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"""Add ``description`` and ``default_view`` column to ``dag`` table

Revision ID: c8ffec048a3b
Revises: 41f5f12752f8
Create Date: 2018-12-23 21:55:46.463634

"""

import sqlalchemy as sa
from alembic import op

# revision identifiers, used by Alembic.
revision = 'c8ffec048a3b'
down_revision = '41f5f12752f8'
branch_labels = None
depends_on = None
airflow_version = '1.10.3'


def upgrade():
    op.add_column('dag', sa.Column('description', sa.Text(), nullable=True))
    op.add_column('dag', sa.Column('default_view', sa.String(25), nullable=True))


def downgrade():
    op.drop_column('dag', 'description')
    op.drop_column('dag', 'default_view')
