"""add_uniq_constraint_to_gras_project_artist

Revision ID: 7f20f7366fb9
Revises: 66b1d16db276
Create Date: 2021-03-15 11:41:20.931759

"""
from alembic import op
import sqlalchemy as sa


# revision identifiers, used by Alembic.
revision = '7f20f7366fb9'
down_revision = '81ba9760458d'
branch_labels = None
depends_on = None


def upgrade():
    op.create_unique_constraint(
        op.f('uq_GRASProjectArtist_gras_project_id_artist_id'),  'GRASProjectArtist', ['gras_project_id', 'artist_id']
    )


def downgrade():
    op.drop_constraint(op.f('uq_GRASProjectArtist_gras_project_id_artist_id'), 'GRASProjectArtist', type_='unique')