The task for this take-home test was to:

• Use Django REST Framework to create a simple todo list, using a serializer and creating views to handle CRUD operations.
• Implement a GraphQL API using Graphene Django for the todo list (optional).
• Create a frontend for the Django Rest Framework API using Create React App, with a component to display the todo list items, and allow updating of the completion status directly from the component.
• Integrate Apollo Client into the frontend to fetch and manage data from the GraphQL API implemented in Django (optional).
• Handle errors gracefully, providing meaningful feedback; focus on functionality rather than complex styling; use appropriate naming conventions and best practices.

• Django REST Framework has been implemented on the backend, with a serializer and a ModelViewSet for the todos.
• There are some tests for the Django REST Framework todos app in server/todos/tests.py.
• The backend also includes a GraphQL implementation using Graphene Django.
• The frontend has two components (one for REST Framework, and one for Apollo Client) that can be toggled using a button.
• The styling is very basic, with a focus on functionality.

• The GraphQL query is refetched each time a todo is added/edited, it would be better to update the Apollo Client Cache than refresh each time.
• Authentication could be implemented via REST Framework TokenAuthentication or SessionAuthentication; then the app modified so a user only sees their own todos.
• The styling could be improved via TailwindCSS or a similar CSS library/framework.

In the 'server' directory, create a virtual environment:

python3 -m venv env

Activate the virtual environment:

source env/bin/activate

Install the backend dependencies:

pip install -r requirements.txt 

Migrate the database for todos app:

python3 manage.py migrate todos

In the 'client' directory install the frontend dependencies:

npm install

To run the backend tests, in the 'server' directory run:

./manage.py test

To run the server, in the 'server' directory run:

python3 manage.py runserver

To run the client, in the 'client' directory run:

npm start

The backend Django REST Framework API is accessible at: http://localhost:8080/api/ The backend GraphQL API is accessible at: http://localhost:8080/graphql The frontend React app is accessible at: http://localhost:3000