$.getJSON should be embedded in your initial Page Wait response page. The
first argument isn't a view, rather a URL. So you might want to use the
django url template tag, e.g.,
$.getJSON('{% url whatever.run_DHM %}', ...)
The second argument is a callback function. The browser stores the callback
and subsequently calls it when the url requested returns a response. It also
might be confusing because the function is defined inline (anonymous), which
is a frequent shortcut used in javascript. But anyway, when the callback
function executes he just put console.log(result.data) as way to see what
gets returned.
You say you want to send the user to another page with the results, but you
could return a rendered chunk of html code and replace the Please Wait
message using jquery to mainupulate the DOM (jquery documentation has
tutorials). Or if you want to redirect to a new page you could store the
calculation results in the session and redirect to a view that pulls from
that same session data (or use memcached). So maybe instead of
console.log(result.data), you could use
window.location="/some/url/to/show/calculations/";
His example returns a HttpResponse just to illustrate the concept of how to
return JSON data. You don't have to return JSON, but it's a good method if
you want to return structured data. In the above example of a redirect you
could just return anything I suppose, i.e., just an 'OK'.
On Tue, Aug 31, 2010 at 5:11 PM, Bradley Hintze <bradle...@aggiemail.usu.edu
> wrote:
> Ok, I'll try to elaborate. again java is foreign to me although I've
> spent all day trying to learn some.
> Here's the code:
>
> def please_wait(request):
> # ... setup context or something
> return render_to_response("please_wait.html")
>
> def run_DHM(request)
> # ... perform calculations and collect the result in a dict
> data = {"result": something}
> return HttpResponse(json.dumps(data), mimetype="application/json")
>
>
> # using jquery in your html
> <script type="text/javascript">
> $.getJSON("/run_DHM/", function(data) {
> // do something with result
> console.log(data.result);
> });
> </script>
>
> def run_DHM(request) is straight forward then it falls apart.
>
> $.getJSON("/run_DHM/", function(data) {
> // do something with result
> console.log(data.result);
> });
>
> I presume that '$.getJSON("/run_DHM/", function(data)' somehow runs
> the run_DHM function? How can it even find the function since it lives
> in view.py? '// do something with result'???? I want to send another
> page to the client with the results but do I do this here? If not,
> what do I do here? What does 'console.log(data.result);' do? Why does
> def run_DHM(request) return a HttpResponse? I have a template I want
> it to return so shouldn't I use render_to_response? Obviously, I am
> not getting how the javascript works so I have no idea how to set this
> up. I was hoping there was a pythonic solution :).
>
> I hope this explains my utter confusion sufficiently.
>
> Bradley
>
>
>
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