Question 1

How do I handle nested resources with JSONAPI::Utils?

Accepted Answer

Define nested routes using jsonapi_resources in config/routes.rb, then in controllers, load parent resources manually—like the posts controller example—and use jsonapi_render with appropriate options for includes and fields.

Question 2

JSONAPI::Utils vs JSONAPI::Resources: which one should I use?

Accepted Answer

JSONAPI::Utils is better if you want explicit controller logic with helpers for rendering and validation, while JSONAPI::Resources offers a more abstracted, resource-driven approach. Utils builds on Resources, so you'll need both for full functionality.

Question 3

Can I customize error responses in JSONAPI::Utils?

Accepted Answer

Yes, use jsonapi_render_errors with custom exception objects or hashes containing error details, as shown in the README. You can specify status codes and error structures to match your API's needs.

Question 4

How to implement authentication with JSONAPI::Utils?

Accepted Answer

Add authentication logic in controllers before actions, such as using before_action callbacks. Since the gem focuses on rendering and validation, you'll need to integrate auth gems like Devise or JWT separately.

Question 5

What are common performance bottlenecks with JSONAPI::Utils?

Accepted Answer

Performance can suffer from inefficient resource serialization via JSONAPI::Resources, especially with large datasets or complex includes. Mitigate by optimizing queries, using pagination, and limiting field selections.

Question 6

How to test APIs built using JSONAPI::Utils?

Accepted Answer

Write integration tests with tools like RSpec request specs, simulating JSON API requests and verifying responses for compliance. Mock or stub database calls to isolate controller logic as demonstrated in the full example.

JSONAPI::Utils

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