function rules_condition_data_is_empty

Condition: Data value is empty.

Related topics

File

modules/data.eval.inc, line 433

Code

function rules_condition_data_is_empty($data) {
    // Note that some primitive variables might not be wrapped at all.
    if ($data instanceof EntityMetadataWrapper) {
        try {
            // We cannot use the dataAvailable() method from the wrapper because it
            // is protected, so we catch possible exceptions with the value() method.
            $value = $data->value();
            return empty($value);
        } catch (EntityMetadataWrapperException $e) {
            // An exception means that the wrapper is somehow broken and we treat
            // that as empty.
            return TRUE;
        }
    }
    return empty($data);
}