discourse/lib/has_errors.rb

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# Helper functions for dealing with errors and objects that have
# child objects with errors
module HasErrors
def errors
@errors ||= ActiveModel::Errors.new(self)
end
def validate_child(obj)
return true if obj.valid?
add_errors_from(obj)
false
end
def rollback_with!(obj, error)
obj.errors.add(:base, error)
rollback_from_errors!(obj)
end
def rollback_from_errors!(obj)
add_errors_from(obj)
raise ActiveRecord::Rollback.new
end
def add_errors_from(obj)
obj.errors.full_messages.each do |msg|
errors[:base] << msg unless errors[:base].include?(msg)
end
end
end