AttributeError After processing the view - django

Question

After Submitting the like button data is successfuly updating with the database but after this step it won't redirecting to the successful url. instead of that it is throwing attribute error. If I use HttpResponseRedirect('/album/') instaed of successful url this error is not comming. Please refer this link for the traceback
models.py
Codes in models.py
class VoteManager(models.Manager):
def get_vote_or_unsaved_blank_vote(self,song,user):
try:
return Vote.objects.get(song=song,user=user)
except ObjectDoesNotExist:
return Vote.objects.create(song=song,user=user)
class Vote(models.Model):
UP = 1
DOWN = -1
VALUE_CHOICE = ((UP, "👍️"),(DOWN, "👎️"),)
like = models.SmallIntegerField(null=True, blank=True, choices=VALUE_CHOICE)
user = models.ForeignKey(User,on_delete=models.CASCADE)
song = models.ForeignKey(Song, on_delete=models.CASCADE)
voted_on = models.DateTimeField(auto_now=True)
objects = VoteManager()
class Meta:
unique_together = ('user', 'song')
views.py
codes in views.py
class SongDetailView(DetailView):
model = Song
template_name = 'song/song_detail.html'
def get_context_data(self,**kwargs):
ctx = super().get_context_data(**kwargs)
if self.request.user.is_authenticated:
vote = Vote.objects.get_vote_or_unsaved_blank_vote(song=self.object, user = self.request.user)
vote_url = reverse('music:song_vote_create', kwargs={'song_id':vote.song.id})
vote_form = SongVoteForm(instance=vote)
ctx['vote_form'] = vote_form
ctx['vote_url'] = vote_url
return ctx
class SongVoteCreateView(View):
form_class = SongVoteForm
context = {}
def get_success_url(self,**kwargs):
song_id = self.kwargs.get('song_id')
return reverse('music:song_detail', kwargs={'pk':song_id})
def post(self,request,pk=None,song_id=None):
user = self.request.user
song_obj = Song.objects.get(pk=song_id)
vote_obj,created = Vote.objects.get_or_create(song = song_obj,user = user)
vote_form = SongVoteForm(request.POST, instance=vote_obj)
if vote_form.is_valid():
new_vote = vote_form.save(commit=False)
new_vote.user = self.request.user
new_vote.save()
return new_vote
song_detail.html
codes in html page.
<form action="{{vote_url}}" method="post" enctype="multipart/form-data">
{% csrf_token %}
{{ vote_form.as_p }}
<button class="btn btn-primary" type="submit" >Vote</button>
</form>
Error code
Please refer this link for the traceback
'Vote' object has no attribute 'get'

Answer 1

The post method needs to return an HttpResponse, not a Vote object.
But you shouldn't be defining post in the first place. All that code should go in form_valid.
def form_valid(self, form):
user = self.request.user
song_obj = Song.objects.get(pk=self.kwargs['song_id'])
vote_obj, _ = Vote.objects.get_or_create(song = song_obj, user = user)
form.instance = vote_obj
return super().form_valid(form)
Note, you don't need to check is_valid, and you also don't need to set the user as you've already done that in vote_obj.

Answer 2

You are returning Vote object from post method in your SongVoteCreateView view. You should return Response instead. Django doesn't know what to do with model object returned from a view.