make sure query attributes on custom fields works as it used to

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@5807 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activerecord/lib/active_record/base.rb

@@ -1978,7 +1978,13 @@ def query_attribute(attr_name)
           false
         else
           column = self.class.columns_hash[attr_name]
-          if column.number?
+          if column.nil?
+            if value !~ /[^0-9]/
+              !value.to_i.zero?
+            else
+              !value.blank?
+            end
+          elsif column.number?
             !value.zero?
           else
             !value.blank?

activerecord/test/base_test.rb

@@ -299,7 +299,28 @@ def test_query_attribute_boolean
       assert_equal true, Topic.new(:approved => value).approved?
     end
   end
-  
+
+  def test_query_attribute_with_custom_fields
+    object = Company.find_by_sql(<<-SQL).first
+      SELECT c1.*, c2.ruby_type as string_value, c2.rating as int_value
+        FROM companies c1, companies c2
+       WHERE c1.firm_id = c2.id
+         AND c1.id = 2
+    SQL
+
+    assert_equal "Firm", object.string_value
+    assert object.string_value?
+
+    object.string_value = "  "
+    assert !object.string_value?
+
+    assert_equal "1", object.int_value
+    assert object.int_value?
+
+    object.int_value = "0"
+    assert !object.int_value?
+  end
+
   def test_reader_generation
     Topic.find(:first).title
     Firm.find(:first).name