HI
I subscribe all @Joseph said, and add:
For url dispatcher, can you try with very different stamentlist regex? I
think you can't have 2 same regex, or if you want, you may treat this route
inside classview
About AJAX,I can't help no more, I'm newbie with AJAX,
I think that is more interesting return responses as JsonResponse,
Maybe now is complicated to restructure the code, but I think is more
powerful at long time.
Only this suggestion
Thank you :)
Missatge de Joseph Bacchilega <jos...@pulsewave.net> del dia dl., 19 d’ag.
2019 a les 23:10:
> Do not use alerts to debug your JS code.
>
> Use console.log() and/or debugger while keeping your Chrome/Firefox
> console (opens with F12) open.
>
> In this case, try to see what "data" is set to in the response success
> callback function.
>
> > But then I think it should be set to empty because I don't want to be
> redirected to another url.
>
> $.ajax does not redirect you in any way (that's the point of using $.ajax
> over <form>). You must specify a URL. Default behavior for empty URL is, I
> think, to query the same URL as the page the user is currently visiting.
>
> Your problem is likely in the URL structure: try to manually visit those
> URLs to see if your views.py log fires, then put that link manually in
> $.ajax and, finally, once you've verified that works, replace the manually
> typed link with the template tag {{ }}.
>
> Il giorno domenica 18 agosto 2019 15:18:47 UTC+2, Xiaoyun Huang ha scritto:
>>
>> I am deploying a website using Django. There is an application called
>> 'forum', supporting a discussion forum on my website.
>>
>> The url of the discussion forum is 'XXX.com/forum/roomY'. I want to
>> refresh a div id = ''chat'', which includes a message list, on this page
>> when users click a refresh button. I want to use AJAX to do that.
>>
>>
>> But I find that I could not call the function
>> updatestatementlist(request) to retrieve the updated message list so it can
>> be passed to the on this page.
>>
>>
>> */forum/views.py def updatestatementlist(request):*
>>
>> log.debug("call statementlist function")
>> statements = Statement.objects.filter(discussion=discussion)return
>> render(request, 'forum/statementlist.html', {
>> 'statements': statements
>> })
>>
>>
>> I cannot see the log info so I think by clicking the button I fail to
>> call this function.
>>
>>
>> The main html page of the discussion forum is */forum/discussion.html*,
>> which is under the template folder. I extract the html code within the div
>> id = "chat" to a separate html */forum/statementlist.html*as suggested
>> here
>> <https://stackoverflow.com/questions/3583534/refresh-div-element-generated-by-a-django-template>
>> and
>> several other SO posts.
>>
>>
>> */forum/discussion.html*
>>
>> <button id = "Refresh"> Refresh </button><div id="chat">
>> {% include 'forum/statementlist.html' %}</div>
>>
>> */forum/statementlist.html*
>>
>> {% recursetree statements %}{% endrecursetree %}
>>
>> *forum.js*
>>
>> //When users click the refresh button
>> $("#Refresh").on("click", function(event){
>> alert("Refresh clicked")
>> $.ajax({
>> url: '',
>> type: "GET",
>> success: function(data) {
>> alert("success")
>> var html = $(data).filter('#chat').html();
>> $('#chat').html(html);
>> }
>> });});
>>
>>
>> I also tried a few other url in this AJAX request: {% url
>> updatestatementlist %}, {% url 'updatestatementlist' %}. But then I think
>> it should be set to empty because I don't want to be redirected to another
>> url. The discussion forum has a url of 'XXX.com/forum/roomY', by clicking
>> the refresh button on this page I only want to refresh the div and fetch an
>> updated statement list from the server.
>>
>>
>> BTW, I can see the two alerts after I click the button.
>>
>>
>> */forum/urls.py*
>>
>> urlpatterns = [...
>> url(r'^(?P<label>[\w-]{,50})/$', views.discussion_forum,
>> name='discussion_forum'),
>> url(r'^(?P<label>[\w-]{,50})/$', views.statementlist, name='statementlist'),
>>
>> ]
>>
>>
>> /forum/views.py def discussion_forum() is used to load all the
>> information when the user first arrives at this forum.
>>
>>
>> I guess my problem might be that 1) the AJAX is wrong; 2) the url is
>> wrong so that the updatestatementlist() can not be called.
>>
>>
>> Can anyone help me with that? Thank you so much.
>>
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