Straightforward question - apologies if it is a duplicate, but I can't find the answer if so.

I have a User model and a Submission model, like this:

class Submission(models.Model):
    uploaded_by = models.ForeignKey('User')
class User(models.Model):
    name = models.CharField(max_length=250 )

How can I show the number of Submissions made by each user in the template? I've tried {{ user.submission.count }}, like this:

for user in users:
    {{ user.name }} ({{ user.submission.count }} submissions)

but no luck...