it is set up in the private section
def set_product
@product = Product.find(params[:id])
end
and I can see it in my show method...
*How do I get to see it in my *
def calc_remaining
@taken = Cart.where('product_id' => @product).count
@remaining = @product.qty - @taken
end
method?
On Sunday, March 5, 2017 at 1:57:39 PM UTC-5, James Jelinek wrote:
>
> You’re getting no method error “qty” because @product is not set in your
> controller action. So you’re essentially trying to subtract @taken from
> something that is NIL.
>
> You need to see @product as an instance variable in your specific
> controller method and this should work out for you.
>
> -James
>
> On Mar 5, 2017, at 12:23 PM, Joe Guerra <[email protected]
> <javascript:>> wrote:
>
> ok, here's my method...
>
> 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.
>
>
>
>
> On Thursday, March 2, 2017 at 11:07:06 AM UTC-5, Joe Guerra wrote:
>>
>> In my show method for my products controller I've got a variable that
>> track qty ( @remaining ).
>>
>> Can I access this variable from another method within the same controller?
>>
>> Thanks,
>> Joe
>>
>
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