Backend-Template/Config/DB/Models.py

from Config import db, app
import datetime

def connect_table_to_key(db, collection_name, foreign_keys):
    return db.relationship(collection_name, foreign_keys=foreign_keys)

class Users(db.Model):
    __tablename__ = 'Users'

    id = db.Column(db.Integer, primary_key=True)
    admin_id = db.Column(db.Integer, db.ForeignKey('Users.id'), nullable=True)
    email = db.Column(db.String(256), unique=True, nullable=False)
    password = db.Column(db.String(256), nullable=False)
    sign_up_date = db.Column(db.DateTime, nullable=False)
    archived = db.Column(db.Integer, nullable=False, default=0)
    name = db.Column(db.String(64), nullable=False)
    address = db.Column(db.String(256), nullable=False)
    profile_picture_path = db.Column(db.String(512), nullable=False)
    notification_token = db.Column(db.String(512), nullable=False, default="NA")

    Admin = connect_table_to_key(db, 'Users', foreign_keys=[admin_id])

    __struct__ = {
        "id" : "Number",
        "admin_id" : "Number",
        "email": "String",
        "password": "String",
        "sign_up_date": "String",
        "archived": "Number",
        "name": "String",
        "address": "String",
        "profile_picture_path": "String",
        "notification_token": "String"
    }
    __unique__ = ["id", "email"]