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"""changed the type of the column 'last_modified' to string.
Revision ID: 17dcb75f3fe
Revises: cde34831ea
Create Date: 2015-03-10 14:20:53.676344
"""
# revision identifiers, used by Alembic.
revision = '17dcb75f3fe'
down_revision = 'cde34831ea'
from alembic import op
import sqlalchemy as sa
from datetime import datetime
def upgrade():
unix_start = datetime(1970, 1, 1)
op.drop_column('feed', 'last_modified')
op.add_column('feed', sa.Column('last_modified', sa.String(),
nullable=True, default=unix_start, server_default=str(unix_start)))
def downgrade():
unix_start = datetime(1970, 1, 1)
op.drop_column('feed', 'last_modified')
op.add_column('feed', sa.Column('last_modified', sa.DateTime(),
nullable=True, default=unix_start, server_default=unix_start))
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