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[1.8.x] Fixed #24184 -- Prevented automatic soft-apply of migrations

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Previously Django only checked for the table name in CreateModel
operations in initial migrations and faked the migration automatically.
This led to various errors and unexpected behavior. The newly introduced
--fake-initial flag to the migrate command must be passed to get the
same behavior again. With this change Django will bail out in with a
"duplicate relation / table" error instead.

Thanks Carl Meyer and Tim Graham for the documentation update, report
and review.

Backport of f287bec583 from master
This commit is contained in:
Markus Holtermann
2015-02-12 12:48:28 +01:00
parent 4ba7d73f94
commit bd80fa6b0f
7 changed files with 130 additions and 23 deletions
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13
docs/ref/django-admin.txt
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@@ -775,6 +775,19 @@ be warned that using ``--fake`` runs the risk of putting the migration state
table into a state where manual recovery will be needed to make migrations
run correctly.
.. versionadded:: 1.8
.. django-admin-option:: --fake-initial
The ``--fake-initial`` option can be used to allow Django to skip an app's
initial migration if all database tables with the names of all models created
by all :class:`~django.db.migrations.operations.CreateModel` operations in that
migration already exist. This option is intended for use when first running
migrations against a database that preexisted the use of migrations. This
option does not, however, check for matching database schema beyond matching
table names and so is only safe to use if you are confident that your existing
schema matches what is recorded in your initial migration.
.. deprecated:: 1.8
The ``--list`` option has been moved to the :djadmin:`showmigrations`