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* Added ActiveModel::Errors#added? to check if a specific error has been added [Martin Svalin]
* Add ability to define strict validation(with :strict => true option) that always raises exception when fails [Bogdan Gusiev]
* Deprecate "Model.model_name.partial_path" in favor of "model.to_partial_path" [Grant Hutchins, Peter Jaros]
* Provide mass_assignment_sanitizer as an easy API to replace the sanitizer behavior. Also support both :logger (default) and :strict sanitizer behavior [Bogdan Gusiev]
*Rails 3.1.0 (August 30, 2011)*
* Alternate I18n namespace lookup is no longer supported.
Instead of "activerecord.models.admins.post", do "activerecord.models.admins/post" instead [José Valim]
* attr_accessible and friends now accepts :as as option to specify a role [Josh Kalderimis]
* Add support for proc or lambda as an option for InclusionValidator,
ExclusionValidator, and FormatValidator [Prem Sichanugrist]
You can now supply Proc, lambda, or anything that respond to #call in those
validations, and it will be called with current record as an argument.
That given proc or lambda must returns an object which respond to #include? for
InclusionValidator and ExclusionValidator, and returns a regular expression
object for FormatValidator.
* Added ActiveModel::SecurePassword to encapsulate dead-simple password usage with BCrypt encryption and salting [DHH]
* ActiveModel::AttributeMethods allows attributes to be defined on demand [Alexander Uvarov]
* Add support for selectively enabling/disabling observers [Myron Marston]
*Rails 3.0.7 (April 18, 2011)*
*No changes.
*Rails 3.0.6 (April 5, 2011)
* Fix when database column name has some symbolic characters (e.g. Oracle CASE# VARCHAR2(20)) #5818 #6850 [Robert Pankowecki, Santiago Pastorino]
* Fix length validation for fixnums #6556 [Andriy Tyurnikov]
* Fix i18n key collision with namespaced models #6448 [yves.senn]
*Rails 3.0.5 (February 26, 2011)*
* No changes.
*Rails 3.0.4 (February 8, 2011)*
* No changes.
*Rails 3.0.3 (November 16, 2010)*
* No changes.
*Rails 3.0.2 (November 15, 2010)*
* No changes
*Rails 3.0.1 (October 15, 2010)*
* No Changes, just a version bump.
*Rails 3.0.0 (August 29, 2010)*
* Added ActiveModel::MassAssignmentSecurity [Eric Chapweske, Josh Kalderimis]
* JSON supports a custom root option: to_json(:root => 'custom') #4515 [Jatinder Singh]
* #new_record? and #destroyed? were removed from ActiveModel::Lint. Use
persisted? instead. A model is persisted if it's not a new_record? and it was
not destroyed? [MG]
* Added validations reflection in ActiveModel::Validations [JV]
Model.validators
Model.validators_on(:field)
* #to_key was added to ActiveModel::Lint so we can generate DOM IDs for
AMo objects with composite keys [MG]
* ActiveModel::Observer#add_observer!
It has a custom hook to define after_find that should really be in a
ActiveRecord::Observer subclass:
def add_observer!(klass)
klass.add_observer(self)
klass.class_eval 'def after_find() end' unless klass.respond_to?(:after_find)
end
* Change the ActiveModel::Base.include_root_in_json default to true for Rails 3 [DHH]
* Add validates_format_of :without => /regexp/ option. #430 [Elliot Winkler, Peer Allan]
Example :
validates_format_of :subdomain, :without => /www|admin|mail/
* Introduce validates_with to encapsulate attribute validations in a class. #2630 [Jeff Dean]
* Extracted from Active Record and Active Resource.
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