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49 lines
1.4 KiB
Python
49 lines
1.4 KiB
Python
"""Materializing permission
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Revision ID: c3a8f8611885
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Revises: 4fa88fe24e94
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Create Date: 2016-04-25 08:54:04.303859
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"""
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# revision identifiers, used by Alembic.
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revision = 'c3a8f8611885'
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down_revision = '4fa88fe24e94'
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from alembic import op
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import sqlalchemy as sa
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from caravel import db
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from sqlalchemy.ext.declarative import declarative_base
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from sqlalchemy import (
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Column, Integer, String, ForeignKey)
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Base = declarative_base()
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class Slice(Base):
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"""Declarative class to do query in upgrade"""
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__tablename__ = 'slices'
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id = Column(Integer, primary_key=True)
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slice_name = Column(String(250))
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druid_datasource_id = Column(Integer, ForeignKey('datasources.id'))
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table_id = Column(Integer, ForeignKey('tables.id'))
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perm = Column(String(2000))
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def upgrade():
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bind = op.get_bind()
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op.add_column('slices', sa.Column('perm', sa.String(length=2000), nullable=True))
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session = db.Session(bind=bind)
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# Use Slice class defined here instead of models.Slice
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for slc in session.query(Slice).all():
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if slc.datasource:
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slc.perm = slc.datasource.perm
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session.merge(slc)
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session.commit()
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db.session.close()
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def downgrade():
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# Use batch_alter_table because dropping columns is not supported in SQLite
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with op.batch_alter_table('slices') as batch_op:
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batch_op.drop_column('perm')
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