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An attempt to move from migrate to alembic.

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This commit is contained in:
Raoul Snyman 2013-04-03 12:33:29 +02:00
parent 29d7b3411e
commit d42f64e044
1 changed files with 29 additions and 9 deletions
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38
openlp/plugins/songs/lib/upgrade.py
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@ -33,10 +33,18 @@ backend for the Songs plugin
from sqlalchemy import Column, Table, types from sqlalchemy import Column, Table, types
from sqlalchemy.sql.expression import func from sqlalchemy.sql.expression import func
from migrate.changeset.constraint import ForeignKeyConstraint #from migrate.changeset.constraint import ForeignKeyConstraint
from alembic.migration import MigrationContext
from alembic.operations import Operations
__version__ = 3 __version__ = 3
def get_alembic_operation(session):
context = MigrationContext(session.bind.connect())
return Operations(context)
def upgrade_setup(metadata): def upgrade_setup(metadata):
""" """
Set up the latest revision all tables, with reflection, needed for the Set up the latest revision all tables, with reflection, needed for the
@ -67,13 +75,20 @@ def upgrade_1(session, metadata, tables):
added to the media_files table, and a weight column so that the media added to the media_files table, and a weight column so that the media
files can be ordered. files can be ordered.
""" """
Table(u'media_files_songs', metadata, autoload=True).drop(checkfirst=True) #Table(u'media_files_songs', metadata, autoload=True).drop(checkfirst=True)
Column(u'song_id', types.Integer(), default=None).create(table=tables[u'media_files']) #Column(u'song_id', types.Integer(), default=None).create(table=tables[u'media_files'])
Column(u'weight', types.Integer(), default=0).create(table=tables[u'media_files']) #Column(u'weight', types.Integer(), default=0).create(table=tables[u'media_files'])
#if metadata.bind.url.get_dialect().name != 'sqlite':
# # SQLite doesn't support ALTER TABLE ADD CONSTRAINT
# ForeignKeyConstraint([u'song_id'], [u'songs.id'],
# table=tables[u'media_files']).create()
op = get_alembic_operation(session)
op.drop_table(u'media_files_songs')
op.add_column(u'media_files', Column(u'song_id', types.Integer(), default=None))
op.add_column(u'media_files', Column(u'weight', types.Integer(), default=0))
if metadata.bind.url.get_dialect().name != 'sqlite': if metadata.bind.url.get_dialect().name != 'sqlite':
# SQLite doesn't support ALTER TABLE ADD CONSTRAINT # SQLite doesn't support ALTER TABLE ADD CONSTRAINT
ForeignKeyConstraint([u'song_id'], [u'songs.id'], op.create_foreign_key(u'fk_media_files_song_id', u'media_files', u'songs', [u'song_id', u'id'])
table=tables[u'media_files']).create()
def upgrade_2(session, metadata, tables): def upgrade_2(session, metadata, tables):
@ -82,8 +97,11 @@ def upgrade_2(session, metadata, tables):
This upgrade adds a create_date and last_modified date to the songs table This upgrade adds a create_date and last_modified date to the songs table
""" """
Column(u'create_date', types.DateTime(), default=func.now()).create(table=tables[u'songs']) #Column(u'create_date', types.DateTime(), default=func.now()).create(table=tables[u'songs'])
Column(u'last_modified', types.DateTime(), default=func.now()).create(table=tables[u'songs']) #Column(u'last_modified', types.DateTime(), default=func.now()).create(table=tables[u'songs'])
op = get_alembic_operation(session)
op.add_column(u'songs', Column(u'create_date', types.DateTime(), default=func.now()))
op.add_column(u'songs', Column(u'last_modified', types.DateTime(), default=func.now()))
def upgrade_3(session, metadata, tables): def upgrade_3(session, metadata, tables):
@ -92,5 +110,7 @@ def upgrade_3(session, metadata, tables):
This upgrade adds a temporary song flag to the songs table This upgrade adds a temporary song flag to the songs table
""" """
Column(u'temporary', types.Boolean(), default=False).create(table=tables[u'songs']) #Column(u'temporary', types.Boolean(), default=False).create(table=tables[u'songs'])
op = get_alembic_operation(session)
op.add_column(u'songs', Column(u'temporary', types.Boolean(), default=False))