"""Add the pr_to_issue table

Revision ID: 369deb8c8b63

Revises: eab41ce5f92a

Create Date: 2018-03-12 11:38:00.955252

"""

# revision identifiers, used by Alembic.

revision = '369deb8c8b63'

down_revision = 'eab41ce5f92a'

from alembic import op

import sqlalchemy as sa

def upgrade():

    ''' Create the pr_to_issue table. '''

    op.create_table(

        'pr_to_issue',

        sa.Column(

            'pull_request_uid',

            sa.String(32),

            sa.ForeignKey(

                'pull_requests.uid', ondelete='CASCADE', onupdate='CASCADE',

            ),

            primary_key=True),

        sa.Column(

            'issue_uid',

            sa.String(32),

            sa.ForeignKey(

                'issues.uid', ondelete='CASCADE', onupdate='CASCADE',

            ),

            primary_key=True)

    )

def downgrade():

    ''' Drop the pr_to_issue table. '''

    op.drop_table('pr_to_issue')