function linked_field_update_7004 in Linked Field 7

Add some settings to fields if they don't exist already.

File

./linked_field.install, line 248

Contains install and update functions for Linked Field.

Code

function linked_field_update_7004(&$sandbox) {

  // Getting all fields.
  $field_info = field_info_fields();
  $fields = array();

  // We iterate all fields and collect them
  // with their entity type and and all bundles.
  foreach ($field_info as $field) {
    foreach ($field['bundles'] as $entity_type => $bundles) {
      foreach ($bundles as $bundle) {
        $fields[] = array(
          'field_name' => $field['field_name'],
          'entity_type' => $entity_type,
          'bundle' => $bundle,
        );
      }
    }
  }

  // We initialize the batch process.
  if (!isset($sandbox['progress'])) {
    $sandbox['progress'] = 0;
    $sandbox['current_field'] = 0;
    $sandbox['max'] = count($fields);
  }

  // Getting current setting.
  $field = $fields[$sandbox['current_field']];

  // Getting field instance and modify the settings.
  $instance = db_select('field_config_instance', 'fci')
    ->fields('fci', array(
    'data',
  ))
    ->condition('field_name', $field['field_name'])
    ->condition('entity_type', $field['entity_type'])
    ->condition('bundle', $field['bundle'])
    ->execute()
    ->fetchField();
  $instance = unserialize($instance);
  foreach ($instance['display'] as &$display) {
    $settings =& $display['settings'];

    // Iterate all settings from 'advanced' array.
    if (isset($settings['linked_field'])) {
      foreach (array(
        'title',
        'target',
        'class',
        'rel',
        'text',
      ) as $setting) {
        if (!isset($settings['linked_field']['advanced'][$setting])) {
          $settings['linked_field']['advanced'][$setting] = '';
        }
      }
    }
  }
  $instance = serialize($instance);

  // Finally we update the current field instance.
  db_update('field_config_instance')
    ->fields(array(
    'data' => $instance,
  ))
    ->condition('field_name', $field['field_name'])
    ->condition('entity_type', $field['entity_type'])
    ->condition('bundle', $field['bundle'])
    ->execute();

  // Prepeare the values for the next step.
  $sandbox['progress']++;
  $sandbox['current_field']++;

  // Update process is finished when all settings have been ran.
  $sandbox['#finished'] = $sandbox['progress'] / $sandbox['max'];

  // Clear caches if all fields are processed.
  if (intval($sandbox['#finished'])) {
    field_cache_clear();
  }
}