from django.db import models from django.contrib.auth.models import AbstractUser from apps.courses.models import Course, Lesson # Create your models here. class User(AbstractUser): pass class PlayHistory(models.Model): lesson = models.ForeignKey(Lesson, on_delete=models.SET_NULL, null=True) time = models.IntegerField() user = models.ForeignKey(User, on_delete=models.CASCADE) update_time = models.DateTimeField(auto_now=True)