i wanna display listings for that current category and all it's child 
categories (if any) and in the sidebar i wanna display the child categories

On Wednesday, November 25, 2015 at 8:39:05 AM UTC-5, Colin Law wrote:
>
> On 25 November 2015 at 12:31, fugee ohu <fuge...@gmail.com <javascript:>> 
> wrote: 
> > i'm trying to create an sql select from listings like this 
> > `@listings=Listing.where("category_id in [1, 2, etc.])` 
> > i'm using awesome_nested_set and it has a "children" method helper for 
> the 
> > Category model that returns all the children categories in an array I 
> was 
> > thinking i have to step through the array to build a string to insert 
> into 
> > my sql select statement, but i don't wanna re-invent the wheel Since 
> this is 
> > so common maybe there's a method already written for this? 
>
> As I said in a previous post, if you are explicitly using model.id you 
> are probably not doing things the best way.  Please provide details of 
> why you need to do this.  There is almost certainly a better way. 
>
> Colin 
>

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