diff --git a/.travis.yml b/.travis.yml
index a1074b2d..5bcb479e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,12 +1,11 @@
 language: ruby
 rvm:
-  - 1.9.3
   - 2.0.0
   - 2.1.0
   - 2.2.0
   - jruby-19mode
 
 env:
-  - RAILS='~> 4.0.8'
-  - RAILS='~> 4.1.4'
-  - RAILS='~> 4.2.0'
+  - RAILS='~> 4.0.13'
+  - RAILS='~> 4.1.10'
+  - RAILS='~> 4.2.1'
diff --git a/README.md b/README.md
index 00527902..ac1e638a 100644
--- a/README.md
+++ b/README.md
@@ -25,7 +25,7 @@ gem "paranoia", "~> 2.0"
 Of course you can install this from GitHub as well:
 
 ``` ruby
-gem "paranoia", :github => "radar/paranoia", :branch => "master"
+gem "paranoia", :github => "radar/paranoia", :branch => "rails3"
 # or
 gem "paranoia", :github => "radar/paranoia", :branch => "rails4"
 ```
@@ -124,6 +124,16 @@ def product
 end
 ```
 
+If you want to include associated soft-deleted objects, you can (un)scope the association:
+
+``` ruby
+class Person < ActiveRecord::Base
+  belongs_to :group, -> { with_deleted }
+end
+
+Person.includes(:group).all
+```
+
 If you want to find all records, even those which are deleted:
 
 ``` ruby
@@ -148,6 +158,8 @@ If you want to restore a record:
 
 ``` ruby
 Client.restore(id)
+# or
+client.restore
 ```
 
 If you want to restore a whole bunch of records:
@@ -160,6 +172,8 @@ If you want to restore a record and their dependently destroyed associated recor
 
 ``` ruby
 Client.restore(id, :recursive => true)
+# or
+client.restore(:recursive => true)
 ```
 
 If you want callbacks to trigger before a restore:
@@ -184,27 +198,6 @@ You can replace the older `acts_as_paranoid` methods as follows:
 The `recover` method in `acts_as_paranoid` runs `update` callbacks.  Paranoia's
 `restore` method does not do this.
 
-## Support for Unique Keys with Null Values
-
-Most databases ignore null columns when it comes to resolving unique index
-constraints.  This means unique constraints that involve nullable columns may be
-problematic. Instead of using `NULL` to represent a not-deleted row, you can pick
-a value that you want paranoia to mean not deleted. Note that you can/should
-now apply a `NOT NULL` constraint to your `deleted_at` column.
-
-Per model:
-
-```ruby
-# pick some value
-acts_as_paranoid sentinel_value: DateTime.new(0)
-```
-
-or globally in a rails initializer, e.g. `config/initializer/paranoia.rb`
-
-```ruby
-Paranoia.default_sentinel_value = DateTime.new(0)
-```
-
 ## License
 
 This gem is released under the MIT license.
diff --git a/lib/paranoia.rb b/lib/paranoia.rb
index e659ac33..e26bb0ba 100644
--- a/lib/paranoia.rb
+++ b/lib/paranoia.rb
@@ -34,12 +34,19 @@ def with_deleted
     end
 
     def only_deleted
-      with_deleted.where.not(table_name => { paranoia_column => paranoia_sentinel_value} )
+      with_deleted.where.not(paranoia_column => paranoia_sentinel_value)
     end
     alias :deleted :only_deleted
 
-    def restore(id, opts = {})
-      Array(id).flatten.map { |one_id| only_deleted.find(one_id).restore!(opts) }
+    def restore(id_or_ids, opts = {})
+      ids = Array(id_or_ids).flatten
+      any_object_instead_of_id = ids.any? { |id| ActiveRecord::Base === id }
+      if any_object_instead_of_id
+        ids.map! { |id| ActiveRecord::Base === id ? id.id : id }
+        ActiveSupport::Deprecation.warn("You are passing an instance of ActiveRecord::Base to `restore`. " \
+                                        "Please pass the id of the object by calling `.id`")
+      end
+      ids.map { |id| only_deleted.find(id).restore!(opts) }
     end
   end
 
