Thanks Matt.
I see a lot of named_scope question.
I have just started with rails and have created a few paages manually
without scaffolding, but producing the same results.
That is where i stand with rails.
I am not clear on the named_scope.
Sorry for this silly question.
What is this named_scope. You have provided a very good example, but
still..
I'm sure all gurus are aware of it, i see it recommended by several ppl.
thanks in advance.
radha
Matt Jones wrote:
> On Jun 28, 10:36�pm, RailsFan Radha <li...@ruby-forum.com> wrote:
>> Active/inactive are set via status column in category table.
>> where status='A'
>>
>> since the url shows up in the url bar, the user can simply type in a
>> different category_id and view the record, even if status = 'I'
>> but, i don't want the user to modify the url and view the category where
>> status <> 'A'
>> In short, the users get to view only status='A'
>>
>
> If you're doing this a lot, you should add it as a scope to the
> Category model:
>
> class Category < ActiveRecord::Base
> named_scope :active, :conditions => { :status => 'A' }
> end
>
> Then your controller action could be:
>
> def show
> @category = Category.active.find(params[:category_id])
> end
>
> which will throw a RecordNotFound if the supplied ID isn't also
> active.
>
> BTW, the use of :category_id in the above sample is odd - if you're in
> CategoriesController and have the standard routing, (/categories/:id)
> the parameter will be named :id. :category_id would be used if, for
> instance, you had a nested route to a Post model:
>
> /categories/:category_id/posts
> /categories/:category_id/posts/new
>
> etc.
>
> --Matt Jones
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