Django Many to Many 'QuerySet' object has no attribute 'members'

user_12035345 0
Viewed 72

First, here is my Location model. It has one ManyToManyField called members.

Model:

class Location(models.Model):
    name = models.CharField(max_length=200)
    # ...

    members = models.ManyToManyField(User, related_name="members")

    # ...

(Note, "# ..." replaces more fields)

And then in a view I did this.

DetailView

class LocationDetailView(DetailView):
    model = Location
    context_object_name = "location"
    
    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        
        location = Location.objects.filter(pk=self.get_object().pk)
        context["members"] = location.members.all()
        
        return context

Error

'QuerySet' object has no attribute 'members'
django-views django-orm django-models django python
2 Answers

Your location is not a Location object, but a QuerySet that contains one Location object. Fetching this however is not necessary, you can work with:

class LocationDetailView(DetailView):
    model = Location
    context_object_name = 'location'
    
    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        context['members'] = self.object.members.all()
        return context

But in fact you do not need to pass the members to the context: in the template you can work with:

{% for member in location.members.all %}
    …
{% endfor %}
user_675790

I found the misake, it's

location = Location.objects.get(pk=self.get_object().pk)

and not

location = Location.objects.filter(pk=self.get_object().pk)
user_120353450
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