Fixed that validates_size_of :within works in associations (closes #11295, #10019) [cavalle]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@9129 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activerecord/CHANGELOG

@@ -1,5 +1,7 @@
 *SVN*
 
+* Fixed that validates_size_of :within works in associations #11295, #10019 [cavalle]
+
 * Track changes to unsaved attributes.  [Jeremy Kemper]
 
 * Switched to UTC-timebased version numbers for migrations and the schema. This will as good as eliminate the problem of multiple migrations getting the same version assigned in different branches. Also added rake db:migrate:up/down to apply individual migrations that may need to be run when you merge branches #11458 [jbarnette]

activerecord/lib/active_record/validations.rb

@@ -553,9 +553,10 @@ module ActiveRecord
             too_long  = options[:too_long]  % option_value.end
 
             validates_each(attrs, options) do |record, attr, value|
-              if value.nil? or value.split(//).size < option_value.begin
+              value = value.split(//) if value.kind_of?(String)
+              if value.nil? or value.size < option_value.begin
                 record.errors.add(attr, too_short)
-              elsif value.split(//).size > option_value.end
+              elsif value.size > option_value.end
                 record.errors.add(attr, too_long)
               end
             end
@@ -569,11 +570,8 @@ module ActiveRecord
             message = (options[:message] || options[message_options[option]]) % option_value
 
             validates_each(attrs, options) do |record, attr, value|
-              if value.kind_of?(String)
-                record.errors.add(attr, message) unless !value.nil? and value.split(//).size.method(validity_checks[option])[option_value]
-              else
-                record.errors.add(attr, message) unless !value.nil? and value.size.method(validity_checks[option])[option_value]
-              end
+              value = value.split(//) if value.kind_of?(String)
+              record.errors.add(attr, message) unless !value.nil? and value.size.method(validity_checks[option])[option_value]
             end
         end
       end

activerecord/test/cases/validations_test.rb

@@ -806,6 +806,20 @@ class ValidationsTest < ActiveRecord::TestCase
     reply = t.replies.build('title' => 'areply', 'content' => 'whateveragain')
     assert t.valid?
   end
+  
+  def test_validates_size_of_association_using_within
+    assert_nothing_raised { Topic.validates_size_of :replies, :within => 1..2 }
+    t = Topic.new('title' => 'noreplies', 'content' => 'whatever')
+    assert !t.save
+    assert t.errors.on(:replies)
+    
+    reply = t.replies.build('title' => 'areply', 'content' => 'whateveragain')
+    assert t.valid?
+    
+    2.times { t.replies.build('title' => 'areply', 'content' => 'whateveragain') }
+    assert !t.save
+    assert t.errors.on(:replies)
+  end
 
   def test_validates_length_of_nasty_params
     assert_raise(ArgumentError) { Topic.validates_length_of(:title, :minimum=>6, :maximum=>9) }