Add indicator when selecting language

Author: ishikawa999

app/views/custom_message_settings/_normal_tab.html.erb

@@ -1,6 +1,7 @@
 <%= form_tag custom_message_settings_path, method: :post do %>
   <%= hidden_field_tag :tab, 'normal' %>
-  <label><%= l(:field_language) %>: </label><%= select_tag 'lang', options_for_select(languages_options, @lang), include_blank: true, data: {remote: true, url: url_for(action: :edit)} %>
+  <label><%= l(:field_language) %>: </label>
+  <%= select_tag 'lang', options_for_select(languages_options, @lang), include_blank: true, data: {remote: true, url: url_for(action: :edit)}, onchange: '$("#ajax-indicator").show();' %>
   <hr>
 
   <div id='edit-custom-messages'>

app/views/custom_message_settings/edit.js.erb

@@ -1 +1,2 @@
-$('#edit-custom-messages').html("<%= j (render 'custom_message_settings/messages', lang: @lang) %>");
+$('#edit-custom-messages').html("<%= j (render 'custom_message_settings/messages', lang: @lang) %>");
+$('#ajax-indicator').hide();