Ruby on Rails

> On Feb 16, 2017, at 9:27 AM, Joe Guerra <jgu...@jginfosys.com> wrote:
>
> ok, still confused....  
> I've defined my parms like this...
>
> def cart_params
>   # params.fetch(:cart, {})
>   params.require(:cart).permit(:user_id,  :product_id )
>
>
> end
>  
>
> Have this in my controller.
>
> def add_to_cart
>
>   product_id = params['id']
>   user_id = session['user_id']
>   @cart = Cart.new(user_id, product_id)
>
> end
>

Try this:

product_id = cart_params[:product_id]
user_id = session['user_id']
@cart = Cart.new(user_id, product_id)

Not clear what params[:id] would be set to in your example, but you went out of your way to whitelist cart[product_id], so that's what I think you should use.

Walter

>
> Not sure what to put in the show page, to pass these values to the controller.  
>
> I've got a few rails books, and not one of them cover this.  
>
>
>
> On Thursday, February 16, 2017 at 12:18:38 AM UTC-5, Scott Jacobsen wrote:
> Controller action methods do not take parameters. You get the parameters from the `params` hash. Also, as was mentioned, do not send user_id as a param. It is a security error, and you don't need to because you can access the session in the controller:
>
> def add_to_cart
>   product_id = params["product_id"]
>   user_id = session["user_id"]
>   @cart = Cart.new(user_id, product_id)
>   ...
> end
>
> On Wednesday, February 15, 2017 at 5:11:02 PM UTC-7, Joe Guerra wrote:
> I am pretty close to figuring this out...
>
> I've got this in my product show page....I'm trying to pass user_id & product_id to my products controller, add_to_cart method...
>
>
> <%= button_to  'Add to Cart', {:controller => "products", :action => "add_to_cart", :user_id=> session[:user_id], :product_id => @id   } , :method=>:post  %>
>
> on the controller...
>
> def add_to_cart(user_id, product_id)
>
>
>     @cart = Cart.new(user_id, product_id )
> #
>
> end
>
> I get the error,
> "wrong number of arguments (given 0, expected 2)"
>
>
>
>
>
> Any suggestions?
>
> Thanks,
>
> Joe
>
>
>
>
>
>
>
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