Feat: Multiplayer sessions added using CRUD database.

business_objects/db_base.py

@@ -0,0 +1,65 @@
+"""
+Project:    PARTS Website
+Author:     Edward Middleton-Smith
+            Precision And Research Technology Systems Limited
+
+Technology: Business Objects
+Feature:    Database Base Business Objects
+
+Description:
+Abstract base class for database objects
+"""
+
+# internal
+# from helpers.DEPRECATED.helper_abc import Interface_ABC
+from extensions import db
+import lib.argument_validation as av
+# external
+from typing import ClassVar
+from abc import abstractmethod, ABCMeta
+from pydantic import BaseModel
+from sqlalchemy.ext.declarative import DeclarativeMeta
+# from flask_sqlalchemy import SQLAlchemy
+
+
+
+class SQLAlchemy_ABCMeta(db.Model.__class__, ABCMeta):
+    pass
+
+class SQLAlchemy_ABC(db.Model, metaclass=SQLAlchemy_ABCMeta):
+    __abstract__ = True
+    # id = db.Column(db.Integer, primary_key=True)
+    def __init__(self):
+        pass
+    def __repr__(self):
+        pass
+    def to_json(self):
+        pass
+    @classmethod
+    def from_json(cls, json):
+        pass
+    def to_temporary_record(self):
+        pass
+    def to_object_with_missing_attributes(self, excluded_attributes):
+        return {
+            column.name: getattr(self, column.name) 
+            for column in self.__table__.columns
+            if column.name not in excluded_attributes
+        }
+    
+
+class Get_Many_Parameters_Base(BaseModel, metaclass=ABCMeta):
+    # a_user_id: int
+    def __init__(self, **kwargs): # , a_user_id
+        super().__init__(**kwargs) # a_user_id=a_user_id, 
+    @classmethod
+    @abstractmethod
+    def get_default(cls): # , user_id
+        pass
+    @classmethod
+    @abstractmethod
+    def from_json(self):
+        pass
+    @abstractmethod
+    def to_json(self):
+        pass # return self.dict()