function field_example_3text_validate

Validate the individual fields and then convert to RGB string.

Related topics

File

field_example/field_example.module, line 320

Code

function field_example_3text_validate($element, &$form_state) {
    // @todo: Isn't there a better way to find out which element?
    $delta = $element['#delta'];
    $field = $form_state['field'][$element['#field_name']][$element['#language']]['field'];
    $field_name = $field['field_name'];
    if (isset($form_state['values'][$field_name][$element['#language']][$delta]['rgb'])) {
        $values = $form_state['values'][$field_name][$element['#language']][$delta]['rgb'];
        foreach (array(
            'r',
            'g',
            'b',
        ) as $colorfield) {
            $colorfield_value = hexdec($values[$colorfield]);
            // If they left any empty, we'll set the value empty and quit.
            if (strlen($values[$colorfield]) == 0) {
                form_set_value($element, '', $form_state);
                return;
            }
            // If they gave us anything that's not hex, reject it.
            if (strlen($values[$colorfield]) != 2 || $colorfield_value < 0 || $colorfield_value > 255) {
                form_error($element[$colorfield], t("Saturation value must be a 2-digit hexadecimal value between 00 and ff."));
            }
        }
        $value = sprintf('#%02s%02s%02s', $values['r'], $values['g'], $values['b']);
        form_set_value($element, $value, $form_state);
    }
}