[Rails] Action Controller: Exception caught

Hello,

I am trying to this project to work but I ran into this issue, the
project is from a book called Beginning Ruby on Rails E-Commerce: From
Novice to Professional. It references stuff from Rails 1.0. I am still
new at using Ruby and Rails. Thanks for any help.

NoMethodError in Admin/author#new

Showing C:/IS410/Programs/emporium/app/views/admin/author/_form.html.erb
where line #1 raised:

undefined method `error_messages_for' for
#<#<Class:0x40f6d10>:0x45784e0>

Extracted source (around line #1):

1: <%= error_messages_for 'author' %>
2:
3: <p><label for="author_first_name">First name</label><br/>
4: <%= text_field 'author', 'first_name' %></p>

Trace of template inclusion: app/views/admin/author/new.html.erb

Rails.root: C:/IS410/Programs/emporium
Application Trace | Framework Trace | Full Trace

app/views/admin/author/_form.html.erb:1:in
`_app_views_admin_author__form_html_erb__297742407_30546288'
app/views/admin/author/new.html.erb:4:in
`_app_views_admin_author_new_html_erb__600623049_36434616'

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