My Django Project Sample

notebooks.models.py

from django.db import models
from students.models impport Student

class Project(models.Model):
  student = models.ForeignKey(Student)
  name = models.CharField(max_length=200)

  def __str__(self):
    return self.name

class Notebook(models.Model):
  project = models.ForeignKey(Project)
  name = models.CharField(max_length=200)
  description = models.TextField()
  created_at = models.DateTimeField(auto_now=True)

  def __str__(self):
    return self.name

class Note(models.Model):
  notebook = models.ForeignKey(Notebook)
  annotation = models.TextField()
  created_at = models.DateTimeField(auto_now=True)
  updated_at = models.DateTimeField(null=True,blank=True)

  def __str__(self):
    return self.annotation