嵌套资源link_to

Question

sI'm having trouble linking to something like example.com/r/leagueoflegends/posts/1 . In my link i have

<%= link_to posts.title, category_post_path %>

but end up getting "No route matches {:action=>"show", :controller=>"posts"} missing required keys: [:category_id, :id]". I've tried other ways but still cant get it to work right.

My routes look like this

resources :categories, path: 'r', except: [:index] do
 resources :posts
end

Home controller

def index
 @posts = Post.all
end

Answer 1

You should indicate to which category you're linking (not only post), so you should have:

<%= link_to post.title, [@category, post] %>

of course, you should have @category variable set, which should be in before filter in your controller:

before_filter :set_category
# ...
private

def set_category
  @category = Category.find(params[:category_id])
end

and in your index action:

def index
  @posts = @category.posts
end