Group by Foreign Key and show related items - Django

Question

I have the following models:

class Company(CachedModel):
    name = models.CharField(max_length=255)

class UserExtendedProfile(CachedModel):

    company =          


        

Answer 1

You can add multiple arguments on your order_by() method. Therefore you can do ordering inside orderings.

users = UserExtendedProfile.objects.values('company', 'user').order_by('company', 'user')

For a structure like:

[{ company: [user1, user2, ] }, ]

Try using a defaultdict

from collections import defaultdict 
users = defaultdict(list)
for result in UserExtendedProfile.objects.values('company', 'user').order_by('company', 'user'):
    users[result['company']].append(result['user'])

With this you should get on users the structure you want.

Answer 2

If you are simply trying to accomplish this for display purposes, take a look at: https://docs.djangoproject.com/en/1.8/ref/templates/builtins/#regroup

It lets you do just that inside the template.