You need to include the jquery library script in your html page if you're calling getJSON as in the previous emails (and note that getJSON isn't necessarily the function you want - jquery provides many options for doing AJAX). Either download it, or use one of the public repositories:
http://docs.jquery.com/Downloading_jQuery#CDN_Hosted_jQuery In fact, just view the html source code for the link just referenced - you'll see how jquery is included: <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4/jquery.min.js <view-source:http://ajax.googleapis.com/ajax/libs/jquery/1.4/jquery.min.js>"></script> Then I'd recommend one of the tutorials, e.g.,: http://docs.jquery.com/Tutorials:Getting_Started_with_jQuery The tutorials should serve as live examples. On Tue, Sep 7, 2010 at 10:31 AM, Bradley Hintze <bradle...@aggiemail.usu.edu > wrote: > It seems as if this is the only solution but after a week of trying to > implement it in a variety of ways it won't work. is there something I > need to download (jquery)? More helpful would be a real HTML page as > an example or a live example on the web. I am sorry for the trouble > but I'd like to understand this and get it working. > > On Tue, Aug 31, 2010 at 7:37 PM, Alec Shaner <asha...@chumpland.org> > wrote: > > $.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 > >> > >> > > > > -- > > You received this message because you are subscribed to the Google Groups > > "Django users" group. > > To post to this group, send email to django-us...@googlegroups.com. > > To unsubscribe from this group, send email to > > django-users+unsubscr...@googlegroups.com<django-users%2bunsubscr...@googlegroups.com> > . > > For more options, visit this group at > > http://groups.google.com/group/django-users?hl=en. > > > > > > -- > Bradley J. Hintze > Graduate Student > Duke University > School of Medicine > 801-712-8799 > > -- > You received this message because you are subscribed to the Google Groups > "Django users" group. > To post to this group, send email to django-us...@googlegroups.com. > To unsubscribe from this group, send email to > django-users+unsubscr...@googlegroups.com<django-users%2bunsubscr...@googlegroups.com> > . > For more options, visit this group at > http://groups.google.com/group/django-users?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-us...@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
