朋友们,我正试图在django中使用ajax处理表单提交。我收到一个错误,上面写着,
The view auths.change_profile.change_username didn't return an HttpResponse object. It returned None instead.
这是我的change_profile.py
def change_username(request):
if request.is_ajax() and request.method == 'GET':
return render(request,"auths/edits/edit_username.html",{})
elif request.method == 'POST' and request.is_ajax():
username = request.POST['username']
user = User.objects.get(username=request.user.username)
user.username = username
user.save()
if user.save():
data = "Username successfully updated"
else:
data = "Something went wrong!"
return HttpResponse(json.dumps({'data':data}), content_type="application/json")
我的ajax.js如下
$(document).ready(
$('#username_form').submit(function(){
$.ajax({
type:"POST",
url:'/change_username/',
data:{
'csrfmiddlewaretoken':$('input[name=csrfmiddlewaretoken]').val()
},
success:function(data){
$('#username').html(data);
}
});
});
);
我哪里错了?
删除此
if request.is_ajax():
return render(request,"auths/edits/edit_username.html",{})
您不需要它,因为从技术上讲,Ajax请求也是POST或GET类型的。所以你只需要:
if request.method == 'POST':
username = request.POST['username']
user = User.objects.get(username=request.user.username)
user.username = username
user.save()
if user.save():
data = "Username successfully updated"
else:
data = "Something went wrong!"
return HttpResponse(json.dumps({'data':data}))
else:
json.dumps({"nothing to see": "this isn't happening"})
尝试这样做:
from django.http import JsonResponse
def change_username(request):
if request.is_ajax() and request.method == 'GET':
return render(request, "auths/edits/edit_username.html", {})
elif request.is_ajax() and request.method == 'POST':
username = request.POST['username']
user = User.objects.get(username=request.user.username)
user.username = username
user.save()
if user.save():
data = "Username successfully updated"
else:
data = "Something went wrong!"
return JsonResponse({'data': data})
Django 1.7之后,推荐使用JsonResponse
格式。1.7版之前是您最初使用的方法。
如果可行,请告诉我。
编辑(尝试2):
from django.http import JsonResponse
from django.shortcuts import get_object_or_404
from django.views.decorators.http import require_http_methods
@require_http_methods(['POST'])
def change_username(request):
if not request.is_ajax():
return render(request, "auths/edits/edit_username.html", {})
else:
new_username = request.POST.get('username')
user = get_object_or_404(User, id=request.user.id)
initial_username = user.username
user.username = new_username
user.save()
data = {}
if user.username == new_username:
data['data'] = "Username successfully updated!"
else:
data['data'] = "Something went wrong!"
return JsonResponse(data)