Add [node-menu-parent-alias] token

Thanks for the idea and patch, xjm. I think this is a reasonable token to provide but there are a few corrections before it can be committed.

First, the "ADDED BY" and "END ADDITION" pieces should be removed.

Also, this is a fairly common thing to provide, but is generally called "*alias" (see term and termalias or bookpath and bookpathalias). I think this should be called "menupathalias".

Finally, if possible I'd prefer to add this feature to 6.x first or at least have patches for both 5.x and 6.x

Thanks again.

So, is this going to be added to 6.x?

Here is a quick attempt at providing a ['parent_path_alias'] token. This requires the Menu Node API module, which is very useful. Since it depends on a module that token does not, I though it best not to post it in patch form.

/**
* Implementation of hook_token_values().
*
*/
function token_parent_path_alias_token_values($type, $object = NULL) {
  $values = array();
  if ($type == 'node') {
    $node = $object;

	if (!empty($node->menu['plid'])) { // Make sure menu item has a parent
        
		$parent_mlid = $node->menu['plid']; // Get the mlid of the parent
			
		$parent_object = menu_node_get_node($parent_mlid);  // Return a node object for the closest parent
	
		$parent_path = $parent_object->path; // Pull the path out of the parent node object
	
		$values['parent_path_alias'] = $parent_path; // Set token
    
		if ($parent_path == 'node/'.$parent_object->nid) { // If there is not an alias, return nothing
			$values['parent_path_alias'] = '';
		}
    }

    else {
    	$values['parent_path_alias'] = '';
   	}

  	return $values;
	}
}

/**
* Implementation of hook_token_list().
*/
function token_parent_path_alias_token_list($type = 'all') {
  if ($type == 'node' || $type == 'all') {
    $tokens['node']['parent_path_alias'] = t("The path alias of the closest parent menu item. CAUTION - Be careful with bulk-updating content using this token."); 
    return $tokens;
  }
}

I think we just need [node:menu] and [node:menu:parent:url] in D7 where this is much better possible.

This is now available in token.module for D7 as [node:menu-link:parent:url]

The token name is not evident that this is using the parent. I would suggest [node-menu-parent-alias].

Will need to be re-rolled for changes to menu link token handling.

Committed #18 to CVS.
http://drupal.org/cvs?commit=463902