Duwin

This is the Graph API for the Duwin e-library project for Teacher Su Centre. This is written using Django and graphene-django frameworks. The web, desktop and mobile clients, developed by my amazing tech team at teachersucenter.com, can be found here.

Frontend Clients

website	https://github.com/teachersucenter/duwin_web
desktop	https://github.com/teachersucenter/duwin-desktop
mobile	https://github.com/teachersucenter/duwin_mobile

Factory architecture?

I don't really know what a factory design pattern is. But, reading this will help a lot while exploring the codes in core/serializers and core/schemas.

I have taken an experimental (for me) approach in defining serializers and mutations such that they are dynamically generated from models (actually, also for ObjectTypes as well, but for documentary purposes, I defined them manually (maybe will fix later)).

Motivation

The Duwin project is very simple. The scopes are defined well. Thus, I wanted to take a different approach in the architecture. The motivation behind the Duwin source code is to write as little code as possible.

Inheritance & Polymorphism

In order to achieve the goal of writing as little code as possible, polymorphism and inheritance concepts were heavily used. Most classes are defined using the type() function and dynamically generated during runtime. This makes debugging from extremely difficult to downright impossible, and reading the code becomes a living hell for an unfamiliar programmer.

Django-inspired

In contrast to the above topic, since everything becomes dynamic, the codes are extremely short, it's very easy to refactor and the logic still in a single place.

A popular design pattern (more like a mindset) for Django developers (https://www.dabapps.com/blog/django-models-and-encapsulation) called "Fat models, thin views" is a way of organising codes in such a way that everything can be controlled in one place. The Duwin codebase is heavily inspired by this.

References and other materials

These are some external sources that you could look into to gain more understanding about the Duwin project, about GraphQL and Django itself.

Authentication

Setting up the JWT authentication that is compatible with both REST and GraphQL APIs.

https://asvrada.github.io/blog/django-graphql-jwt/