uuid

traceback

Operations to perform:
  Apply all migrations: admin, auth, contenttypes, host_manager, sessions
Running migrations:
  Applying host_manager.0002_auto_20170515_0805...Traceback (most recent call last):
  File "/home/admin/.env/lib/python3.6/site-packages/django/db/models/fields/__init__.py", line 2392, in to_python
    return uuid.UUID(value)
  File "/usr/local/lib/python3.6/uuid.py", line 140, in __init__
    raise ValueError('badly formed hexadecimal UUID string')
ValueError: badly formed hexadecimal UUID string

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "manage.py", line 22, in <module>
    execute_from_command_line(sys.argv)
  File "/home/admin/.env/lib/python3.6/site-packages/django/core/management/__init__.py", line 363, in execute_from_command_line
    utility.execute()
  File "/home/admin/.env/lib/python3.6/site-packages/django/core/management/__init__.py", line 355, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/home/admin/.env/lib/python3.6/site-packages/django/core/management/base.py", line 283, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/home/admin/.env/lib/python3.6/site-packages/django/core/management/base.py", line 330, in execute
    output = self.handle(*args, **options)
  File "/home/admin/.env/lib/python3.6/site-packages/django/core/management/commands/migrate.py", line 204, in handle
    fake_initial=fake_initial,
  File "/home/admin/.env/lib/python3.6/site-packages/django/db/migrations/executor.py", line 115, in migrate
    state = self._migrate_all_forwards(state, plan, full_plan, fake=fake, fake_initial=fake_initial)
  File "/home/admin/.env/lib/python3.6/site-packages/django/db/migrations/executor.py", line 145, in _migrate_all_forwards
    state = self.apply_migration(state, migration, fake=fake, fake_initial=fake_initial)
  File "/home/admin/.env/lib/python3.6/site-packages/django/db/migrations/executor.py", line 244, in apply_migration
    state = migration.apply(state, schema_editor)
  File "/home/admin/.env/lib/python3.6/site-packages/django/db/migrations/migration.py", line 129, in apply
    operation.database_forwards(self.app_label, schema_editor, old_state, project_state)
  File "/home/admin/.env/lib/python3.6/site-packages/django/db/migrations/operations/fields.py", line 86, in database_forwards
    field,
  File "/home/admin/.env/lib/python3.6/site-packages/django/db/backends/sqlite3/schema.py", line 238, in add_field
    self._remake_table(model, create_field=field)
  File "/home/admin/.env/lib/python3.6/site-packages/django/db/backends/sqlite3/schema.py", line 113, in _remake_table
    self.effective_default(create_field)
  File "/home/admin/.env/lib/python3.6/site-packages/django/db/backends/base/schema.py", line 229, in effective_default
    default = field.get_db_prep_save(default, self.connection)
  File "/home/admin/.env/lib/python3.6/site-packages/django/db/models/fields/__init__.py", line 766, in get_db_prep_save
    prepared=False)
  File "/home/admin/.env/lib/python3.6/site-packages/django/db/models/fields/__init__.py", line 2383, in get_db_prep_value
    value = self.to_python(value)
  File "/home/admin/.env/lib/python3.6/site-packages/django/db/models/fields/__init__.py", line 2397, in to_python
    params={'value': value},
django.core.exceptions.ValidationError: ["'' is not a valid UUID."]

--- models.py

import uuid
from django.db import models
from django.utils import timezone

Create your models here.

class Host(models.Model):
### TODO AddedBy should not be something a user can change
## created when jail is initializing jid,
## created when jail is initializing if ip6 support ip6
## created when jail is initializing tag
AddedBy = models.ForeignKey('auth.User')
jid = models.UUIDField(default=uuid.uuid4, editable=False, unique=True)
#uniquemodels.UUIDField(default=uuid.uuid4, editable=False, unique=True)
Hostname = models.CharField(max_length=200)
ip4_addr = models.CharField(max_length=200)
backup = models.BooleanField(blank=False, null=False, default=False)
added_date = models.DateTimeField(default=timezone.now)
published_date = models.DateTimeField(blank=True, null=True, default=False)

def publish(self):
    self.published_date = timezone.now()
    self.save()

### too set default logged on user
# def save(self, user, commit=True):
#     job = ModelForm.save(commit=False)
#     job.AddedBy = user
#     if commit:
#         job.save()
#     return job

def __str__(self):
    return self.Hostname