Rails - Dec 2008 - render :json and associations

Is there any way to use the to_json includes when using
"render :json"?

I''ve got this:

format.json { render :json => { :order => @orders } }

But I''d also like to include the address (order.address) association.
The "to_json" method has all these options, but I don''t see
how I can
use that with render :json.  If I tack on the to_json to @orders the
render :json escapes the whole thing.  I''m using Ext JS on the client
side.

Thanks!

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On Dec 20, 2:55 pm, "pat.osterday"
<pat.oster...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> Is there any way to use the to_json includes when using
> "render :json"?
>
> I''ve got this:
>
> format.json { render :json => { :order => @orders } }
>
render :json => @orders.to_json(...)

Fred
> But I''d also like to include the address (order.address)
association.
> The "to_json" method has all these options, but I don''t
see how I can
> use that with render :json.  If I tack on the to_json to @orders the
> render :json escapes the whole thing.  I''m using Ext JS on the
client
> side.
>
> Thanks!
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use eager loading on your @orders with :include option or use :select to 
add attributes from address if you only need limited data from address 
and performance is a concern.

Regards,

rp8
======================http://lun.competo.com/

Frederick Cheung wrote:
> On Dec 20, 2:55�pm, "pat.osterday"
<pat.oster...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>> Is there any way to use the to_json includes when using
>> "render :json"?
>>
>> I''ve got this:
>>
>> format.json { render :json => { :order => @orders } }
>>
> 
> render :json => @orders.to_json(...)
> 
> Fred
-- 
Posted via http://www.ruby-forum.com/.

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This works, but what if I want to add other json object that aren''t in
orders?  Ext JS needs a "count" param for it''s client side
pagination.  So I originally had this:

format.json { render :json => { :order => @orders, :count =>
@orders.size } }

I couldn''t figure out how to use to_json in this situation.

On Dec 20, 10:19 am, Frederick Cheung
<frederick.che...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
>
> render :json => @orders.to_json(...)
>
> Fred
>
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I do have includes on the finder, but the associates are not sent with
the json output.

For now I wound up just building my own hash and returning that.

On Dec 20, 1:55 pm, rp8 -_-
<rails-mailing-l...-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:
> use eager loading on your @orders with :include option or use :select to
> add attributes from address if you only need limited data from address
> and performance is a concern.
>
> Regards,
>
> rp8
> =======================http://lun.competo.com/
>
> Frederick Cheung wrote:
> > On Dec 20, 2:55 pm, "pat.osterday"
<pat.oster...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> >> Is there any way to use theto_jsonincludes when using
> >> "render :json"?
>
> >> I''ve got this:
>
> >> format.json { render :json => { :order => @orders } }
>
> > render :json => @orders.to_json(...)
>
> > Fred
>
> --
> Posted viahttp://www.ruby-forum.com/.
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On Dec 22, 2:31 pm, "pbo...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org"
<pbo...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
wrote:
> This works, but what if I want to add other json object that
aren''t in
> orders?  Ext JS needs a "count" param for it''s client
side
> pagination.  So I originally had this:
>
> format.json { render :json => { :order => @orders, :count =>
> @orders.size } }
format.json { render :json => { :order => @orders, :count =>
@orders.size }.to_json }

Fred

>
> I couldn''t figure out how to use to_json in this situation.
>
> On Dec 20, 10:19 am, Frederick Cheung
<frederick.che...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> wrote:
>
>
>
> > render :json => @orders.to_json(...)
>
> > Fred
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