SQLMIGRATION flask design thread date

db_repository/README

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+This is a database migration repository.
+
+More information at
+http://code.google.com/p/sqlalchemy-migrate/

db_repository/manage.py

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+#!.env/bin/python
+from migrate.versioning.shell import main
+import storage
+
+if __name__ == '__main__':
+    main(debug='False')

db_repository/migrate.cfg

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+[db_settings]
+# Used to identify which repository this database is versioned under.
+# You can use the name of your project.
+repository_id=service mail db repository
+
+# The name of the database table used to track the schema version.
+# This name shouldn't already be used by your project.
+# If this is changed once a database is under version control, you'll need to
+# change the table name in each database too.
+version_table=migrate_version
+
+# When committing a change script, Migrate will attempt to generate the
+# sql for all supported databases; normally, if one of them fails - probably
+# because you don't have that database installed - it is ignored and the
+# commit continues, perhaps ending successfully.
+# Databases in this list MUST compile successfully during a commit, or the
+# entire commit will fail. List the databases your application will actually
+# be using to ensure your updates to that database work properly.
+# This must be a list; example: ['postgres','sqlite']
+required_dbs=[]
+
+# When creating new change scripts, Migrate will stamp the new script with
+# a version number. By default this is latest_version + 1. You can set this
+# to 'true' to tell Migrate to use the UTC timestamp instead.
+use_timestamp_numbering=False

db_repository/storage

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+storage

db_repository/versions/002_add_date_to_threads.py

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+from sqlalchemy import *
+from migrate import *
+
+
+from migrate.changeset import schema
+pre_meta = MetaData()
+post_meta = MetaData()
+threads = Table('threads', post_meta,
+    Column('created_at', TIMESTAMP, nullable=False),
+    Column('updated_at', TIMESTAMP, nullable=False),
+    Column('id', Integer, primary_key=True, nullable=False),
+    Column('firstmail', Integer),
+    Column('date', DateTime),
+    Column('islabeled', Boolean),
+    Column('opened', Boolean),
+    Column('body', Text),
+)
+
+
+def upgrade(migrate_engine):
+    # Upgrade operations go here. Don't create your own engine; bind
+    # migrate_engine to your metadata
+    pre_meta.bind = migrate_engine
+    post_meta.bind = migrate_engine
+    post_meta.tables['threads'].columns['date'].create()
+
+
+def downgrade(migrate_engine):
+    # Operations to reverse the above upgrade go here.
+    pre_meta.bind = migrate_engine
+    post_meta.bind = migrate_engine
+    post_meta.tables['threads'].columns['date'].drop()
+

db_repository/versions/003_maintopic.py

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+from sqlalchemy import *
+from migrate import *
+
+
+from migrate.changeset import schema
+pre_meta = MetaData()
+post_meta = MetaData()
+threads = Table('threads', post_meta,
+    Column('created_at', TIMESTAMP, nullable=False),
+    Column('updated_at', TIMESTAMP, nullable=False),
+    Column('id', Integer, primary_key=True, nullable=False),
+    Column('firstmail', Integer),
+    Column('date', DateTime),
+    Column('islabeled', Boolean),
+    Column('opened', Boolean),
+    Column('body', Text),
+    Column('maintopic', String),
+)
+
+
+def upgrade(migrate_engine):
+    # Upgrade operations go here. Don't create your own engine; bind
+    # migrate_engine to your metadata
+    pre_meta.bind = migrate_engine
+    post_meta.bind = migrate_engine
+    post_meta.tables['threads'].columns['maintopic'].create()
+
+
+def downgrade(migrate_engine):
+    # Operations to reverse the above upgrade go here.
+    pre_meta.bind = migrate_engine
+    post_meta.bind = migrate_engine
+    post_meta.tables['threads'].columns['maintopic'].drop()
+