fixed radio spec and allow to use custom id for radio and checkbox inputs

Author: jonasjabari

app/concepts/matestack/ui/core/form/select/select.rb

@@ -75,7 +75,7 @@ def init_value
     end
 
     def id_for_option value
-      return "#{attr_key}_#{value}"
+      return "#{@tag_attributes[:id]}_#{value}"
     end
 
 

spec/usage/components/form/select/radio_button_spec.rb

@@ -110,11 +110,11 @@ def form_config
 
       visit '/example'
 
-      expect(page).to have_selector('#group-one-radio[name="array_input_one_foo"]')
-      expect(page).to have_selector('#group-one-radio[name="array_input_one_bar"]')
+      expect(page).to have_selector('#group-one-radio_foo[name="array_input_one_foo"]')
+      expect(page).to have_selector('#group-one-radio_bar[name="array_input_one_bar"]')
 
-      expect(page).to have_selector('#group-two-radio[name="array_input_two_foo"]')
-      expect(page).to have_selector('#group-two-radio[name="array_input_two_bar"]')
+      expect(page).to have_selector('#group-two-radio_foo[name="array_input_two_foo"]')
+      expect(page).to have_selector('#group-two-radio_bar[name="array_input_two_bar"]')
     end
 
   end