A DRY solution of JQuery UI Autocomplete for more than one controller?

I have two controllers, each has a开发者_JAVA技巧n autocomplete textbox to search by last name. autocomplete.json.erb is stored in its corresponding view.

This following autocomplete code snippet would work nice for both controllers

  $( ".auto_complete" ).autocomplete({        
        minLength: 2,
        source: 'autocomplete.json'
    });

since these following requests will be generated:

http://localhost:3000/users/autocomplete.json?term=ab
http://localhost:3000/members/autocomplete.json?term=ab

however, if I use REST path, there is no trailing '/' at the end of URL:

members_path: http://localhost:3000/users
users_path: http://localhost:3000/members

So I have to do this:

<%= link_to "Users", users_path+'/' %>

without the '/' at the end, jquery-ui would invoke the following instead:

http://localhost:3000/autocomplete.json?term=ab

This does not seem to me as a clean solution. Another way is to make a separate auto complete code and css class for each controller so that the source attribute can be assigned to a different controller, e.g:

source: '/users/autocomplete.json'
source: '/members/autocomplete.json'

Is there a DRY solution to this problem?

Thanks.

You can ask the current url and use it as a prefix

$( ".auto_complete" ).autocomplete({        
    minLength: 2,
    source: window.location.href + '/autocomplete.json'
});