"""Add the milestones column

Revision ID: 2aa7b3958bc5

Revises: 443e090da188

Create Date: 2016-05-03 15:59:04.992414

"""

# revision identifiers, used by Alembic.

revision = '2aa7b3958bc5'

down_revision = '443e090da188'

from alembic import op

import sqlalchemy as sa

def upgrade():

    ''' Add the column _milestones to the table projects

    and the column milestone to the table issues.

    '''

    op.add_column(

        'projects',

        sa.Column('_milestones', sa.Text, nullable=True)

    )

def downgrade():

    ''' Drop the column _milestones from the table projects

    and the column milestone from the table issues.

    '''

    op.drop_column('projects', '_milestones')