Adding error messages in custom Rails validate methods
If you've ever needed custom validators in Rails, this is what you need in your methods when something doesn't pass a validation:
errors.add(:base, 'A star count score must be within the range of 0 to 5.')
This will add that error message to
object.errorsIf you tweak it slightly to this, it becomes more extensible:
errors.add(:star_count, 'score must be within the range of 0 to 5.')
You can call
object.errors.full_messages.each do |message| and it will basically output this: “#{:star_count.to_s.capitalize} score must be within the range of 0 to 5.”