On Sun, Mar 5, 2017 at 10:23 AM, Joe Guerra <[email protected]> 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 ------------------------ [email protected]
twitter: @hassan
Consulting Availability : Silicon Valley or remote

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