Django migration?

Question

Django

I decided to add a new app to the project. Created a model:

class Comments_appl(models.Model):
  user = models.ForeignKey(settings.AUTH_USER_MODEL, default=1)
  content_type = models.ForeignKey(ContentType, on_delete=models.CASCADE)
  object_id = models.PositiveIntegerField()
  content_object = GenericForeignKey('content_type', 'object_id')
  content = models.TextField()
  datetime = models.DateTimeField(auto_now_add = True)


  def __unicode__(self):
    return str(self.user.username)
  def __str__(self):
    return str(self.user.username)

After makemigrations I get:

You are trying to add a non-nullable field 'content_type' to comments_appl without a default; we can't do that (the database needs something to populate existing rows).
Please select a fix:
 1) Provide a one-off default now (will be set on all existing rows with a null value for this column)
 2) Quit, and let me add a default in models.py
Select an option:

From the message it is clear that it is impossible to leave the content-type type without the default attribute . But what if I don't need it and want to leave it like that?
Tried deleting the migration and overwriting, still get this error

Answer 1

Learn the man for proper naming of models in django and classes in python
Do not use generic FK until you understand the basic concepts of the framework