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Source code for galaxy.model.migrate.versions.0024_page_slug_unique_constraint
"""
Remove unique constraint from page slugs to allow creating a page with
the same slug as a deleted page.
"""
import logging
from sqlalchemy import (
MetaData,
Table
)
from galaxy.model.migrate.versions.util import (
add_index,
drop_index
)
log = logging.getLogger(__name__)
metadata = MetaData()
[docs]def upgrade(migrate_engine):
print(__doc__)
metadata.bind = migrate_engine
metadata.reflect()
Page_table = Table("page", metadata, autoload=True)
try:
# Sqlite doesn't support .alter, so we need to drop an recreate
drop_index("ix_page_slug", Page_table, 'slug')
add_index("ix_page_slug", Page_table, 'slug', unique=False)
except Exception:
# Mysql doesn't have a named index, but alter should work
Page_table.c.slug.alter(unique=False)