ProgrammingError at column "" does not exist - django

Question

I added a custom extension to djangos User model and now I'm getting this error on my localhost url:
return self.cursor.execute(sql, params)
django.db.utils.ProgrammingError: column users_account.birthday does not exist
LINE 1: ... "users_account"."id", "users_account"."user_id", "users_acc...
^
Furthermore, when I tried to migrate my changes I got this error in the terminal:
Operations to perform:
Apply all migrations: admin, auth, chaburah, contenttypes, sessions, taggit, users
Running migrations:
Applying users.0002_alter_account_birthday...Traceback (most recent call last):
File "/Users/almoni/.local/share/virtualenvs/my_chaburah-AiCSV-sC/lib/python3.9/site-packages/django/db/backends/utils.py", line 89, in _execute
return self.cursor.execute(sql, params)
psycopg2.errors.UndefinedColumn: column "birthday" does not exist
LINE 1: ..._account" ALTER COLUMN "birthday" TYPE date USING "birthday"...
^
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/Users/almoni/Desktop/Code/my_chaburah/manage.py", line 22, in <module>
main()
File "/Users/almoni/Desktop/Code/my_chaburah/manage.py", line 18, in main
execute_from_command_line(sys.argv)
File "/Users/almoni/.local/share/virtualenvs/my_chaburah-AiCSV-sC/lib/python3.9/site-packages/django/core/management/__init__.py", line 446, in execute_from_command_line
utility.execute()
File "/Users/almoni/.local/share/virtualenvs/my_chaburah-AiCSV-sC/lib/python3.9/site-packages/django/core/management/__init__.py", line 440, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/Users/almoni/.local/share/virtualenvs/my_chaburah-AiCSV-sC/lib/python3.9/site-packages/django/core/management/base.py", line 414, in run_from_argv
self.execute(*args, **cmd_options)
File "/Users/almoni/.local/share/virtualenvs/my_chaburah-AiCSV-sC/lib/python3.9/site-packages/django/core/management/base.py", line 460, in execute
output = self.handle(*args, **options)
File "/Users/almoni/.local/share/virtualenvs/my_chaburah-AiCSV-sC/lib/python3.9/site-packages/django/core/management/base.py", line 98, in wrapped
res = handle_func(*args, **kwargs)
File "/Users/almoni/.local/share/virtualenvs/my_chaburah-AiCSV-sC/lib/python3.9/site-packages/django/core/management/commands/migrate.py", line 290, in handle
post_migrate_state = executor.migrate(
File "/Users/almoni/.local/share/virtualenvs/my_chaburah-AiCSV-sC/lib/python3.9/site-packages/django/db/migrations/executor.py", line 131, in migrate
state = self._migrate_all_forwards(
File "/Users/almoni/.local/share/virtualenvs/my_chaburah-AiCSV-sC/lib/python3.9/site-packages/django/db/migrations/executor.py", line 163, in _migrate_all_forwards
state = self.apply_migration(
File "/Users/almoni/.local/share/virtualenvs/my_chaburah-AiCSV-sC/lib/python3.9/site-packages/django/db/migrations/executor.py", line 248, in apply_migration
state = migration.apply(state, schema_editor)
File "/Users/almoni/.local/share/virtualenvs/my_chaburah-AiCSV-sC/lib/python3.9/site-packages/django/db/migrations/migration.py", line 131, in apply
operation.database_forwards(
File "/Users/almoni/.local/share/virtualenvs/my_chaburah-AiCSV-sC/lib/python3.9/site-packages/django/db/migrations/operations/fields.py", line 235, in database_forwards
schema_editor.alter_field(from_model, from_field, to_field)
File "/Users/almoni/.local/share/virtualenvs/my_chaburah-AiCSV-sC/lib/python3.9/site-packages/django/db/backends/base/schema.py", line 747, in alter_field
self._alter_field(
File "/Users/almoni/.local/share/virtualenvs/my_chaburah-AiCSV-sC/lib/python3.9/site-packages/django/db/backends/postgresql/schema.py", line 231, in _alter_field
super()._alter_field(
File "/Users/almoni/.local/share/virtualenvs/my_chaburah-AiCSV-sC/lib/python3.9/site-packages/django/db/backends/base/schema.py", line 963, in _alter_field
self.execute(
File "/Users/almoni/.local/share/virtualenvs/my_chaburah-AiCSV-sC/lib/python3.9/site-packages/django/db/backends/base/schema.py", line 192, in execute
cursor.execute(sql, params)
File "/Users/almoni/.local/share/virtualenvs/my_chaburah-AiCSV-sC/lib/python3.9/site-packages/django/db/backends/utils.py", line 103, in execute
return super().execute(sql, params)
File "/Users/almoni/.local/share/virtualenvs/my_chaburah-AiCSV-sC/lib/python3.9/site-packages/django/db/backends/utils.py", line 67, in execute
return self._execute_with_wrappers(
File "/Users/almoni/.local/share/virtualenvs/my_chaburah-AiCSV-sC/lib/python3.9/site-packages/django/db/backends/utils.py", line 80, in _execute_with_wrappers
return executor(sql, params, many, context)
File "/Users/almoni/.local/share/virtualenvs/my_chaburah-AiCSV-sC/lib/python3.9/site-packages/django/db/backends/utils.py", line 89, in _execute
return self.cursor.execute(sql, params)
File "/Users/almoni/.local/share/virtualenvs/my_chaburah-AiCSV-sC/lib/python3.9/site-packages/django/db/utils.py", line 91, in __exit__
raise dj_exc_value.with_traceback(traceback) from exc_value
File "/Users/almoni/.local/share/virtualenvs/my_chaburah-AiCSV-sC/lib/python3.9/site-packages/django/db/backends/utils.py", line 89, in _execute
return self.cursor.execute(sql, params)
django.db.utils.ProgrammingError: column "birthday" does not exist
LINE 1: ..._account" ALTER COLUMN "birthday" TYPE date USING "birthday"...
It only appears when I try to either edit an existing User or create a new one.
models.py:
class Account(models.Model):
user = models.OneToOneField(User, on_delete=models.CASCADE)
birthday = models.DateTimeField(blank=True, null=True)
def __str__(self):
return self.user
admin.py:
class AccountInline(admin.StackedInline):
model = Account
can_delete = False
verbose_name_plural = 'Accounts'
class CustomUserAdmin(UserAdmin):
inlines = (AccountInline,)
admin.site.unregister(User)
admin.site.register(User, CustomUserAdmin)
My original guess was the error was due to the fact that my existing Users have no birthday but that doesn't explain why I can't create a new User. Which makes me think I am unaware of what the actual problem is.
I'm newish to django/SQl so I don't really understand the error itself.

Answer 1

You forgot about:
python manage.py makemigrations
# and/or
python manage.py migrate
If error still occurs - delete the database, create new and then run above commands. If got still same error - delete the database and all migration files and then run the commands.
PS You probably want DateField not DateTimeField for birthday storage :)