Clean up render @object a bit more.

actionpack/lib/action_controller/record_identifier.rb

@@ -36,21 +36,6 @@ module RecordIdentifier
     JOIN = '_'.freeze
     NEW = 'new'.freeze
 
-    # Returns plural/singular for a record or class. Example:
-    #
-    #   partial_path(post)                   # => "posts/post"
-    #   partial_path(Person)                 # => "people/person"
-    #   partial_path(Person, "admin/games")  # => "admin/people/person"
-    def partial_path(record_or_class, controller_path = nil)
-      name = model_name_from_record_or_class(record_or_class)
-
-      if controller_path && controller_path.include?("/")
-        "#{File.dirname(controller_path)}/#{name.partial_path}"
-      else
-        name.partial_path
-      end
-    end
-
     # The DOM class convention is to use the singular form of an object or class. Examples:
     #
     #   dom_class(post)   # => "post"

actionpack/lib/action_view/render/partials.rb

@@ -177,6 +177,12 @@ module Partials
       attr_accessor :_partial
     end
 
+    module ClassMethods
+      def _partial_names
+        @_partial_names ||= ActiveSupport::ConcurrentHash.new
+      end
+    end
+
     def render_partial(*args)
       @assigns_added = false
       _render_partial(*args)
@@ -189,12 +195,9 @@ def _render_partial(options = {}) #:nodoc:
 
       if partial.respond_to?(:to_ary)
         return _render_partial_collection(partial, options)
-      elsif partial.is_a?(ActionView::Helpers::FormBuilder)
-        path = partial.class.model_name.partial_path
-        options[:locals].merge!(path.to_sym => partial)
       elsif !partial.is_a?(String)
         options[:object] = object = partial
-        path = ActionController::RecordIdentifier.partial_path(object, controller_path)
+        path = _partial_path(object)
       end
 
       parts = partial_parts(path, options)
@@ -203,6 +206,17 @@ def _render_partial(options = {}) #:nodoc:
     end
 
     private
+      def _partial_path(object)
+        self.class._partial_names[[controller.class, object.class]] ||= begin
+          name = object.class.model_name
+          if controller_path && controller_path.include?("/")
+            File.join(File.dirname(controller_path), name.partial_path)
+          else
+            name.partial_path
+          end
+        end
+      end
+
       def partial_parts(name, options)
         segments = name.split("/")
         parts = segments.pop.split(".")
@@ -278,8 +292,7 @@ def _render_partial_collection(collection, options = {}, passed_template = nil)
         index, @_partial_path = 0, nil
         collection.map do |object|
           options[:_template] = template = passed_template || begin
-            _partial_path =
-              ActionController::RecordIdentifier.partial_path(object, controller_path)
+            _partial_path = _partial_path(object)
             template = _pick_partial_template(_partial_path)
           end
 

actionpack/test/controller/record_identifier_test.rb

@@ -54,24 +54,6 @@ def test_dom_id_with_prefix
     assert_equal "edit_#{@singular}_1", dom_id(@record, :edit)
   end
 
-  def test_partial_path
-    expected = "#{@plural}/#{@singular}"
-    assert_equal expected, partial_path(@record)
-    assert_equal expected, partial_path(Comment)
-  end
-
-  def test_partial_path_with_namespaced_controller_path
-    expected = "admin/#{@plural}/#{@singular}"
-    assert_equal expected, partial_path(@record, "admin/posts")
-    assert_equal expected, partial_path(@klass, "admin/posts")
-  end
-
-  def test_partial_path_with_not_namespaced_controller_path
-    expected = "#{@plural}/#{@singular}"
-    assert_equal expected, partial_path(@record, "posts")
-    assert_equal expected, partial_path(@klass, "posts")
-  end
-
   def test_dom_class
     assert_equal @singular, dom_class(@record)
   end
@@ -101,42 +83,3 @@ def method_missing(method, *args)
       RecordIdentifier.send(method, *args)
     end
 end
-
-class NestedRecordIdentifierTest < RecordIdentifierTest
-  def setup
-    @klass  = Comment::Nested
-    @record = @klass.new
-    @singular = 'comment_nested'
-    @plural = 'comment_nesteds'
-  end
-
-  def test_partial_path
-    expected = "comment/nesteds/nested"
-    assert_equal expected, partial_path(@record)
-    assert_equal expected, partial_path(Comment::Nested)
-  end
-
-  def test_partial_path_with_namespaced_controller_path
-    expected = "admin/comment/nesteds/nested"
-    assert_equal expected, partial_path(@record, "admin/posts")
-    assert_equal expected, partial_path(@klass, "admin/posts")
-  end
-
-  def test_partial_path_with_deeper_namespaced_controller_path
-    expected = "deeper/admin/comment/nesteds/nested"
-    assert_equal expected, partial_path(@record, "deeper/admin/posts")
-    assert_equal expected, partial_path(@klass, "deeper/admin/posts")
-  end
-
-  def test_partial_path_with_even_deeper_namespaced_controller_path
-    expected = "even/more/deeper/admin/comment/nesteds/nested"
-    assert_equal expected, partial_path(@record, "even/more/deeper/admin/posts")
-    assert_equal expected, partial_path(@klass, "even/more/deeper/admin/posts")
-  end
-
-  def test_partial_path_with_not_namespaced_controller_path
-    expected = "comment/nesteds/nested"
-    assert_equal expected, partial_path(@record, "posts")
-    assert_equal expected, partial_path(@klass, "posts")
-  end
-end