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Explain about sqlite dropping the constraint and why we're adding it back manually.

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This commit is contained in:
Christopher Allan Webber 2013-06-25 17:12:33 -05:00
parent 6174169786
commit 15db183151
1 changed files with 2 additions and 0 deletions
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mediagoblin/db/migrations.py
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@ -371,6 +371,8 @@ def pw_hash_nullable(db):
user_table.c.pw_hash.alter(nullable=True) user_table.c.pw_hash.alter(nullable=True)
# sqlite+sqlalchemy seems to drop this constraint during the
# migration, so we add it back here for now a bit manually.
if db.bind.url.drivername == 'sqlite': if db.bind.url.drivername == 'sqlite':
constraint = UniqueConstraint('username', table=user_table) constraint = UniqueConstraint('username', table=user_table)
constraint.create() constraint.create()