diff --git a/app/assets/javascripts/select2.js b/app/assets/javascripts/select2.js
new file mode 100644
index 0000000..32b1729
--- /dev/null
+++ b/app/assets/javascripts/select2.js
@@ -0,0 +1,3 @@
+$(document).on('turbolinks:load', function() {
+  $('.select2').select2({ tags: true, tokenSeparators: [',']});
+});
diff --git a/app/views/posts/_form.haml b/app/views/posts/_form.haml
index e4bb175..ac52eea 100644
--- a/app/views/posts/_form.haml
+++ b/app/views/posts/_form.haml
@@ -120,8 +120,3 @@
       %small.text-muted.form-text= t('posts.lang_help')
   .form-group
     = submit_tag t('posts.save'), class: 'btn btn-success'
-
-:javascript
-  $(document).on('turbolinks:load', function() {
-    $('.select2').select2({ tags: true, tokenSeparators: [',']});
-  });