link_to update (without form)

ruby-on-rails routes link-to put
Joe picture Joe · Jan 20, 2011 · Viewed 20.2k times · Source

I want a link to update a resource, without using an HTML form.

Routes:

resources :users do
  resources :friends
end

Rake routes:

 user_friend GET /users/:user_id/friends/:id(.:format){:action=>"show", :controller=>"friends"}
             PUT /users/:user_id/friends/:id(.:format){:action=>"update", :controller=>"friends"}

I want to use the put to update a friend by a simple link, something like this:

<%= link_to "Add as friend", user_friend_path(current_user, :method=>'put') %>

But when I click the link, it tries to go into the show action.

What is the right way to do this?

Answer

Jeppe Liisberg picture Jeppe Liisberg · Jan 20, 2011 
link_to "Add as friend", user_friend_path(current_user, @friend), :method=> :put

Will insert a link with attribute 'data-method' set to 'put', which will in turn be picked up by the rails javascript and turned into a form behind the scenes... I guess that's what you want.

You should consider using :post, since you are creating a new link between the two users, not updating it, it seems.

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