Fix namespace html propagation to single wrapper of label and input

lib/simple_form/wrappers/many.rb

@@ -56,11 +56,15 @@ module SimpleForm
         return content unless tag
 
         klass = html_classes(input, options)
-        opts  = options[:"#{namespace}_html"] || {}
+        opts  = html_options(options)
         opts[:class] = (klass << opts[:class]).join(' ').strip unless klass.empty?
         input.template.content_tag(tag, content, opts)
       end
 
+      def html_options(options)
+        options[:"#{namespace}_html"] || {}
+      end
+
       def html_classes(input, options)
         @defaults[:class].dup
       end

lib/simple_form/wrappers/single.rb

@@ -13,6 +13,14 @@ module SimpleForm
           wrap(input, options, content) if content
         end
       end
+
+      private
+
+      def html_options(options)
+        return {} if [:label, :input].include?(namespace)
+
+        super
+      end
     end
   end
 end