fix polymorphic association bug

CHANGELOG.md

@@ -1,3 +1,7 @@
 1.2.0
 -----
 * [clear cache after update_counters](https://github.com/csdn-dev/second_level_cache/commit/240dde81199124092e0e8ad0500c167ac146e301)
+
+1.2.1
+-----
+* [fix polymorphic association bug]

Gemfile.lock

@@ -1,36 +1,36 @@
 PATH
   remote: .
   specs:
-    second_level_cache (1.1.1)
-      activesupport (> 3.0)
+    second_level_cache (1.2.1)
+      activesupport (~> 3.2.0)
 
 GEM
   remote: http://rubygems.org/
   specs:
-    activemodel (3.2.1)
-      activesupport (= 3.2.1)
+    activemodel (3.2.6)
+      activesupport (= 3.2.6)
       builder (~> 3.0.0)
-    activerecord (3.2.1)
-      activemodel (= 3.2.1)
-      activesupport (= 3.2.1)
-      arel (~> 3.0.0)
+    activerecord (3.2.6)
+      activemodel (= 3.2.6)
+      activesupport (= 3.2.6)
+      arel (~> 3.0.2)
       tzinfo (~> 0.3.29)
-    activesupport (3.2.1)
+    activesupport (3.2.6)
       i18n (~> 0.6)
       multi_json (~> 1.0)
-    arel (3.0.0)
+    arel (3.0.2)
     builder (3.0.0)
     i18n (0.6.0)
-    multi_json (1.0.4)
+    multi_json (1.3.6)
     rake (0.9.2.2)
-    sqlite3 (1.3.5)
-    tzinfo (0.3.31)
+    sqlite3 (1.3.6)
+    tzinfo (0.3.33)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  activerecord (> 3.0)
+  activerecord (~> 3.2.0)
   rake
   second_level_cache!
   sqlite3

init.rb

@@ -1,2 +1,2 @@
-# encoding: utf-8
+# -*- encoding : utf-8 -*-
 require File.expand_path("../lib/second_level_cache", __FILE__)

lib/second_level_cache.rb

@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 require 'active_support/all'
 require 'second_level_cache/config'
 require 'second_level_cache/marshal'

lib/second_level_cache/active_record.rb

@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 require 'second_level_cache/active_record/base'
 require 'second_level_cache/active_record/finder_methods'
 require 'second_level_cache/active_record/persistence'

lib/second_level_cache/active_record/base.rb

@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 module SecondLevelCache
   module ActiveRecord
     module Base

lib/second_level_cache/active_record/finder_methods.rb

@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 require 'second_level_cache/arel/wheres'
 
 module SecondLevelCache

lib/second_level_cache/active_record/persistence.rb

@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 module SecondLevelCache
   module ActiveRecord
     module Persistence

lib/second_level_cache/active_record/singular_association.rb

@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 module SecondLevelCache
   module ActiveRecord
     module Associations
@@ -10,8 +11,8 @@ module SingularAssociation
         end
 
         def find_target_with_second_level_cache
-          return find_target_without_second_level_cache unless association_class.second_level_cache_enabled?
-          cache_record = association_class.read_second_level_cache(second_level_cache_key)
+          return find_target_without_second_level_cache unless klass.second_level_cache_enabled?
+          cache_record = klass.read_second_level_cache(second_level_cache_key)
           return cache_record.tap{|record| set_inverse_instance(record)} if cache_record
           record = find_target_without_second_level_cache
           record.write_second_level_cache

lib/second_level_cache/arel/wheres.rb

@@ -1,4 +1,4 @@
-# encoding: utf-8
+# -*- encoding : utf-8 -*-
 module SecondLevelCache
   module Arel
     class Wheres

lib/second_level_cache/config.rb

@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 module SecondLevelCache
   module Config
     extend self

lib/second_level_cache/marshal.rb

@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 module Marshal
   class << self
     def load_with_constantize(value)

lib/second_level_cache/version.rb

@@ -1,4 +1,4 @@
-# -*- encoding: utf-8 -*-
+# -*- encoding : utf-8 -*-
 module SecondLevelCache 
-  VERSION = "1.2.0"
+  VERSION = "1.2.1"
 end

second_level_cache.gemspec

@@ -15,9 +15,9 @@ Gem::Specification.new do |gem|
   gem.require_paths = ["lib"]
   gem.version       = SecondLevelCache::VERSION
 
