From 27ea0b527e172bbc8f8b68c39c8359ee0c77e435 Mon Sep 17 00:00:00 2001 From: David Heinemeier Hansson Date: Thu, 9 Dec 2004 14:37:37 +0000 Subject: Added Base.validate_confirmation that encapsulates the pattern of wanting to validate the acceptance of a terms of service check box (or similar agreement) git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@97 5ecf4fe2-1ee6-0310-87b1-e25e094e27de --- activerecord/lib/active_record/validations.rb | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'activerecord/lib/active_record') diff --git a/activerecord/lib/active_record/validations.rb b/activerecord/lib/active_record/validations.rb index 705cad20df..71cbb5a6e5 100755 --- a/activerecord/lib/active_record/validations.rb +++ b/activerecord/lib/active_record/validations.rb @@ -80,6 +80,29 @@ module ActiveRecord EOM end end + + + # Encapsulates the pattern of wanting to validate the acceptance of a terms of service check box (or similar agreement). Example: + # + # Model: + # class Person < ActiveRecord::Base + # validate_acceptance :terms_of_service + # end + # + # View: + # <%= check_box "person", "terms_of_service" %> + # + # The terms_of_service attribute is entirely virtual. It's only used for validation at the time of creation. No database column is needed. + # + # NOTE: The agreement is considered valid if it's set to the string "1". This makes it easy to relate it to an HTML checkbox. + def validate_acceptance(*attr_names) + for attr_name in attr_names + attr_accessor(attr_name) + class_eval <<-EOM + validate_on_create %{errors.add('#{attr_name}', "must be accepted") unless #{attr_name} == "1"} +EOM + end + end end # The validation process on save can be skipped by passing false. The regular Base#save method is -- cgit v1.2.3