models.py

from database import Base
from flask_security import UserMixin, RoleMixin
from sqlalchemy import create_engine
from sqlalchemy.orm import relationship, backref
from sqlalchemy import Boolean, Column, DateTime, ForeignKey, Integer, String


class RolesUsers(Base):
    __tablename__ = "roles_users"
    id = Column(Integer(), primary_key=True)
    user_id = Column("user_id", Integer(), ForeignKey("user.id"))
    role_id = Column("role_id", Integer(), ForeignKey("role.id"))


class Role(Base, RoleMixin):
    __tablename__ = "role"
    id = Column(Integer(), primary_key=True)
    name = Column(String(80), unique=True)
    description = Column(String(255))


class User(Base, UserMixin):
    __tablename__ = "user"
    id = Column(Integer, primary_key=True)
    email = Column(String(255), unique=True)
    username = Column(String(255))
    password = Column(String(255))
    last_login_at = Column(DateTime())
    current_login_at = Column(DateTime())
    last_login_ip = Column(String(100))
    current_login_ip = Column(String(100))
    login_count = Column(Integer)
    active = Column(Boolean())
    confirmed_at = Column(DateTime())
    roles = relationship("Role", secondary="roles_users", backref=backref("users", lazy="dynamic"))