Re: Returning data from view to ajax call

On Tue, Jul 2, 2013 at 3:37 PM, Larry Martell <larry.martell@gmail.com> wrote:

On Tue, Jul 2, 2013 at 4:24 PM, Sithembewena Lloyd Dube
<zebra05@gmail.com> wrote:
> What data format is your view returning? Django views return HTTP response
> objects (by default, at least) - although Python lists (and other Python
> collections?) should work when passed into a view in its context (I have
> found Django querysets to be an exception).
>
> AJAX is Asynchronous Javascript, so I presume that an AJAX call would expect
> something like JSON output from a callable. I guess with some pain one could
> get Javascript to ingest Django querysets? I couldn't think of a sensible
> reason to do so - and I stand to be corrected.

I want to return a string. I've never done this before. I've been
reading examples on the web and I came up with this:

$.ajax({
    url: 'permalink/',
    type: 'GET',
    data: {
        report: "{% url motor.core.reports.views.view
the_controller.app.name the_controller.get_name %}",
        params: "{{ the_report.params_string }}"
    },
    dataType: 'json',
    success: function (data) {
        setTimeout(function () {
            alert(data);
        }, 0);
    }
});

 

You shouldn't need the setTimeout in your success call - just function(data) { alert(data); } .. should be okay.

In my function I first tried returning just the string, but that was
causing a 500 error. Then I tried this:

return HttpResponse(content=data, content_type="text/plain", status=201)

try status=200 ?

 

I don't get the error, but the ajax success function does not seem to be called.

An invaluable tool here is to use the Developer Tools in the browser to inspect AJAX requests made and their responses .. in Chrome, open Developer Tools (f12 is a handy shortcut for this) and go to the Network Tab, and then you should see the Network Requests show up, and be able to examine what was returned, etc..

Hope that helps,

Sanjay

 

>
>
> On Wed, Jul 3, 2013 at 12:06 AM, Larry Martell <larry.martell@gmail.com>
> wrote:
>>
>> I'm invoking a view from an ajax call and I want to return data. But
>> the browser interpertates the return as a 500 (internal sever error)
>> and my ajax success function does not get called. How can I return a
>> successful status (like a 201) and also return data?
>>
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>
>
>
> --
> Regards,
> Sithu Lloyd Dube
>
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