Fixed validates_numericality_of to work with overrided getter-method when :allow_nil is on #1316 [raidel@onemail.at]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@1603 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

Author: David Heinemeier Hansson

activerecord/CHANGELOG

@@ -1,5 +1,7 @@
 *SVN*
 
+* Fixed validates_numericality_of to work with overrided getter-method when :allow_nil is on #1316 [raidel@onemail.at]
+
 * Added roots, root, and siblings to the batch of methods added by acts_as_tree #1541 [michael@schuerig.de]
 
 * Added support for limit/offset with the MS SQL Server driver so that pagination will now work #1569 [DeLynn Berry]

activerecord/lib/active_record/validations.rb

@@ -619,6 +619,7 @@ def validates_numericality_of(*attr_names)
           end
         else
           validates_each(attr_names,configuration) do |record, attr_name,value|
+           next if configuration[:allow_nil] and record.send("#{attr_name}_before_type_cast").nil?
             begin
               Kernel.Float(record.send("#{attr_name}_before_type_cast").to_s)
             rescue ArgumentError, TypeError

activerecord/test/validations_test.rb

@@ -319,6 +319,13 @@ def test_validates_inclusion_of_with_allow_nil
     assert Topic.create("title" => nil, "content" => "abc").valid?
   end
 
+  def test_numericality_with_allow_nil_and_getter_method
+    Developer.validates_numericality_of( :salary, :allow_nil => true)
+    developer = Developer.new("name" => "michael", "salary" => nil)
+    developer.instance_eval("def salary; read_attribute('salary') ? read_attribute('salary') : 100000; end")
+    assert developer.valid?
+  end
+
   def test_validates_exclusion_of
     Topic.validates_exclusion_of( :title, :in => %w( abe monkey ) )