GraphQL Backend Tutorial with Phoenix & Absinthe

Welcome to this comprehensive tutorial on creating a GraphQL backend using the Phoenix framework and Absinthe. Tailored for educational purposes, this repository dives deep into various GraphQL concepts while utilizing Phoenix's robustness and Absinthe's flexibility.

Table of Contents

1. Introduction
2. Prerequisites
3. Setup and Installation
4. Tutorial Breakdown
5. Running the Server
6. Feedback and Contribution

Introduction

GraphQL provides a more efficient, flexible, and powerful alternative to the traditional REST API. With Phoenix's productive web framework and Absinthe's GraphQL toolkit, building scalable and maintainable APIs becomes a breeze.

Prerequisites

• Elixir and Erlang (Refer to the official documentation for installation)
• Phoenix Framework
• PostgreSQL (with necessary configurations)

Setup and Installation

1. Clone this repository to your local machine.
2. Navigate to the project directory.
3. Install dependencies with mix deps.get.
4. Create and migrate your database with mix ecto.setup.

Tutorial Breakdown

1. Schema Definition: Understand the importance and structure of schemas in GraphQL.
2. Basic Types: Dive into GraphQL's type system, ensuring your API's shape and nature are as expected.
3. Custom Types: Extend GraphQL's type capabilities for more complex structures.
4. Queries: Fetch data with specifically shaped requests tailored to your frontend needs.
5. Mutations: Learn how to modify server-side data using GraphQL.
6. Subscriptions: Enable real-time functionalities and understand GraphQL's subscription mechanism.
7. Custom Resolvers: Dive deeper into field-level logic encapsulation.
8. Dataloader: Optimize data loading from databases, APIs, or other data sources.

Each section in the tutorial comes with relevant code examples and explanations. Navigate to the respective folders or files for a deep dive into each topic.

Running the Server

1. Start the Phoenix server with mix phx.server.
2. Access the interactive GraphQL playground at localhost:4000/api/graphiql.

Feedback and Contribution

We welcome contributions, feedback, or issues. Feel free to submit a PR or drop an issue for any corrections, enhancements, or clarifications.

---

Happy Coding and Exploring GraphQL with Phoenix & Absinthe!