@@ -64,7 +71,18 @@ def self.extended(klazz)
   def destroy
     transaction do
       run_callbacks(:destroy) do
-        touch_paranoia_column unless destroyed?
+        result = touch_paranoia_column
+        if result && ActiveRecord::VERSION::STRING >= '4.2'
+          each_counter_cached_associations do |association|
+            foreign_key = association.reflection.foreign_key.to_sym
+            unless destroyed_by_association && destroyed_by_association.foreign_key.to_sym == foreign_key
+              if send(association.reflection.name)
+                association.decrement_counters
+              end
+            end
+          end
+        end
+        result
       end
     end
   end
@@ -104,8 +122,7 @@ def paranoia_destroyed?
 
   # touch paranoia column.
   # insert time to paranoia column.
-  # @param with_transaction [Boolean] exec with ActiveRecord Transactions.
-  def touch_paranoia_column(with_transaction=false)
+  def touch_paranoia_column
     raise ActiveRecord::ReadOnlyRecord, "#{self.class} is marked as readonly" if readonly?
     if persisted?
       touch(paranoia_column)
@@ -196,7 +213,7 @@ def really_destroy!
     self.paranoia_dependent_recovery_window = options[:dependent_recovery_window] || Paranoia.default_dependent_recovery_window
 
     def self.paranoia_scope
-      where(table_name => { paranoia_column => paranoia_sentinel_value })
+      where(paranoia_column => paranoia_sentinel_value)
     end
     default_scope { paranoia_scope }
 
diff --git a/lib/paranoia/version.rb b/lib/paranoia/version.rb
index a06029e3..fc28ebb9 100644
--- a/lib/paranoia/version.rb
+++ b/lib/paranoia/version.rb
@@ -1,3 +1,3 @@
 module Paranoia
-  VERSION = "2.1.0"
+  VERSION = "2.1.2"
 end
diff --git a/test/paranoia_test.rb b/test/paranoia_test.rb
index 7f6c2124..3fb072b5 100644
--- a/test/paranoia_test.rb
+++ b/test/paranoia_test.rb
@@ -12,27 +12,32 @@ def connect!
 
