query = $query
    ->fieldCondition($field)
    ->range(0, 1)
    ->count()
    ->addTag('DANGEROUS_ACCESS_CHECK_OPT_OUT');
  return (bool) $query
    ->execute() || (bool) $query
    ->age(FIELD_LOAD_REVISION)
    ->execute();
}