function mvf_field_instance_settings_form in Measured Value Field 7

Implements hook_field_instance_settings_form().

File

./mvf.module, line 518

Define a field type of measured value.

Code

function mvf_field_instance_settings_form($field, $instance) {
  $form = array();
  foreach ($field['settings']['meta_info'] as $subfield => $meta_info) {
    $mocked_field = mvf_field_mockup($field, $subfield);
    $mocked_instance = mvf_instance_mockup($field, $instance, $subfield);

    // Checking if the module that defines a subfield wants to define any
    // instance settings.
    $extra = module_invoke($meta_info['module'], 'field_instance_settings_form', $mocked_field, $mocked_instance);
    if (is_array($extra) && !empty($extra)) {

      // Doing any customizations in the output of a sub field hook.
      switch ($subfield) {
        case 'unit':

          // We have to add our custom validate function that will "repair"
          // what brakes entity reference native validate function.
          $extra['#element_validate'][] = 'mvf_entityreference_field_instance_settings_validate';

          // We have to "save" original field definition array for
          // our submit validation function.
          $extra['#mvf'] = array(
            'field' => $field,
          );
          $extra['#pre_render'][] = 'mvf_entityreference_field_instance_settings_pre_render';
          break;
        case 'value':

          // Number module native 'min' and 'max' don't make sense in MVF,
          // because min and max should be defined considering unit measure, and
          // not only numeric value.
          $extra['min']['#access'] = FALSE;
          $extra['max']['#access'] = FALSE;
          break;
      }
      $form[$subfield] = array(
        '#type' => 'fieldset',
        '#title' => t('@label Instance Settings', array(
          '@label' => $meta_info['label'],
        )),
        '#collapsible' => TRUE,
      ) + $extra;
    }
  }

  // Also defining some our proper MVF instance settings.
  $form['mvf'] = array(
    '#tree' => TRUE,
  );
  $form['mvf']['min'] = array(
    '#type' => 'mvf_widget',
    '#title' => t('Min'),
    '#description' => t('The minimum value that should be allowed in this field. Leave blank for no minimum.'),
    '#field' => $field,
    '#instance' => $instance,
    '#entity_type' => $instance['entity_type'],
    '#default_value' => $instance['settings']['mvf']['min'],
  );
  $form['mvf']['max'] = array(
    '#type' => 'mvf_widget',
    '#title' => t('Max'),
    '#description' => t('The maximum value that should be allowed in this field. Leave blank for no maximum.'),
    '#field' => $field,
    '#instance' => $instance,
    '#entity_type' => $instance['entity_type'],
    '#default_value' => $instance['settings']['mvf']['max'],
  );
  $form['mvf']['unit_suggesters_settings'] = array(
    '#type' => 'mvf_unit_suggester',
    '#title' => t('Unit suggestion'),
    '#field' => $field,
    '#instance' => $instance,
  );
  return $form;
}