text: from django.db import models
  import uuid
  
  
  class Folder(models.Model):
      id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
      created = models.DateTimeField(auto_now_add=True)
  
      def __str__(self):
          return str(self.id)
  
  
  class Note(models.Model):
      text = models.TextField(max_length=None)
      created = models.DateTimeField(auto_now_add=True)
      updated = models.DateTimeField(auto_now=True)
      folder = models.ForeignKey(Folder, on_delete=models.CASCADE)
  
      def __str__(self):
          return "{:.15} ({:%Y-%m-%d %H:%M:%s})".format(self.text, self.created)
  