Self-Referential Association Relationship SQLalchemy

Question

In my flask application with flask-sqlalchemy i need to create association between two contact here is my Contact model

class Contact(db.Model):         


        

Answer 1

Self-referential many-to-many relationship with Association Object.

User Class:

class User(Base):
    __tablename__ = "User"
    id = Column(String(36), primary_key=True, default=lambda : str(uuid1()))

Association Class:

class UserIgnore(Base):
    __tablename__ = "UserIgnore"
    id = Column(String(36), primary_key=True, default=lambda : str(uuid1()))

    ignored_by_id = Column("ignored_by_id", String(36), ForeignKey("User.id"), primary_key=True)
    ignored_by = relationship("User", backref="ignored_list",  primaryjoin=(User.id == ignored_by_id))
    ignored_id = Column("ignored_id", String(36), ForeignKey("User.id"), primary_key=True)
    ignored = relationship("User", backref="ignored_by_list",  primaryjoin=(User.id == ignored_id))

Access the relationship objects with

someUser.ignored_list

or

someUser.ignored_by_list

Thanks to Sean