fixed a 'RecordNotFound' bug when calling 'reload' on a object which doesn't met the default_scope conditions, added test [#3166 status:resolved]

The reload method didn't made use of 'with_exclusive_scope' when reloading the object. This lead to a RecordNotFound exception, in case the object doesn't met the default_scope condition (anymore) - which is obviously a bug. This quick fix makes use of with_exclusive_scope in the reload method as well. See test for full example.

Signed-off-by: José Valim <jose.valim@gmail.com>

activerecord/lib/active_record/base.rb

@@ -1932,7 +1932,7 @@ module ActiveRecord #:nodoc:
       def reload(options = nil)
         clear_aggregation_cache
         clear_association_cache
-        @attributes.update(self.class.find(self.id, options).instance_variable_get('@attributes'))
+        @attributes.update(self.class.send(:with_exclusive_scope) { self.class.find(self.id, options) }.instance_variable_get('@attributes'))
         @attributes_cache = {}
         self
       end

activerecord/test/cases/base_test.rb

@@ -1723,6 +1723,12 @@ class BasicsTest < ActiveRecord::TestCase
     assert_equal t1.title, t2.title
   end
 
+  def test_reload_with_exclusive_scope
+    dev = DeveloperCalledDavid.first
+    dev.update_attributes!( :name => "NotDavid" )
+    assert_equal dev, dev.reload
+  end
+
   def test_define_attr_method_with_value
     k = Class.new( ActiveRecord::Base )
     k.send(:define_attr_method, :table_name, "foo")