paranoia should work well with associations, unscoped is evil

Fixes #32

README.md

@@ -91,9 +91,9 @@ end
 You can replace the older acts_as_paranoid methods as follows:
 
 ```ruby
-find_with_deleted(:all)       # => unscoped
-find_with_deleted(:first)     # => unscoped.first
-find_with_deleted(id)         # => unscoped.find(id)
+find_with_deleted(:all)       # => with_deleted
+find_with_deleted(:first)     # => with_deleted.first
+find_with_deleted(id)         # => with_deleted.find(id)
 
 find_only_deleted(:all)       # => only_deleted
 find_only_deleted(:first)     # => only_deleted.first

lib/paranoia.rb

@@ -7,9 +7,10 @@ module Paranoia
     def paranoid? ; true ; end
 
     def only_deleted
-      unscoped {
-        where("deleted_at is not null")
-      }
+      scoped.tap { |x| x.default_scoped = false }.where("deleted_at is not null")
+    end
+    def with_deleted
+      scoped.tap { |x| x.default_scoped = false }
     end
   end
 

lib/paranoia/version.rb

 module Paranoia
-  VERSION = "1.1.0"
+  VERSION = "1.2.0"
 end

test/paranoia_test.rb

@@ -8,7 +8,8 @@ FileUtils.mkdir_p File.dirname(DB_FILE)
 FileUtils.rm_f DB_FILE
 
 ActiveRecord::Base.establish_connection :adapter => 'sqlite3', :database => DB_FILE
-ActiveRecord::Base.connection.execute 'CREATE TABLE paranoid_models (id INTEGER NOT NULL PRIMARY KEY, deleted_at DATETIME)'
+ActiveRecord::Base.connection.execute 'CREATE TABLE parent_models (id INTEGER NOT NULL PRIMARY KEY, deleted_at DATETIME)'
+ActiveRecord::Base.connection.execute 'CREATE TABLE paranoid_models (id INTEGER NOT NULL PRIMARY KEY, parent_model_id INTEGER, deleted_at DATETIME)'
 ActiveRecord::Base.connection.execute 'CREATE TABLE featureful_models (id INTEGER NOT NULL PRIMARY KEY, deleted_at DATETIME, name VARCHAR(32))'
 ActiveRecord::Base.connection.execute 'CREATE TABLE plain_models (id INTEGER NOT NULL PRIMARY KEY, deleted_at DATETIME)'
 ActiveRecord::Base.connection.execute 'CREATE TABLE callback_models (id INTEGER NOT NULL PRIMARY KEY, deleted_at DATETIME)'
@@ -69,6 +70,21 @@ class ParanoiaTest < Test::Unit::TestCase
     assert_equal 1, model.class.unscoped.count
 
   end
+  
+  def test_scoping_behavior_for_paranoid_models
+    ParanoidModel.unscoped.delete_all
+    parent1 = ParentModel.create
+    parent2 = ParentModel.create
+    p1 = ParanoidModel.create(:parent_model => parent1)
+    p2 = ParanoidModel.create(:parent_model => parent2)
+    p1.destroy
+    p2.destroy
+    assert_equal 0, parent1.paranoid_models.count
+    assert_equal 1, parent1.paranoid_models.only_deleted.count
+    p3 = ParanoidModel.create(:parent_model => parent1)
+    assert_equal 2, parent1.paranoid_models.with_deleted.count
+    assert_equal [p1,p3], parent1.paranoid_models.with_deleted
+  end
 
   def test_destroy_behavior_for_featureful_paranoid_models
     model = get_featureful_model
@@ -146,7 +162,12 @@ end
 
 # Helper classes
 
+class ParentModel < ActiveRecord::Base
+  has_many :paranoid_models
+end
+
 class ParanoidModel < ActiveRecord::Base
+  belongs_to :parent_model
   acts_as_paranoid
 end