Deal only with objets in the Wrapper API

lib/simple_form/form_builder.rb

@@ -137,7 +137,8 @@ module SimpleForm
 
       input      = find_input(attribute_name, options)
       wrapper    = find_wrapper(input.input_type, options)
-      components = (wrapper.components & ATTRIBUTE_COMPONENTS) + [:input]
+      components = (wrapper.components.map(&:namespace) & ATTRIBUTE_COMPONENTS) + [:input]
+      components = components.map { |component| SimpleForm::Wrappers::Leaf.new(component) }
 
       SimpleForm::Wrappers::Root.new(components, wrapper.options.merge(wrapper: false)).render input
     end

lib/simple_form/wrappers.rb

@@ -4,5 +4,6 @@ module SimpleForm
     autoload :Many,    'simple_form/wrappers/many'
     autoload :Root,    'simple_form/wrappers/root'
     autoload :Single,  'simple_form/wrappers/single'
+    autoload :Leaf,    'simple_form/wrappers/leaf'
   end
 end

lib/simple_form/wrappers/builder.rb

@@ -49,7 +49,7 @@ module SimpleForm
         if options && wrapper = options[:wrap_with]
           @components << Single.new(name, wrapper)
         else
-          @components << name
+          @components << Leaf.new(name)
         end
       end
 

lib/simple_form/wrappers/leaf.rb

@@ -0,0 +1,19 @@
+module SimpleForm
+  module Wrappers
+    class Leaf
+      attr_reader :namespace
+
+      def initialize(namespace)
+        @namespace = namespace
+      end
+
+      def render(input)
+        input.send(@namespace)
+      end
+
+      def find(name)
+        return self if @namespace == name
+      end
+    end
+  end
+end

lib/simple_form/wrappers/many.rb

@@ -25,7 +25,7 @@ module SimpleForm
         options = input.options
 
         components.each do |component|
-          next if options[component] == false
+          next if options[component.namespace] == false
           rendered = component.respond_to?(:render) ? component.render(input) : input.send(component)
           content.safe_concat rendered.to_s if rendered
         end

lib/simple_form/wrappers/single.rb

@@ -3,7 +3,7 @@ module SimpleForm
     # `Single` is an optimization for a wrapper that has only one component.
     class Single < Many
       def initialize(name, options={})
-        super(name, [name], options)
+        super(name, [Leaf.new(name)], options)
       end
 
       def render(input)