flaskbb/migrations/05da2ac3bd49_add_hidden_fields_and_permission.py

"""Add hidden fields and permission

Revision ID: 05da2ac3bd49
Revises: 331500ad355b
Create Date: 2017-09-03 21:48:30.850960

"""
import sqlalchemy as sa
from alembic import op

# revision identifiers, used by Alembic.
revision = '05da2ac3bd49'
down_revision = '331500ad355b'
branch_labels = ()
depends_on = None


def upgrade():
    # ### commands auto generated by Alembic - please adjust! ###
    with op.batch_alter_table('groups', schema=None) as batch_op:
        batch_op.add_column(
            sa.Column('viewhidden', sa.Boolean(), nullable=True)
        )

    with op.batch_alter_table('groups', schema=None) as batch_op:
        groups = sa.sql.table(
            'groups',
            sa.sql.column('viewhidden'),
            sa.sql.column('admin'), sa.sql.column('super_mod'), sa.sql.column('mod')
        )
        batch_op.execute(
            groups.update().where(
                sa.or_(
                    groups.c.admin == True,
                    groups.c.mod == True,
                    groups.c.super_mod == True
                )
            ).values(viewhidden=True)
        )
        batch_op.execute(
            groups.update().where(sa.and_(
                groups.c.admin != True,
                groups.c.mod != True,
                groups.c.super_mod != True
            )).values(viewhidden=False)
        )

        batch_op.alter_column('viewhidden', existing_type=sa.Boolean(), nullable=False)
    # ### end Alembic commands ###


def downgrade():
    # ### commands auto generated by Alembic - please adjust! ###
    with op.batch_alter_table('groups', schema=None) as batch_op:
        batch_op.drop_column('viewhidden')

    # ### end Alembic commands ###