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Elixir & Phoenix: Scalable Backend Development · Lesson

Implementing API Endpoints and Serialization

Build API endpoints, handle request and response bodies, and serialize data efficiently for client consumption.

API Endpoints: The Basics

Welcome! In this lesson, we'll build API endpoints in Phoenix. An API endpoint is a specific URL that an API client can access to perform an action or retrieve data.

Think of it as a digital address for a specific resource, like /api/products or /api/users/123. Each endpoint usually corresponds to an action (e.g., get all products, create a new user).

Scaffolding an API Resource

Phoenix provides a handy generator to quickly set up a RESTful API resource. We'll use mix phx.gen.json to create a Product resource.

This command generates:

  • A router entry
  • A controller (e.g., ProductController)
  • An Ecto schema (e.g., Product)
  • A view (e.g., ProductView) for JSON serialization

mix phx.gen.json Products Product products name:string description:text price:decimal

All lessons in this course

  1. API Design Principles and Best Practices
  2. Implementing API Endpoints and Serialization
  3. Authentication and Authorization Strategies
  4. Pagination, Filtering & API Versioning
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