Generate right for attribute for labels in collection inputs

It is wrong if namespace or index option is being used.

Fixes #1161

CHANGELOG.md

@@ -5,6 +5,7 @@
 
 ### bug fix
   * Fix `full_error` when the attribute is an association. [@mvdamme](https://github.com/jorge-d)
+  * Fix suppport to `:namespace` and `:index` options for nested check boxes and radio buttons when the attribute is an association.
 
 ## 3.1.0.rc2
 

lib/simple_form/tags.rb

@@ -16,11 +16,9 @@ module SimpleForm
           rendered_item = yield item, value, text, default_html_options.merge(additional_html_options)
 
           if @options.fetch(:boolean_style, SimpleForm.boolean_style) == :nested
-            label_options = {}
-            add_default_name_and_id_for_value(value, label_options)
-            label_options['for'] = label_options.delete('id')
+            label_options = default_html_options.slice(:index, :namespace)
             label_options['class'] = @options[:item_label_class]
-            rendered_item = content_tag(:label, rendered_item, label_options)
+            rendered_item = @template_object.label(@object_name, sanitize_attribute_name(value), rendered_item, label_options)
           end
 
           item_wrapper_tag ? @template_object.content_tag(item_wrapper_tag, rendered_item, class: item_wrapper_class) : rendered_item

test/inputs/collection_check_boxes_input_test.rb

@@ -278,4 +278,26 @@ class CollectionCheckBoxesInputTest < ActionView::TestCase
       assert_select 'span.custom'
     end
   end
+
+  test 'input check boxes with nested style and namespace uses the right for attribute' do
+    swap SimpleForm, include_default_input_wrapper_class: false, boolean_style: :nested do
+      with_concat_form_for @user, namespace: :foo do |f|
+        concat f.input :gender, as: :check_boxes, collection: [:male, :female]
+      end
+
+      assert_select 'label[for=foo_user_gender_male]'
+      assert_select 'label[for=foo_user_gender_female]'
+    end
+  end
+
+  test 'input check boxes with nested style and index uses the right for attribute' do
+    swap SimpleForm, include_default_input_wrapper_class: false, boolean_style: :nested do
+      with_concat_form_for @user, index: 1 do |f|
+        concat f.input :gender, as: :check_boxes, collection: [:male, :female]
+      end
+
+      assert_select 'label[for=user_1_gender_male]'
+      assert_select 'label[for=user_1_gender_female]'
+    end
+  end
 end

test/inputs/collection_radio_buttons_input_test.rb

@@ -393,7 +393,7 @@ class CollectionRadioButtonsInputTest < ActionView::TestCase
     end
   end
 
-  test 'input check boxes custom wrapper class is included when include input wrapper class is falsey' do
+  test 'input radio custom wrapper class is included when include input wrapper class is falsey' do
     swap SimpleForm, include_default_input_wrapper_class: false, boolean_style: :nested do
       with_input_for @user, :gender, :radio_buttons, collection: [:male, :female], item_wrapper_class: 'custom'
 
@@ -401,4 +401,26 @@ class CollectionRadioButtonsInputTest < ActionView::TestCase
       assert_select 'span.custom'
     end
   end
+
+  test 'input radio with nested style and namespace uses the right for attribute' do
+    swap SimpleForm, include_default_input_wrapper_class: false, boolean_style: :nested do
+      with_concat_form_for @user, namespace: :foo do |f|
+        concat f.input :gender, as: :radio_buttons, collection: [:male, :female]
+      end
+
+      assert_select 'label[for=foo_user_gender_male]'
+      assert_select 'label[for=foo_user_gender_female]'
+    end
+  end
+
+  test 'input radio with nested style and index uses the right for attribute' do
+    swap SimpleForm, include_default_input_wrapper_class: false, boolean_style: :nested do
+      with_concat_form_for @user, index: 1 do |f|
+        concat f.input :gender, as: :radio_buttons, collection: [:male, :female]
+      end
+
+      assert_select 'label[for=user_1_gender_male]'
+      assert_select 'label[for=user_1_gender_female]'
+    end
+  end
 end