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author | José Valim <jose.valim@gmail.com> | 2009-10-20 22:20:01 -0200 |
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committer | Carl Lerche <carllerche@mac.com> | 2009-10-20 17:52:32 -0700 |
commit | e714b499cc1f7ebc84f8d0e96607b79e60f2828d (patch) | |
tree | a9725eb2101a56db366603ca849a3ed260b710d6 /activemodel/lib/active_model/validator.rb | |
parent | 4f6d6f7031a88b647814fc0154e6b69b636dc912 (diff) | |
download | rails-e714b499cc1f7ebc84f8d0e96607b79e60f2828d.tar.gz rails-e714b499cc1f7ebc84f8d0e96607b79e60f2828d.tar.bz2 rails-e714b499cc1f7ebc84f8d0e96607b79e60f2828d.zip |
Move validator, human_name and human_attribute_name to ActiveModel, remove deprecated error messages and add i18n_scope and lookup_ancestors.
Signed-off-by: Carl Lerche <carllerche@mac.com>
Diffstat (limited to 'activemodel/lib/active_model/validator.rb')
-rw-r--r-- | activemodel/lib/active_model/validator.rb | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/activemodel/lib/active_model/validator.rb b/activemodel/lib/active_model/validator.rb new file mode 100644 index 0000000000..09de72b757 --- /dev/null +++ b/activemodel/lib/active_model/validator.rb @@ -0,0 +1,68 @@ +module ActiveModel #:nodoc: + + # A simple base class that can be used along with ActiveModel::Base.validates_with + # + # class Person < ActiveModel::Base + # validates_with MyValidator + # end + # + # class MyValidator < ActiveModel::Validator + # def validate + # if some_complex_logic + # record.errors[:base] = "This record is invalid" + # end + # end + # + # private + # def some_complex_logic + # # ... + # end + # end + # + # Any class that inherits from ActiveModel::Validator will have access to <tt>record</tt>, + # which is an instance of the record being validated, and must implement a method called <tt>validate</tt>. + # + # class Person < ActiveModel::Base + # validates_with MyValidator + # end + # + # class MyValidator < ActiveModel::Validator + # def validate + # record # => The person instance being validated + # options # => Any non-standard options passed to validates_with + # end + # end + # + # To cause a validation error, you must add to the <tt>record<tt>'s errors directly + # from within the validators message + # + # class MyValidator < ActiveModel::Validator + # def validate + # record.errors[:base] << "This is some custom error message" + # record.errors[:first_name] << "This is some complex validation" + # # etc... + # end + # end + # + # To add behavior to the initialize method, use the following signature: + # + # class MyValidator < ActiveModel::Validator + # def initialize(record, options) + # super + # @my_custom_field = options[:field_name] || :first_name + # end + # end + # + class Validator + attr_reader :record, :options + + def initialize(record, options) + @record = record + @options = options + end + + def validate + raise "You must override this method" + end + end +end |