hook_menu title callback on wildcard

Question

I have two pages, the first page 'test' has links to test/%. On test/% I want to have different titles but some how this wildcard and the title callback aren't working properly.

/**
 * Implements hook_menu().
 */
function cjgimport_menu() {
  $items['test'] = array(
    'title' => t('Test title'),
    'title callback' => 'function_title_callback',
    'title arguments' => array(0),
    'type' => MENU_NORMAL_ITEM,
    'access arguments' => array('access content'),
    'page callback' => 'function_content_callback',
  );

  $items['test/%'] = array(
    'title' => t('Test title'),
    'title callback' => 'function_title_callback',
    'title arguments' => array(1),
    'type' => MENU_NORMAL_ITEM,
    'access arguments' => array('access content'),
    'page callback' => 'function_content_callback',
  );

  return $items;
);

/**
 * Custom callback function for title
 */
function function_title_callback($arg) {
  if($arg == 0) {
    $title = ucfirst(arg(0));
  } else {
    $title = ucfirst(arg(1));
  }
  return $title;
}

Can anyone tell me why the title doesn't work on the test/% pages?

Answer 1

You need to provide the wildcard as title arguments:

$items['test/%'] = array(
  'title' => t('Test title'),
  'title callback' => 'function_title_callback',
  'title arguments' => array(1),
  'type' => MENU_NORMAL_ITEM,
  'access arguments' => array('access content'),
  'page callback' => 'function_content_callback',
);

And obviously make sure that your function is actually called function_title_callback() (which you've listed in hook_menu()), and not cjgimport_title_callback(), which you have listed in the question.

You should also be using the $arg variable, not the arg() function in your callback...but I guess that might be the result of debugging.

Answer 2

Please remember to put the loader function in the same file where your menu function is in, it usually is the .module file. In my case, my loader function wouldnt fire when i put it in the .inc file.