On Wed, Jun 16, 2010 at 1:17 PM, Alex <alexle...@googlemail.com> wrote:
> Hi,
>
> Please can anyone help with an app architecture problem I am having?
> (I am quite new to Django)
>
> I have an app which which serves up XHR requests (via YUI3 io
> uitility) to urlpatterns. The views make HttpResponses using
> render_to_response like so:
>
> return render_to_response("registration/register.html", {
> 'form': form,
> }, context_instance=RequestContext(request))
>
> That is all fine: The html content is rendered in the relevant div
> (using a YUI3 io's success callback) .
>
> But the problem I have - and I may be thinking about this in the wrong
> way - is that I also want to pick out some variables from the response
> to use in my js success callback. If I wasn't using django templating
> this could be straightforwardly achieved with a JSON response parsed
> client side. So my difficulty is that I want both a rendered template
> response and some JSON response in the same callback... I have thought
> about 'enriching' the render_to_response context with these additional
> variables, inserting them in hidden html fields and then querying the
> dom for their values - but that feels awkward and also means the
> response has to be added to the dom before the js can act on their
> values.
>
> This seems like a familiar nut that must be well documented
> somewhere... :) any help, pointers very appreciated.
>
> Thanks
> Alex
>
The prototype framework allows you to place (small amounts) of JSON
into the response header 'X-JSON', which it then evaluates, and stores
in transport.headerJSON. If you are using prototype, that could be a
solution, or implement your own version of that.
Cheers
Tom
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