Routes.rb

Rails
1

Hi,

I am going through a tutorial in a rails book. I have Something off with
routes:
I have RESTful resource in routes.rb:

“…
map.resources :users, :member => { :enable => :put } do |users|
users.resources :roles
end
…”

and in a html.erb partial I have:
“…
<%= link_to ‘assign role’,
role_url(:id => role.id, :user_id => @user.id),
:method => :put %>
…”
I get:
NoMethodError in Roles#index

Showing roles/_role.html.erb where line #9 raised:

undefined method `role_url’ for #ActionView::Base:0x3637bdc

I might be using newer version of rails than the book. The role_url is
not an explicitly defined route in this tutorial routes.rb file, I don’t
know enough about RoR, but I am guessing the role_url should be
automatically available, so I would appreciate any help with this
because my RoR learning is halted here.
Cheers,
Mark

2

If you nest your resources as you do, then
the url will need all parts of it like:

user_role_path(@user, role)

As parameters it takes the resource ids as default,
so you don’t need the :id and the :user_id here

3

and don’t forget that you can use rake routes to see all your
available routes at any given time, and their corresponding
controllers and actions.