How to rescue model transaction and show the user an error?
def exchange_status_with(address) ActiveRecord::Base.transaction do self.save! address.save! endrescue ActiveRecord::RecordInvalid => exception # do something with exception hereendFYI, an exception looks like:
#<ActiveRecord::RecordInvalid: Validation failed: Email can't be blank>And:
exception.message# => "Validation failed: Email can't be blank"Side note, you can change self.save! to save!
Alternate solution if you want to keep your active model errors:
class MyCustomErrorClass < StandardError; enddef exchange_status_with(address) ActiveRecord::Base.transaction do raise MyCustomErrorClass unless self.save raise MyCustomErrorClass unless address.save endrescue MyCustomErrorClass # here you have to check self.errors OR address.errorsend