"""adding tag handling capacities

Revision ID: 2c5cc05216fa
Revises: be2b8b6f33dd
Create Date: 2016-11-08 07:41:13.923531

"""

# revision identifiers, used by Alembic.
revision = '2c5cc05216fa'
down_revision = 'be2b8b6f33dd'
branch_labels = None
depends_on = None

from alembic import op
import sqlalchemy as sa


def upgrade():
    op.create_table('tag',
            sa.Column('text', sa.String(), nullable=False),
            sa.Column('article_id', sa.Integer(), nullable=False),
            sa.ForeignKeyConstraint(['article_id'], ['article.id'],
                                    ondelete='CASCADE'),
            sa.PrimaryKeyConstraint('text', 'article_id')
    )


def downgrade():
    op.drop_table('tag')