Ruby on Rails

On 24 March 2013 12:10, Ryo Saeba <lists@ruby-forum.com> wrote:
> I'm receiving the
>
> "Called id for nil, which would mistakenly be 4 -- if you really wanted
> the id of nil, use object_id"
>
> Error Message, when my controller tries to get an object's id.
>
> In my page users can register, login, create new game entries, rate them
> and leave a review.
>
> the create method in the ratings controller is the exact same as in the
> review controller. (with different names of course)
>
> def create
> @game = Game.find_by_id(params[:game_id])
> @rating = Rating.new(params[:rating])
> @rating.game_id = @game.id
> @rating.user_id = current_user.id
> end
>
> Giving a rating works perfectly, but assigning the game.id to
> @review.game_id causes me the error...

The error is saying that @game is nil. Look in development.log when
the method is called to see what params[:game_id] is set to. If you
still can't see it then put some print statements in the method to
print the value of params[:game_id] and to show whether @game is nil.

Also have a look at the Rails Guide on debugging which will show you
techniques that you can use to debug your code.

Colin

>
> but my relations are set, what can possibly be wrong? why is the game
> object not nil when trying to create a rating, but nil when I want to
> create a review?
>
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