Errors, errors and more errors 
########################
NameError in UserController#index
uninitialized constant ApplicationController::Paginator
########################
RAILS_ROOT:
C:/Users/[UsEr]/Documents/Downloads/InstantRails-2.0-win/rails_apps/jagmits_books
C:/Users/[UsEr]/Documents/Downloads/InstantRails-2.0-win/ruby/lib/ruby/gems/1.8/gems/activesupport-2.0.2/lib/active_support/dependencies.rb:478:in
const_missing' app/controllers/application.rb:22:inpaginate’
app/controllers/application.rb:30:in make_profile_vars' app/controllers/user_controller.rb:9:inindex’
################################################
this is additonal information
################################################
app/controllers/application.rb
########################
Filters added to this controller apply to all controllers in the
application.
Likewise, all the methods added will be available for all controllers.
class ApplicationController < ActionController::Base
helper :all # include all helpers, all the time
See ActionController::RequestForgeryProtection for details
Uncomment the :secret if you’re not using the cookie session store
protect_from_forgery # :secret => ‘f63938e58dda32a445f30fa95a2bea9f’
Paginate item list if present, else call default paginate method.
def paginate(arg, options = {})
if arg.instance_of?(Symbol) or arg.instance_of?(String)
# Use default paginate function.
collection_id = arg # arg is, e.g., :specs or “specs”
super(collection_id, options)
else
# Paginate by hand.
items = arg # arg is a list of items, e.g., users
items_per_page = options[:per_page] || 10
page = (params[:page] || 1).to_i
result_pages = Paginator.new(self, items.length, items_per_page,
page)
offset = (page - 1) * items_per_page
[result_pages, items[offset…(offset + items_per_page - 1)]]
end
end
def make_profile_vars
@blog = @user.blog ||= Blog.new
@pages, @posts = paginate(@blog.posts, :per_page => 3)
end
end
########################
app/controllers/user_controller.rb
########################
def index
@title = “Users - Books”
@user = User.find_by_id(session[:user_id])
@blog = @user.blog ||= Blog.new
make_profile_vars
end
########################
app/view/user/index.rhtml
########################
<% if paginated? %> <% first = @pages.current_page.first_item %> <% last = @pages.current_page.last_item %> <% if first == last %> Post <%= last %> of <% else %> Posts <%= first %>–<%= last %> of <% end %> <% end %> <%= pluralize(@blog.posts.count, "blog post") %>
<%= render :partial => "posts/post", :collection => @posts %> <%= "Pages: #{pagination_links(@pages)}" if paginated? %>########################
########################
