Ruby on Rails

On Sun, Mar 5, 2017 at 10:23 AM, Joe Guerra <JGuerra@jginfosys.com> wrote:

> def calc_remaining
> @taken = Cart.where('product_id' => @product).count
>
> @remaining = @product.qty - @taken
> end

> but when I call it from my add to cart method, @product.qty is undefined
> method `qty' for nil:NilClass.

And that tells you that @product is nil at that point. Where is the code
that sets that variable?

--
Hassan Schroeder ------------------------ hassan.schroeder@gmail.com
twitter: @hassan
Consulting Availability : Silicon Valley or remote

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