many-to-many.py

"""
Create a Many­to­Many relationship
Create two models connected by a many­to­many relationship.

Model 1:
  Campus
  city
  state
  name

Model 2:
  Student
  first name
  last name

Bearing in mind that a student can belong to more than one campus,
set up their relationship with an additional field denoting if a
particular campus is their primary campus.
"""

class Campus(models.Model):
  
    students = models.ManyToManyField(Student)

    city = models.CharField(max_length=30)
    name = models.CharField(max_length=30)
    state = models.CharField(max_length=2)

    def __repr__(self):
        return repr({
            "city": self.city,
            "name": self.name,
            "state": self.state
        })


class Student(model.Model):
  
    primary_campus = models.ForeignKey(Campus)

    first_name = models.CharField(max_length=100)
    last_name = models.CharField(max_length=100)

    def __str__(self):
        return self.first_name + self.last_name