Attendance system using Django
问题 Models attendance_choices = ( ('absent', 'Absent'), ('present', 'Present') ) class Head_of_department(models.Model): first_name = models.CharField(max_length=200) last_name = models.CharField(max_length=200) email = models.CharField(max_length=30) def __str__(self): return self.first_name class Employee(models.Model): first_name = models.CharField(max_length=200, unique=True) last_name = models.CharField(max_length=200, unique=True) head_of_department = models.ForeignKey('Head_of_department',