How To Solve Error "'nonetype' Object Has No Attribute 'day'" In Django Application

I noticed this error in my application, ''NoneType' object has no attribute 'day''. What I have noticed about it is that. I have a model named course_schedule, the course schedule

Solution 1:

Looks like maybe sch is None.

You should always put your object get in a try...except block or you can use the inbuilt get_object_or_404

Solution 2:

Following a previous question snippet of your add_courses model.

classadd_courses(models.Model):
    Course_Name = models.CharField(max_length=200, blank=True)
    Manager_Name = models.ForeignKey(Manager_login_information, on_delete=models.CASCADE, blank=True)
    description = models.TextField(default='', blank=True)
    syllabus = models.TextField(default='', blank=True)
    student = models.ManyToManyField(add_students_by_manager, blank=True)
    schedule = models.ForeignKey(course_schedule, on_delete=models.CASCADE, blank=True)

    def__str__(self):
        return self.Course_Name

You have the following relationship path from Assign_teacher_to_courses to course_schedule:

Assign_teacher_to_courses -> add_courses -> course_schedule

Therefore to get the schedule of each course in get_course_name_th you should change sch = course_schedule.objects.get(id=course.Course_Name.pk) to sch = course.Course_Name.schedule.