How to erase previously set one-time default value - django

Question

In my django app, I had to set a one-time default value for one of the fields when I tried to migrate.
When I did this, however, I accidentally set a wrong value. Ever since then, the same error pops up when I try to migrate:
ValueError: invalid literal for int() with base 10: '123e4567-e89b-12d3-a456-426655440000'
This is despite the fact that I rectified the issue in my code - it seems like this issue is stuck forever. Anything I can do to fix this?
Traceback:
File "manage.py", line 21, in <module>
main()
File "manage.py", line 17, in main
execute_from_command_line(sys.argv)
File "/app/.heroku/python/lib/python3.6/site-packages/django/core/management/__init__.py", line 381, in execute_from_command_line
utility.execute()
File "/app/.heroku/python/lib/python3.6/site-packages/django/core/management/__init__.py", line 375, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/app/.heroku/python/lib/python3.6/site-packages/django/core/management/base.py", line 323, in run_from_argv
self.execute(*args, **cmd_options)
File "/app/.heroku/python/lib/python3.6/site-packages/django/core/management/base.py", line 364, in execute
output = self.handle(*args, **options)
File "/app/.heroku/python/lib/python3.6/site-packages/django/core/management/base.py", line 83, in wrapped
res = handle_func(*args, **kwargs)
File "/app/.heroku/python/lib/python3.6/site-packages/django/core/management/commands/migrate.py", line 234, in handle
fake_initial=fake_initial,
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/migrations/executor.py", line 117, in migrate
state = self._migrate_all_forwards(state, plan, full_plan, fake=fake, fake_initial=fake_initial)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/migrations/executor.py", line 147, in _migrate_all_forwards
state = self.apply_migration(state, migration, fake=fake, fake_initial=fake_initial)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/migrations/executor.py", line 245, in apply_migration
state = migration.apply(state, schema_editor)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/migrations/migration.py", line 124, in apply
operation.database_forwards(self.app_label, schema_editor, old_state, project_state)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/migrations/operations/fields.py", line 112, in database_forwards
field,
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/backends/base/schema.py", line 433, in add_field
definition, params = self.column_sql(model, field, include_default=True)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/backends/base/schema.py", line 161, in column_sql
default_value = self.effective_default(field)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/backends/base/schema.py", line 233, in effective_default
return field.get_db_prep_save(self._effective_default(field), self.connection)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/fields/__init__.py", line 789, in get_db_prep_save
return self.get_db_prep_value(value, connection=connection, prepared=False)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/fields/__init__.py", line 959, in get_db_prep_value
value = self.get_prep_value(value)
File "/app/.heroku/python/lib/python3.6/site-packages/django/db/models/fields/__init__.py", line 968, in get_prep_value
return int(value)
ValueError: invalid literal for int() with base 10: '123e4567-e89b-12d3-a456-426655440000'

Answer 1

The wrong default is probably still present in your migration file.
If you have not applied this migration yet, you can just delete it and recreate it with python manage.py migrate.