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# Django Imports
from django.db import models
from django.utils import timezone
from django.contrib.auth.models import User
# Local Imports
from yaksh.models import Course, Lesson
class TrackLesson(models.Model):
user = models.ForeignKey(User, on_delete=models.CASCADE)
course = models.ForeignKey(Course, on_delete=models.CASCADE)
lesson = models.ForeignKey(Lesson, on_delete=models.CASCADE)
current_time = models.CharField(max_length=100, default="00:00:00")
video_duration = models.CharField(max_length=100, default="00:00:00")
creation_time = models.DateTimeField(auto_now_add=True)
class Meta:
unique_together = ('user', 'course', 'lesson')
def get_last_access_time_and_vists(self):
lesson_logs = self.lessonlog_set
last_access_time = None
if lesson_logs.exists():
last_access_time = lesson_logs.last().last_access_time
return last_access_time, lesson_logs.count()
def __str__(self):
return (f"Track {self.lesson} in {self.course} "
f"for {self.user.get_full_name()}")
class LessonLog(models.Model):
track = models.ForeignKey(TrackLesson, on_delete=models.CASCADE)
last_access_time = models.DateTimeField(default=timezone.now)
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