diff options
| -rw-r--r-- | activemodel/README | 23 | ||||
| -rw-r--r-- | activemodel/lib/active_model/validator.rb | 5 |
2 files changed, 26 insertions, 2 deletions
diff --git a/activemodel/README b/activemodel/README index d2b51e2390..cf103b8d6d 100644 --- a/activemodel/README +++ b/activemodel/README @@ -193,3 +193,26 @@ functionality from the following modules: {Learn more}[link:classes/ActiveModel/Validations.html] +* Make custom validators + + class Person + include ActiveModel::Validations + validates_with HasNameValidator + attr_accessor :name + end + + class HasNameValidator < ActiveModel::Validator + def validate(record) + record.errors[:name] = "must exist" if record.name.blank? + end + end + + p = ValidatorPerson.new + p.valid? #=> false + p.errors.full_messages #=> ["Name must exist"] + p.name = "Bob" + p.valid? #=> true + + {Learn more}[link:classes/ActiveModel/Validator.html] + +
\ No newline at end of file diff --git a/activemodel/lib/active_model/validator.rb b/activemodel/lib/active_model/validator.rb index 382a4cc98d..ad9729de00 100644 --- a/activemodel/lib/active_model/validator.rb +++ b/activemodel/lib/active_model/validator.rb @@ -1,5 +1,6 @@ module ActiveModel #:nodoc: - # A simple base class that can be used along with ActiveModel::Validations::ClassMethods.validates_with + # A simple base class that can be used along with + # +ActiveModel::Validations::ClassMethods.validates_with+ # # class Person # include ActiveModel::Validations @@ -28,7 +29,7 @@ module ActiveModel #:nodoc: # end # # class MyValidator < ActiveModel::Validator - # def validate + # def validate(record) # record # => The person instance being validated # options # => Any non-standard options passed to validates_with # end |