"""empty message

Revision ID: 4e4a759ac4b5
Revises: dbd80d290f04
Create Date: 2020-03-20 12:12:45.699045

"""
import sqlalchemy_utils
from alembic import op
import sqlalchemy as sa


# revision identifiers, used by Alembic.
revision = '4e4a759ac4b5'
down_revision = 'dbd80d290f04'
branch_labels = None
depends_on = None


def upgrade():
    # ### commands auto generated by Alembic - please adjust! ###
    op.add_column('alias_used_on', sa.Column('user_id', sa.Integer(), nullable=True))
    op.create_foreign_key(None, 'alias_used_on', 'users', ['user_id'], ['id'], ondelete='cascade')
    # ### end Alembic commands ###


def downgrade():
    # ### commands auto generated by Alembic - please adjust! ###
    op.drop_constraint(None, 'alias_used_on', type_='foreignkey')
    op.drop_column('alias_used_on', 'user_id')
    # ### end Alembic commands ###