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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