"""private pull-request

Revision ID: 47f5fab6f46a

Revises: a13967424130

Create Date: 2017-11-06 11:37:57.460886

"""

from alembic import op

import sqlalchemy as sa

# revision identifiers, used by Alembic.

revision = '47f5fab6f46a'

down_revision = 'a13967424130'

def upgrade():

    ''' Add a private column in the pull_requests table

    '''

    op.add_column(

        'pull_requests',

        sa.Column('private', sa.Boolean, nullable=True, default=False)

    )

    op.execute('''UPDATE "pull_requests" '''

               '''SET private=False;''')

    op.alter_column(

        'pull_requests',

        column_name='private',

        nullable=False, existing_nullable=True)

def downgrade():

    ''' Remove the private column

    '''

    op.drop_column('pull_requests', 'private')