superset/migrations/versions/27ae655e4247_make_creator_owners.py

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# to you under the Apache License, Version 2.0 (the
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#
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"""Make creator owners

Revision ID: 27ae655e4247
Revises: d8bc074f7aad
Create Date: 2016-06-27 08:43:52.592242

"""

# revision identifiers, used by Alembic.
revision = "27ae655e4247"
down_revision = "d8bc074f7aad"

from alembic import op
from flask import g
from flask_appbuilder import Model
from sqlalchemy import Column, ForeignKey, Integer, Table
from sqlalchemy.ext.declarative import declarative_base, declared_attr
from sqlalchemy.orm import relationship

from superset import db

Base = declarative_base()


class User(Base):
    """Declarative class to do query in upgrade"""

    __tablename__ = "ab_user"
    id = Column(Integer, primary_key=True)


slice_user = Table(
    "slice_user",
    Base.metadata,
    Column("id", Integer, primary_key=True),
    Column("user_id", Integer, ForeignKey("ab_user.id")),
    Column("slice_id", Integer, ForeignKey("slices.id")),
)

dashboard_user = Table(
    "dashboard_user",
    Base.metadata,
    Column("id", Integer, primary_key=True),
    Column("user_id", Integer, ForeignKey("ab_user.id")),
    Column("dashboard_id", Integer, ForeignKey("dashboards.id")),
)


class AuditMixin:
    @classmethod
    def get_user_id(cls):
        try:
            return g.user.id
        except Exception:
            return None

    @declared_attr
    def created_by_fk(cls):
        return Column(
            Integer, ForeignKey("ab_user.id"), default=cls.get_user_id, nullable=False
        )

    @declared_attr
    def created_by(cls):
        return relationship(
            "User",
            primaryjoin="%s.created_by_fk == User.id" % cls.__name__,
            enable_typechecks=False,
        )


class Slice(Base, AuditMixin):
    """Declarative class to do query in upgrade"""

    __tablename__ = "slices"
    id = Column(Integer, primary_key=True)
    owners = relationship("User", secondary=slice_user)


class Dashboard(Base, AuditMixin):
    """Declarative class to do query in upgrade"""

    __tablename__ = "dashboards"
    id = Column(Integer, primary_key=True)
    owners = relationship("User", secondary=dashboard_user)


def upgrade():
    bind = op.get_bind()
    session = db.Session(bind=bind)

    objects = session.query(Slice).all()
    objects += session.query(Dashboard).all()
    for obj in objects:
        if obj.created_by and obj.created_by not in obj.owners:
            obj.owners.append(obj.created_by)
        session.commit()
    session.close()


def downgrade():
    pass