Question

Let’s say that I have a blog entry with multiple tags. The tags field is a ManyToMany in my model. I want to take all blog entries and for each entry I want to get all tags.

Basically I would do something like that

entries = Entries.objects.get(author=user)
for entry in entries:
     tags[entry.pk] = entry.tags.all()

The problem is that I get the MultipleObjectsReturned error.

Answer 1

If you want to return all entries with author=user, then use filter()

entries = Entries.objects.filter(author=user)

At the moment, you are using get(), which expects to return one Entries object. As there is more that one Entries with author=user, you get the Entries.MultipleObjectsReturned error.

Note, with Django, the convention is to use the singular name Entry for your model, instead of the plural Entries.