Inherit collection check boxes from radio

lib/simple_form/inputs/collection_check_boxes_input.rb

@@ -1,6 +1,6 @@
 module SimpleForm
   module Inputs
-    class CollectionCheckBoxesInput < CollectionSelectInput
+    class CollectionCheckBoxesInput < CollectionRadioInput
       def input
         label_method, value_method = detect_collection_methods
 
@@ -10,12 +10,6 @@ module SimpleForm
         )
       end
 
-      def input_options
-        options = super
-        apply_default_collection_options!(options)
-        options
-      end
-
       private
 
       # Checkbox components does not use the required html tag.

lib/simple_form/inputs/collection_radio_input.rb

@@ -16,7 +16,19 @@ module SimpleForm
         options
       end
 
-      private
+      protected
+
+      def apply_default_collection_options!(options)
+        unless options.key?(:item_wrapper_tag)
+          options[:item_wrapper_tag] = SimpleForm.item_wrapper_tag
+        end
+        unless options.key?(:collection_wrapper_tag)
+          options[:collection_wrapper_tag] = SimpleForm.collection_wrapper_tag
+        end
+        options[:collection_wrapper_class] = [
+          options[:collection_wrapper_class], SimpleForm.collection_wrapper_class
+        ].compact.presence
+      end
 
       def collection_block_for_nested_boolean_style
         return unless nested_boolean_style?

lib/simple_form/inputs/collection_select_input.rb

@@ -46,18 +46,6 @@ module SimpleForm
         !!options[:input_html].try(:[], :multiple)
       end
 
-      def apply_default_collection_options!(options)
-        unless options.key?(:item_wrapper_tag)
-          options[:item_wrapper_tag] = SimpleForm.item_wrapper_tag
-        end
-        unless options.key?(:collection_wrapper_tag)
-          options[:collection_wrapper_tag] = SimpleForm.collection_wrapper_tag
-        end
-        options[:collection_wrapper_class] = [
-          options[:collection_wrapper_class], SimpleForm.collection_wrapper_class
-        ].compact.presence
-      end
-
       # Detect the right method to find the label and value for a collection.
       # If no label or value method are defined, will attempt to find them based
       # on default label and value methods that can be configured through