"""update_project_history

Revision ID: eac75edb274a
Revises: a39ddf0fb0a8
Create Date: 2020-07-24 11:37:22.716909

"""
from alembic import op
import sqlalchemy as sa
from sqlalchemy.dialects import postgresql

# revision identifiers, used by Alembic.
revision = 'eac75edb274a'
down_revision = 'a39ddf0fb0a8'
branch_labels = None
depends_on = None


def upgrade():
    # ### commands auto generated by Alembic - please adjust! ###
    op.alter_column('ProjectHistoryItem', 'project_id', nullable=True)
    op.add_column('ProjectHistoryItem', sa.Column('gras_project_id', sa.BigInteger(), nullable=True))
    op.create_foreign_key(op.f('fk_ProjectHistoryItem_gras_project_id_GRASProject'), 'ProjectHistoryItem', 'GRASProject', ['gras_project_id'], ['id'], ondelete='CASCADE')
    # ### end Alembic commands ###


def downgrade():
    # ### commands auto generated by Alembic - please adjust! ###
    op.alter_column('ProjectHistoryItem', 'project_id', nullable=False)
    op.drop_column('ProjectHistoryItem', 'gras_project_id')
    # ### end Alembic commands ###