which hook is effective for setting custom breadcrumbs?

Question

I have a theme which sets breadcrumbs like this:

function mytheme_process_node(&$variables) {
    (....)
    drupal_set_breadcrumb($my_breadcrumbs_array);
}

This gets overwritten later by something else. I need a specific taxonomy value of the displayed node to set the breadcrumb, that's why I am using this hook. How to do it effectively? Perhaps there is a hook which is performed later and still has access to the node object?

Answer 1

I normally stick that logic in hook_preprocess_page(), it runs late enough in the page build to not be overwritten by anything else.

You can still get access to the node object by using the menu_get_object() function:

function MYTHEME_preprocess_page(&$vars) {
  if ($node = menu_get_object()) {
    // We're on a node page...
    drupal_set_breadcrumb($my_breadcrumbs_array);
  }
}

Answer 2

There is also hook_menu_breadcrumb_alter()

Besides, you can use one of the plenty of breadcrumb-customizing modules and might get what you want without custom code.