#db/models/Path.py from sqlalchemy import Column, String, Integer, ForeignKey, UniqueConstraint from db.models import Base class Path(Base): __tablename__ = "path" id = Column(Integer, primary_key=True, autoincrement=True) name = Column(String(50), nullable=False) parent_id = Column(Integer, ForeignKey("path.id"), nullable=True) __table_args__ = (UniqueConstraint("parent_id", "name", name="unique_parent_id_name"), ) def to_dict(self): return { "id": self.id, "name": self.name, "parent_id": self.parent_id, } __pay_load__ = { 'dev': [ {'id': 1, 'name': '', 'parent_id': None}, {'id': 2, 'name': 'test', 'parent_id': 1}, {'id': 3, 'name': 'test1', 'parent_id': 1}, ], 'prod': [ {'id': 1, 'name': '', 'parent_id': None}, ] }