farmOS/farm_area.module

<?php
/**
 * @file
 * Code for the Farm Area feature.
 */

include_once 'farm_area.features.inc';

/**
 * Implements hook_menu_local_tasks_alter().
 */
function farm_area_menu_local_tasks_alter(&$data, $router_item, $root_path) {

  // Define actions.
  $actions = array(
    'area' => array(
      'title' => t('Add an area'),
      'href' => t('admin/structure/taxonomy/farm_areas/add'),
    ),
  );

  // Define actions for various paths.
  $path_actions = array(
    'admin/farm' => $actions['area'],
    'admin/farm/areas' => $actions['area'],
  );

  // Add actions depending on the root path.
  if (array_key_exists($root_path, $path_actions)) {
    $output = array(
      '#theme' => 'menu_local_action',
      '#link' => array(
        'title' => $path_actions[$root_path]['title'],
        'href' => $path_actions[$root_path]['href'],
        'localized_options' => array(
          'query' => array(
            'destination' => $root_path,
          ),
        ),
      ),
    );

    // Add the action output.
    $data['actions']['output'][] = $output;
  }
}


/**
 * Generate area links.
 *
 * @param $id
 *   The area id.
 *
 * @return string
 *   Returns a string of links.
 */
function farm_area_get_links($id) {

  // Call out to modules that want to provide links.
  $links = module_invoke_all('farm_area_links', check_plain($id));

  // Return the links.
  return $links;
}