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Code Issues 32 Releases Wiki Activity

[1.7.x] Revert "Fixed #23474 -- Prevented migrating backwards from unapplying the wrong migrations."

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Backport of d7ab2cefb7 from master
This commit is contained in:
Tim Graham
2014-09-24 15:49:30 -04:00
parent 02aa3e30e9
commit d7b32d3120
6 changed files with 5 additions and 66 deletions
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14
django/db/migrations/executor.py
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@@ -36,15 +36,11 @@ class MigrationExecutor(object):
# If the migration is already applied, do backwards mode,
# otherwise do forwards mode.
elif target in applied:
app_label = target[0]
next_migration_prefix = str(int(target[1][:4]) + 1)
try:
next_migration = self.loader.get_migration_by_prefix(app_label, next_migration_prefix)
except KeyError:
# If `target` is the most recent one in its app, there is nothing to do.
pass
else:
backwards_plan = self.loader.graph.backwards_plan(next_migration)
backwards_plan = self.loader.graph.backwards_plan(target)[:-1]
# We only do this if the migration is not the most recent one
# in its app - that is, another migration with the same app
# label is in the backwards plan
if any(node[0] == target[0] for node in backwards_plan):
for migration in backwards_plan:
if migration in applied:
plan.append((self.loader.graph.nodes[migration], True))