How can I customize error messages in Rails?

How can I customize error messages in Rails?

You can customize error messages in Rails by using the errors.add method in your model validations.

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

Sure! In your model, you can add a custom message like this: validates :name, presence: { message: 'must be provided' }.

What if I want to customize messages for multiple validations?

You can specify different messages for each validation by adding them individually, like this: validates :email, presence: { message: 'is required' }, uniqueness: { message: 'must be unique' }.

Is there a way to use I18n for error messages?

Yes! You can define your custom messages in the locale files and use them in your validations like this: validates :name, presence: true, message: :custom_name_error.