collection tags accept html attributes as the last element of collection

actionpack/CHANGELOG.md

@@ -1,3 +1,8 @@
+*   Element of the `collection_check_boxes` and `collection_radio_buttons` can
+    optionally contain html attributes as the last element of the array.
+
+    *Vasiliy Ermolovich*
+
 *   Update the HTML `BOOLEAN_ATTRIBUTES` in `ActionView::Helpers::TagHelper`
     to conform to the latest HTML 5.1 spec. Add attributes `allowfullscreen`,
     `default`, `inert`, `sortable`, `truespeed`, `typemustmatch`. Fix attribute

actionpack/lib/action_view/helpers/tags/collection_helpers.rb

@@ -73,8 +73,9 @@ module ActionView
             value = value_for_collection(item, @value_method)
             text  = value_for_collection(item, @text_method)
             default_html_options = default_html_options_for_collection(item, value)
+            additional_html_options = option_html_attributes(item)
 
-            yield item, value, text, default_html_options
+            yield item, value, text, default_html_options.merge(additional_html_options)
           end.join.html_safe
         end
       end

actionpack/test/template/form_collections_helper_test.rb

@@ -76,6 +76,14 @@ class FormCollectionsHelperTest < ActionView::TestCase
     assert_select 'input[type=radio][value=false].special-radio#user_active_false'
   end
 
+  test 'collection radio accepts html options as the last element of array' do
+    collection = [[1, true, {class: 'foo'}], [0, false, {class: 'bar'}]]
+    with_collection_radio_buttons :user, :active, collection, :second, :first
+
+    assert_select 'input[type=radio][value=true].foo#user_active_true'
+    assert_select 'input[type=radio][value=false].bar#user_active_false'
+  end
+
   test 'collection radio does not wrap input inside the label' do
     with_collection_radio_buttons :user, :active, [true, false], :to_s, :to_s
 
@@ -192,6 +200,14 @@ class FormCollectionsHelperTest < ActionView::TestCase
     assert_select 'label[for=user_name_199]', '$1.99'
   end
 
+  test 'collection check boxes accepts html options as the last element of array' do
+    collection = [[1, 'Category 1', {class: 'foo'}], [2, 'Category 2', {class: 'bar'}]]
+    with_collection_check_boxes :user, :active, collection, :first, :second
+
+    assert_select 'input[type=checkbox][value=1].foo'
+    assert_select 'input[type=checkbox][value=2].bar'
+  end
+
   test 'collection check boxes accepts selected values as :checked option' do
     collection = (1..3).map{|i| [i, "Category #{i}"] }
     with_collection_check_boxes :user, :category_ids, collection, :first, :last, :checked => [1, 3]