How do I handle error responses in a Rails API?

How do I handle error responses in a Rails API?

In a Rails API, you can handle error responses by using the rescue_from method in your controllers to catch exceptions.

Can you give me an example of how to implement that?

Sure! You can add something like this in your ApplicationController:

class ApplicationController < ActionController::API
  rescue_from ActiveRecord::RecordNotFound, with: :record_not_found

  private

  def record_not_found
    render json: { error: 'Record not found' }, status: :not_found
  end
end

What about custom error messages?

You can create custom error classes and handle them similarly. Just define your error class and rescue from it in the controller.

Thanks! How do I test these error responses?

You can use RSpec to write tests for your error responses by simulating requests that trigger the errors.