Users index with pagination

Gemfile

@@ -3,10 +3,12 @@ source 'http://rubygems.org'
 gem 'rails', '3.0.0.rc'
 gem 'sqlite3-ruby', '1.2.5', :require => 'sqlite3'
 gem 'gravatar_image_tag', '0.1.0'
+gem 'will_paginate', '3.0.pre'
 
 group :development do
   gem 'rspec-rails', '2.0.0.beta.18'
   gem 'annotate-models', '1.0.4'
+  gem 'faker', '0.3.1'
 end
 
 group :test do

Gemfile.lock

@@ -39,6 +39,7 @@ GEM
     factory_girl_rails (1.0)
       factory_girl (~> 1.3)
       rails (>= 3.0.0.beta4)
+    faker (0.3.1)
     gravatar_image_tag (0.1.0)
     i18n (0.4.1)
     mail (2.2.5)
@@ -88,16 +89,19 @@ GEM
       nokogiri (>= 1.2.0)
       rack (>= 1.0)
       rack-test (>= 0.5.3)
+    will_paginate (3.0.pre)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
   annotate-models (= 1.0.4)
   factory_girl_rails (= 1.0)
+  faker (= 0.3.1)
   gravatar_image_tag (= 0.1.0)
   rails (= 3.0.0.rc)
   rspec (= 2.0.0.beta.18)
   rspec-rails (= 2.0.0.beta.18)
   spork (= 0.8.4)
   sqlite3-ruby (= 1.2.5)
+  will_paginate (= 3.0.pre)

app/controllers/users_controller.rb

@@ -3,7 +3,7 @@ class UsersController < ApplicationController
   before_filter :correct_user, :only => [:edit, :update]
 
   def index
-    @users = User.all
+    @users = User.paginate(:page => params[:page])
     @title = "All users"
   end
 

app/views/users/_user.html.erb

@@ -0,0 +1,4 @@
+<li>
+  <%= gravatar_for user, :size => 30 %>
+  <%= link_to user.name, user %>
+</li>

app/views/users/index.html.erb

@@ -1,10 +1,9 @@
 <h1>All users</h1>
 
+<%= will_paginate %>
+
 <ul class="users">
-  <% @users.each do |user| %>
-    <li>
-      <%= gravatar_for user, :size => 30 %>
-      <%= link_to user.name, user %>
-    </li>
-  <% end %>
-</ul>
+  <%= render @users %>
+</ul>
+
+<%= will_paginate %>

lib/tasks/sample_data.rake

@@ -0,0 +1,22 @@
+require 'faker'
+
+namespace :db do
+  desc "Fill database with sample data"
+  task :populate => :environment do
+    Rake::Task['db:reset'].invoke
+    User.create!(:name => "Example User",
+                 :email => "[email protected]",
+                 :password => "foobar",
+                 :password_confirmation => "foobar")
+    99.times do |n|
+      name = Faker::Name.name
+      email = "example-#{n+1}@railstutorial.org"
+      password = "password"
+      User.create!(:name => name,
+                   :email => email,
+                   :password => password,
+                   :password_confirmation => password)
+    end
+  end
+
+end

spec/controllers/users_controller_spec.rb

@@ -18,6 +18,10 @@
         @user = test_sign_in(Factory(:user))
         Factory(:user, :email => "[email protected]")
         Factory(:user, :email => "[email protected]")
+
+        30.times do
+          Factory(:user, :email => Factory.next(:email))
+        end
       end
 
       it "should be successful" do
@@ -32,10 +36,20 @@
 
       it "should have an element for each user" do
         get :index
-        User.all.each do |user|
+        User.paginate(:page => 1).each do |user|
           response.should have_selector('li', :content => user.name)
         end
       end
+
+      it "should paginate users" do
+        get :index
+        response.should have_selector('div.pagination')
+        response.should have_selector('span.disabled', :content => "Previous")
+        response.should have_selector('a', :href => "/users?page=2",
+                                           :content => "2")
+        response.should have_selector('a', :href => "/users?page=2",
+                                           :content => "Next")
+      end
     end
   end
 

spec/factories.rb

@@ -3,4 +3,8 @@
   user.email                 "[email protected]"
   user.password              "foobar"
   user.password_confirmation "foobar"
+end
+
+Factory.sequence :email do |n|
+  "person-#{n}@example.com"
 end