function _options_form_to_storage

Transforms submitted form values into field storage format.

File

modules/field/modules/options/options.module, line 311

Code

function _options_form_to_storage($element) {
    $values = array_values((array) $element['#value']);
    $properties = $element['#properties'];
    // On/off checkbox: transform '0 / 1' into the 'on / off' values.
    if ($element['#type'] == 'checkbox') {
        $values = array(
            $values[0] ? $element['#on_value'] : $element['#off_value'],
        );
    }
    // Filter out the 'none' option. Use a strict comparison, because
    // 0 == 'any string'.
    if ($properties['empty_option']) {
        $index = array_search('_none', $values, TRUE);
        if ($index !== FALSE) {
            unset($values[$index]);
        }
    }
    // Make sure we populate at least an empty value.
    if (empty($values)) {
        $values = array(
            NULL,
        );
    }
    $result = options_array_transpose(array(
        $element['#value_key'] => $values,
    ));
    return $result;
}