Detail page not working

Using Django
1

I am trying to count likes on each item in my blog. But i am getting this error

method’ object does not support item assignment

My Model
likes = models.ManyToManyField(User, related_name=‘blog_posts’)

def total_likes(self):
    return self.likes.count()

Views
class ItemDetailView(DetailView):
model = Item
template_name =‘waqart/item_detail.html’

#function to count total likes the main total_likes function is detail inside model

def get_context_data(self, *args, **kwargs):
    context = super(ItemDetailView, self).get_context_data

    stuff = get_object_or_404(Item, id=self.kwargs['pk'])
    total_likes = stuff.total_likes()
    context['total_likes']= total_likes
    return context
2

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