Question

Associations:

location  has_many :comments
comment  belongs_to :location

For some reason, this GET:

/locations/5/comments.json 

is acting like this GET:

/comments.json

Started GET "/locations/5/comments.json" for 127.0.0.1 at 2012-04-10 21:18:00 -0700
  Processing by CommentsController#index as JSON
  Parameters: {"location_id"=>"5"}
  Comment Load (0.1ms)  SELECT "comments".* FROM "comments" 
Completed 200 OK in 21ms (Views: 1.0ms | ActiveRecord: 0.7ms)

Note the SQL query: SELECT “comments”.* FROM “comments”

The route is set up like this:

  resources :locations do
    resources :comments
  end

Rake routes confirms the route:

location_comments GET    /locations/:location_id/comments(.:format)          {:action=>"index", :controller=>"comments"}

Here is the index action:

 def index
    @comments = Comment.all
    respond_to do |format|
      format.json { render json: @comments }
    end
  end

Is this the right action? It is consistent with the result, but I am not sure what else should be here. I’ve never had a problem with nested resources before, so I’ve never looked into the details.

Answer 1

try this:

def index
  @location = Location.find(params[:location_id])
  @comments = @location.comments
  respond_to do |format|
    format.json { render json: @comments }
  end
end