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Asked: 2026-06-14T07:55:49+00:00

I am following the Ruby on Rails Tutorial (http://ruby.railstutorial.org/chapters/a-demo-app#sec-modeling_demo_users) and successfully completed exercises up

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I am following the Ruby on Rails Tutorial (http://ruby.railstutorial.org/chapters/a-demo-app#sec-modeling_demo_users) and successfully completed exercises up to section 2.2.1.

Now experiencing a character encoding issue when I attempt to load any of the User resources (such as localhost:3000/users and localhost:3000/user/new) created in 2.2.1, which is basically out-of-the-box code generated with:

C:\Users\Dennis\rails_projects\demo_app> rails generate scaffold User name:string email:string

My environment:

  • Windows 7 64-bit
  • ruby 1.9.3p194 (2012-04-20) [i386-mingw32]
  • Rails 3.2.9

Rails returns an error page beginning with:

Encoding::InvalidByteSequenceError in Users#index

Showing C:/Users/Dennis/rails_projects/demo_app/app/views/layouts/application.html.erb where line #6 raised:

incomplete "\x00" on UTF-16LE
  (in C:/Users/Dennis/rails_projects/demo_app/app/assets/javascripts/users.js.coffee)

Extracted source (around line #6):

3: <head>
4:   <title>DemoApp</title>
5:   <%= stylesheet_link_tag    "application", :media => "all" %>
6:   <%= javascript_include_tag "application" %>
7:   <%= csrf_meta_tags %>
8: </head>
9: <body>

Contents of users.js.coffee:

# Place all the behaviors and hooks related to the matching controller here.
# All this logic will automatically be available in application.js.
# You can use CoffeeScript in this file: http://jashkenas.github.com/coffee-script/

Contents of application.html.erb:

<!DOCTYPE html>
<html>
<head>
  <title>DemoApp</title>
  <%= stylesheet_link_tag    "application", :media => "all" %>
  <%= javascript_include_tag "application" %>
  <%= csrf_meta_tags %>
</head>
<body>

<%= yield %>

</body>
</html>

Contents of index.html.erb:

<h1>Listing users</h1>

<table>
  <tr>
    <th>Name</th>
    <th>Email</th>
    <th></th>
    <th></th>
    <th></th>
  </tr>

<% @users.each do |user| %>
  <tr>
    <td><%= user.name %></td>
    <td><%= user.email %></td>
    <td><%= link_to 'Show', user %></td>
    <td><%= link_to 'Edit', edit_user_path(user) %></td>
    <td><%= link_to 'Destroy', user, method: :delete, data: { confirm: 'Are you sure?' } %></td>
  </tr>
<% end %>
</table>

<br />

<%= link_to 'New User', new_user_path %>
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1 Answer

  1. Editorial Team

    Renaming users.js.coffee to users.js will work.

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