cbv test

models.py,
class Students(models.Model):
    student_name = models.CharField(max_length=100)
    student_id = models.CharField(max_length=50)
    student_dept = models.CharField(max_length=30)
    student_sec = models.CharField(max_length=2)

    def get_absolute_url(self):
        return reverse('personalInfo:createStudentDetails', kwargs={'pk': self.pk})

    def __str__(self):
        return self.student_name + ' - ' + self.student_id + ' - ' + self.student_dept + ' - ' + self.student_sec


class StudentDetails(models.Model):
    students = models.ForeignKey(Students, on_delete=models.CASCADE)
    present_address = models.TextField()
    permanent_address = models.TextField()
    student_phone = models.BigIntegerField()
    gpo_box_number = models.IntegerField()


urls.py,
path('studentDetails/add/<int:pk>/', views.CreateStudentDetails.as_view(), name='createStudentDetails')



views.py,
#adding details for student
class CreateStudentDetails(CreateView):
    model = StudentDetails
    fields = ['present_address', 'permanent_address', 'student_phone', 'gpo_box_number']
#Problem
Can't figure it out how to assign primary key to the "students" field and handle it here which will contain a foreign key of "Students" model