-  gem.add_runtime_dependency "activesupport", ["> 3.0"]
+  gem.add_runtime_dependency "activesupport", ["~> 3.2.0"]
 
-  gem.add_development_dependency "activerecord", ["> 3.0"]
+  gem.add_development_dependency "activerecord", ["~> 3.2.0"]
   gem.add_development_dependency "sqlite3"
   gem.add_development_dependency "rake"
 end

test/active_record/base_test.rb

@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 require 'active_record/test_helper'
 
 class ActiveRecord::BaseTest < Test::Unit::TestCase

test/active_record/finder_methods_test.rb

@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 require 'active_record/test_helper'
 
 class ActiveRecord::FinderMethodsTest < Test::Unit::TestCase

test/active_record/model/book.rb

@@ -1,11 +1,14 @@
+# -*- encoding : utf-8 -*-
 ActiveRecord::Base.connection.create_table(:books, :force => true) do |t|
   t.string  :title
   t.string  :body
   t.integer :user_id
+  t.integer :images_count, :default => 0
 end
 
 class Book < ActiveRecord::Base
   acts_as_cached
 
   belongs_to :user, :counter_cache => true
+  has_many :images, :as => :imagable
 end

test/active_record/model/image.rb

@@ -0,0 +1,13 @@
+# -*- encoding : utf-8 -*-
+ActiveRecord::Base.connection.create_table(:images, :force => true) do |t|
+  t.string  :url
+  t.string  :imagable_type
+  t.integer :imagable_id
+end
+
+class Image < ActiveRecord::Base
+  acts_as_cached
+
+  belongs_to :imagable, :polymorphic => true, :counter_cache => true
+end
+

test/active_record/model/user.rb

@@ -1,11 +1,14 @@
+# -*- encoding : utf-8 -*-
 ActiveRecord::Base.connection.create_table(:users, :force => true) do |t|
   t.string  :name
   t.string  :email
   t.integer :books_count, :default => 0
+  t.integer :images_count, :default => 0
 end
 
 class User < ActiveRecord::Base
   acts_as_cached
 
   has_many :books
+  has_many :images, :as => :imagable
 end

test/active_record/persistence_test.rb

@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 require 'active_record/test_helper'
 
 class ActiveRecord::PersistenceTest < Test::Unit::TestCase

test/active_record/polymorphic_association_test.rb

@@ -0,0 +1,24 @@
+# -*- encoding : utf-8 -*-
+require 'active_record/test_helper'
+
+class ActiveRecord::PolymorphicAssociationTest < Test::Unit::TestCase
+  def setup
+    @user = User.create :name => 'csdn', :email => 'test@csdn.com'
+  end
+
+  def test_should_get_cache_when_use_polymorphic_association
+    image = @user.images.create
+
+    no_connection do
+      assert_equal @user, image.imagable
+    end
+  end
+
+  def test_should_write_polymorphic_association_cache
+    image = @user.images.create
+    @user.expire_second_level_cache
+    assert_nil User.read_second_level_cache(@user.id)
+    assert_equal @user, image.imagable
+  end
+end
+

test/active_record/second_level_cache_test.rb

@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 require 'active_record/test_helper'
 
 class ActiveRecord::SecondLevelCacheTest < Test::Unit::TestCase

test/active_record/singular_association_test.rb

@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 require 'active_record/test_helper'
 
 class ActiveRecord::SingularAssociationTest < Test::Unit::TestCase

test/active_record/test_helper.rb

@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 require 'test_helper'
 require 'active_record'
 require 'second_level_cache/active_record'
@@ -29,3 +30,4 @@ def teardown
 
 require 'active_record/model/user'
 require 'active_record/model/book'
+require 'active_record/model/image'

test/test_helper.rb

@@ -1,3 +1,4 @@
+# -*- encoding : utf-8 -*-
 require 'rubygems'
 require 'bundler/setup'
 require 'second_level_cache'