 def setup!
   connect!
-  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 paranoid_model_with_belongs (id INTEGER NOT NULL PRIMARY KEY, parent_model_id INTEGER, deleted_at DATETIME, paranoid_model_with_has_one_id INTEGER)'
-  ActiveRecord::Base.connection.execute 'CREATE TABLE paranoid_model_with_build_belongs (id INTEGER NOT NULL PRIMARY KEY, parent_model_id INTEGER, deleted_at DATETIME, paranoid_model_with_has_one_and_build_id INTEGER, name VARCHAR(32))'
-  ActiveRecord::Base.connection.execute 'CREATE TABLE paranoid_model_with_anthor_class_name_belongs (id INTEGER NOT NULL PRIMARY KEY, parent_model_id INTEGER, deleted_at DATETIME, paranoid_model_with_has_one_id INTEGER)'
-  ActiveRecord::Base.connection.execute 'CREATE TABLE paranoid_model_with_foreign_key_belongs (id INTEGER NOT NULL PRIMARY KEY, parent_model_id INTEGER, deleted_at DATETIME, has_one_foreign_key_id INTEGER)'
-  ActiveRecord::Base.connection.execute 'CREATE TABLE not_paranoid_model_with_belongs (id INTEGER NOT NULL PRIMARY KEY, parent_model_id INTEGER, paranoid_model_with_has_one_id INTEGER)'
-  ActiveRecord::Base.connection.execute 'CREATE TABLE paranoid_model_with_has_one_and_builds (id INTEGER NOT NULL PRIMARY KEY, parent_model_id INTEGER, color VARCHAR(32), deleted_at DATETIME, has_one_foreign_key_id INTEGER)'
-  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)'
-  ActiveRecord::Base.connection.execute 'CREATE TABLE fail_callback_models (id INTEGER NOT NULL PRIMARY KEY, deleted_at DATETIME)'
-  ActiveRecord::Base.connection.execute 'CREATE TABLE related_models (id INTEGER NOT NULL PRIMARY KEY, parent_model_id INTEGER NOT NULL, deleted_at DATETIME)'
-  ActiveRecord::Base.connection.execute 'CREATE TABLE asplode_models (id INTEGER NOT NULL PRIMARY KEY, parent_model_id INTEGER, deleted_at DATETIME)'
-  ActiveRecord::Base.connection.execute 'CREATE TABLE employers (id INTEGER NOT NULL PRIMARY KEY, deleted_at DATETIME)'
-  ActiveRecord::Base.connection.execute 'CREATE TABLE employees (id INTEGER NOT NULL PRIMARY KEY, deleted_at DATETIME)'
-  ActiveRecord::Base.connection.execute 'CREATE TABLE jobs (id INTEGER NOT NULL PRIMARY KEY, employer_id INTEGER NOT NULL, employee_id INTEGER NOT NULL, deleted_at DATETIME)'
-  ActiveRecord::Base.connection.execute 'CREATE TABLE custom_column_models (id INTEGER NOT NULL PRIMARY KEY, destroyed_at DATETIME)'
-  ActiveRecord::Base.connection.execute 'CREATE TABLE custom_sentinel_models (id INTEGER NOT NULL PRIMARY KEY, deleted_at DATETIME NOT NULL)'
-  ActiveRecord::Base.connection.execute 'CREATE TABLE non_paranoid_models (id INTEGER NOT NULL PRIMARY KEY, parent_model_id INTEGER)'
-  ActiveRecord::Base.connection.execute 'CREATE TABLE polymorphic_models (id INTEGER NOT NULL PRIMARY KEY, parent_id INTEGER, parent_type STRING, deleted_at DATETIME)'
+  {
+    'parent_model_with_counter_cache_columns' => 'related_models_count INTEGER DEFAULT 0',
+    'parent_models' => 'deleted_at DATETIME',
+    'paranoid_models' => 'parent_model_id INTEGER, deleted_at DATETIME',
+    'paranoid_model_with_belongs' => 'parent_model_id INTEGER, deleted_at DATETIME, paranoid_model_with_has_one_id INTEGER',
+    'paranoid_model_with_build_belongs' => 'parent_model_id INTEGER, deleted_at DATETIME, paranoid_model_with_has_one_and_build_id INTEGER, name VARCHAR(32)',
+    'paranoid_model_with_anthor_class_name_belongs' => 'parent_model_id INTEGER, deleted_at DATETIME, paranoid_model_with_has_one_id INTEGER',
+    'paranoid_model_with_foreign_key_belongs' => 'parent_model_id INTEGER, deleted_at DATETIME, has_one_foreign_key_id INTEGER',
+    'not_paranoid_model_with_belongs' => 'parent_model_id INTEGER, paranoid_model_with_has_one_id INTEGER',
+    'paranoid_model_with_has_one_and_builds' => 'parent_model_id INTEGER, color VARCHAR(32), deleted_at DATETIME, has_one_foreign_key_id INTEGER',
+    'featureful_models' => 'deleted_at DATETIME, name VARCHAR(32)',
+    'plain_models' => 'deleted_at DATETIME',
+    'callback_models' => 'deleted_at DATETIME',
+    'fail_callback_models' => 'deleted_at DATETIME',
+    'related_models' => 'parent_model_id INTEGER, parent_model_with_counter_cache_column_id INTEGER, deleted_at DATETIME',
+    'asplode_models' => 'parent_model_id INTEGER, deleted_at DATETIME',
+    'employers' => 'deleted_at DATETIME',
+    'employees' => 'deleted_at DATETIME',
+    'jobs' => 'employer_id INTEGER NOT NULL, employee_id INTEGER NOT NULL, deleted_at DATETIME',
+    'custom_column_models' => 'destroyed_at DATETIME',
+    'custom_sentinel_models' => 'deleted_at DATETIME NOT NULL',
+    'non_paranoid_models' => 'parent_model_id INTEGER',
+    'polymorphic_models' => 'parent_id INTEGER, parent_type STRING, deleted_at DATETIME'
+  }.each do |table_name, columns_as_sql_string|
+    ActiveRecord::Base.connection.execute "CREATE TABLE #{table_name} (id INTEGER NOT NULL PRIMARY KEY, #{columns_as_sql_string})"
+  end
 end
 
 class WithDifferentConnection < ActiveRecord::Base
@@ -797,6 +802,56 @@ def test_missing_restore_recursive_on_polymorphic_has_one_association
     assert_equal 0, polymorphic.class.count
   end
 
