Django models ManyToMany relations mechanics

Question

I need to create Profile model and Project model and don't really understand ManyToMany field mechanics.

Now I've got:

class Project(models.Model):
    title = models.CharField(max_length=20, unique=True)
    ...

class Profile(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE, unique=True)
    projects = models.ManyToManyField(Project, related_name='profiles')
    ...

Could I now call all profiles connected with project using project.profiles and how to add profiles field into Project admin form? I've tried to find some examples but not found any.

Answer 1

You can get all profiles from a Project doing something like that:

# Setup
project1 = Project.objects.get(title='first')
project2 = Project.objects.get(title='second')

profile = Profile.objects.create(user=user)
profile.projects.add(project2)

# Get all profiles from a project
project2.profiles.all()
>>> <QuerySet [<Profile: Profile object>]>

About forms, I'm not the best to answer that because I don't use, I prefer to use "raw" forms.