text: import uuid
  
  from django.db import models
  from django.contrib.auth.models import User
  
  
  class JournalEntry(models.Model):
      author = models.ForeignKey(User, models.SET_NULL, null=True)
      ref_id = models.UUIDField(default=uuid.uuid4, db_index=True)
      date_added = models.DateTimeField(null=False)
  