+  def test_counter_cache_column_update_on_destroy#_and_restore_and_really_destroy
+    parent_model_with_counter_cache_column = ParentModelWithCounterCacheColumn.create
+    related_model = parent_model_with_counter_cache_column.related_models.create
+
+    assert_equal 1, parent_model_with_counter_cache_column.reload.related_models_count
+    related_model.destroy
+    assert_equal 0, parent_model_with_counter_cache_column.reload.related_models_count
+  end
+
+  def test_callbacks_for_counter_cache_column_update_on_destroy
+    parent_model_with_counter_cache_column = ParentModelWithCounterCacheColumn.create
+    related_model = parent_model_with_counter_cache_column.related_models.create
+
+    assert_equal nil, related_model.instance_variable_get(:@after_destroy_callback_called)
+    assert_equal nil, related_model.instance_variable_get(:@after_commit_on_destroy_callback_called)
+
+    related_model.destroy
+
+    assert related_model.instance_variable_get(:@after_destroy_callback_called)
+    # assert related_model.instance_variable_get(:@after_commit_on_destroy_callback_called)
+  end
+
+  # TODO: find a fix for Rails 4.1
+  if ActiveRecord::VERSION::STRING !~ /\A4\.1/
+    def test_counter_cache_column_update_on_really_destroy
+      parent_model_with_counter_cache_column = ParentModelWithCounterCacheColumn.create
+      related_model = parent_model_with_counter_cache_column.related_models.create
+
+      assert_equal 1, parent_model_with_counter_cache_column.reload.related_models_count
+      related_model.really_destroy!
+      assert_equal 0, parent_model_with_counter_cache_column.reload.related_models_count
+    end
+  end
+
+  # TODO: find a fix for Rails 4.0 and 4.1
+  if ActiveRecord::VERSION::STRING >= '4.2'
+    def test_callbacks_for_counter_cache_column_update_on_really_destroy!
+      parent_model_with_counter_cache_column = ParentModelWithCounterCacheColumn.create
+      related_model = parent_model_with_counter_cache_column.related_models.create
+
+      assert_equal nil, related_model.instance_variable_get(:@after_destroy_callback_called)
+      assert_equal nil, related_model.instance_variable_get(:@after_commit_on_destroy_callback_called)
+
+      related_model.really_destroy!
+
+      assert related_model.instance_variable_get(:@after_destroy_callback_called)
+      assert related_model.instance_variable_get(:@after_commit_on_destroy_callback_called)
+    end
+  end
+
   private
   def get_featureful_model
     FeaturefulModel.new(:name => "not empty")
@@ -853,9 +908,27 @@ class ParentModel < ActiveRecord::Base
   has_one :polymorphic_model, as: :parent, dependent: :destroy
 end
 
+class ParentModelWithCounterCacheColumn < ActiveRecord::Base
+  has_many :related_models
+end
+
 class RelatedModel < ActiveRecord::Base
   acts_as_paranoid
   belongs_to :parent_model
+  belongs_to :parent_model_with_counter_cache_column, counter_cache: true
+
+  after_destroy do |model|
+    if parent_model_with_counter_cache_column && parent_model_with_counter_cache_column.reload.related_models_count == 0
+      model.instance_variable_set :@after_destroy_callback_called, true
+    end
+  end
+  after_commit :set_after_commit_on_destroy_callback_called, on: :destroy
+
+  def set_after_commit_on_destroy_callback_called
+    if parent_model_with_counter_cache_column && parent_model_with_counter_cache_column.reload.related_models_count == 0
+      self.instance_variable_set :@after_commit_on_destroy_callback_called, true
+    end
+  end
 end
 
 class Employer < ActiveRecord::Base
@@ -953,8 +1026,6 @@ class FlaggedModelWithCustomIndex < PlainModel
   acts_as_paranoid :flag_column => :is_deleted, :indexed_column => :is_deleted
 end
 
-
-
 class AsplodeModel < ActiveRecord::Base
   acts_as_paranoid
   before_destroy do |r|