Django unable to migrate database on Heroku

Question

I try to deploy app on Heroku but after running command 'heroku run python manage.py migrate' I get an error:

 Running `python manage.py migrate` attached to terminal... up, run.5928
Traceback (most recent call last):
  File "manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/app/.heroku/python/lib/python2.7/site-packages/django/core/management/__init__.py", line 385, in execute_from_command_line
    utility.execute()
  File "/app/.heroku/python/lib/python2.7/site-packages/django/core/management/__init__.py", line 377, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/app/.heroku/python/lib/python2.7/site-packages/django/core/management/base.py", line 288, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "/app/.heroku/python/lib/python2.7/site-packages/django/core/management/base.py", line 338, in execute
    output = self.handle(*args, **options)
  File "/app/.heroku/python/lib/python2.7/site-packages/django/core/management/commands/migrate.py", line 63, in handle
    executor = MigrationExecutor(connection, self.migration_progress_callback)
  File "/app/.heroku/python/lib/python2.7/site-packages/django/db/migrations/executor.py", line 17, in __init__
    self.loader = MigrationLoader(self.connection)
  File "/app/.heroku/python/lib/python2.7/site-packages/django/db/migrations/loader.py", line 48, in __init__
    self.build_graph()
  File "/app/.heroku/python/lib/python2.7/site-packages/django/db/migrations/loader.py", line 173, in build_graph
    self.load_disk()
  File "/app/.heroku/python/lib/python2.7/site-packages/django/db/migrations/loader.py", line 103, in load_disk
    migration_module = import_module("%s.%s" % (module_name, migration_name))
  File "/app/.heroku/python/lib/python2.7/importlib/__init__.py", line 37, in import_module
    __import__(name)
  File "/app/joins/migrations/0004_auto_20150211_1924.py", line 7, in <module>
    class Migration(migrations.Migration):
  File "/app/joins/migrations/0004_auto_20150211_1924.py", line 18, in Migration
    preserve_default=True,
TypeError: __init__() got an unexpected keyword argument 'preserve_default'

Do you have any suggestion?

Thanks! I use Django 1.7.2 in project but in requirements.txt I had just Django 1.7. So probably that was a problem. — Marcin12, Mar 14 '15 at 20:33

score 0 · Answer 1 · edited May 23 '17 at 11:50

0

You can try to see this :

Django 1.7.1 added support for the preserve_default param in AlterField. Therefore an upgrade of Django from version 1.7 will resolve the issue. pip install django --upgrade python manage.py migrate

From : Django 1.7 Migrations

.

edited May 23 '17 at 11:50

Community

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answered Mar 14 '15 at 17:24

Matei

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Django unable to migrate database on Heroku

1 Answers1