"""add due date to tasks

Revision ID: 17946e7038d7
Revises: 719f2d1539c8
Create Date: 2020-05-21 10:49:26.110397

"""
from alembic import op
import sqlalchemy as sa


# revision identifiers, used by Alembic.
revision = '17946e7038d7'
down_revision = '719f2d1539c8'
branch_labels = None
depends_on = None


def upgrade():
    op.add_column(
        'tasks',
        sa.Column(
            'due_at',
            sa.DateTime,
            nullable=True
        )
    )


def downgrade():
    with op.batch_alter_table('tasks') as tasks:
        tasks.drop_column('due_at')