app/migrations/versions/2021_082012_424808e1fe49_.py

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"""empty message
Revision ID: 424808e1fe49
Revises: d4392342465f
Create Date: 2021-08-20 12:11:57.901994
"""
import sqlalchemy_utils
from alembic import op
import sqlalchemy as sa
from psycopg2 import errors
from psycopg2.errorcodes import DUPLICATE_OBJECT
# revision identifiers, used by Alembic.
revision = '424808e1fe49'
down_revision = 'd4392342465f'
branch_labels = None
depends_on = None
def upgrade():
# ### commands auto generated by Alembic - please adjust! ###
try:
op.execute('CREATE EXTENSION pg_trgm')
# thanks to https://stackoverflow.com/a/58743364/1428034 !
except sa.exc.ProgrammingError as e:
if isinstance(e.orig, errors.lookup(DUPLICATE_OBJECT)):
print(">>> pg_trgm already loaded, ignore")
op.execute("Rollback")
op.create_index('note_pg_trgm_index', 'alias', ['note'], unique=False, postgresql_ops={'note': 'gin_trgm_ops'}, postgresql_using='gin')
# ### end Alembic commands ###
def downgrade():
# ### commands auto generated by Alembic - please adjust! ###
op.drop_index('note_pg_trgm_index', table_name='alias')
op.execute('DROP EXTENSION pg_trgm')
# ### end Alembic commands ###