How can I handle errors in a Ruby on Rails API?

How can I handle errors in a Ruby on Rails API?

In Ruby on Rails, you can handle errors by using rescue blocks in your controllers or by implementing custom error handling middleware.

Can you give me an example of using a rescue block?

Sure! You can wrap your code in a rescue block like this:

def show
  @record = Model.find(params[:id])
rescue ActiveRecord::RecordNotFound
  render json: { error: 'Record not found' }, status: :not_found
end

What about handling validation errors?

For validation errors, you can check if the model is valid before saving and return the errors:

if @model.save
  render json: @model
else
  render json: { errors: @model.errors.full_messages }, status: :unprocessable_entity
end

How can I log these errors for debugging?

You can use Rails' built-in logger. For example, in your rescue block, you can log the error like this:

logger.error('Error occurred: #{e.message}')