setup sample data, users index with pagination

Gemfile

@@ -10,11 +10,15 @@ gem 'json'
 #for the user profile pic
 gem 'gravatar_image_tag'
 
+#for paginating through long lists
+gem 'will_paginate'
+
 group :development do
 	gem 'rspec-rails'
 	#gem 'annotate'
 	gem 'annotate', :git => 'git://github.com/ctran/annotate_models.git'
 	gem 'sqlite3' #doesn't work on Heroku+cedar stack
+	gem 'faker'
 end
 
 group :test do

Gemfile.lock

@@ -55,6 +55,8 @@ GEM
     factory_girl_rails (1.3.0)
       factory_girl (~> 2.2.0)
       railties (>= 3.0.0)
+    faker (1.0.1)
+      i18n (~> 0.4)
     gravatar_image_tag (1.0.0)
     hike (1.2.1)
     i18n (0.6.0)
@@ -137,6 +139,7 @@ GEM
       nokogiri (>= 1.2.0)
       rack (>= 1.0)
       rack-test (>= 0.5.3)
+    will_paginate (3.0.2)
 
 PLATFORMS
   ruby
@@ -145,6 +148,7 @@ DEPENDENCIES
   annotate!
   coffee-rails (~> 3.1.0)
   factory_girl_rails
+  faker
   gravatar_image_tag
   jquery-rails
   json
@@ -157,3 +161,4 @@ DEPENDENCIES
   sqlite3
   uglifier
   webrat
+  will_paginate

app/controllers/users_controller.rb

@@ -4,7 +4,7 @@ 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 => 25 %>
+	<%= link_to user.name, user %>	
+</li>

app/views/users/index.html.erb

@@ -1,10 +1,18 @@
 <h1>All users</h1>
 
+<%= will_paginate %>
+<%# will_paginate in a given controller automatically looks for an instance variable of the same name %>
 <ul class="users">
-	<% @users.each do |user| %>
-		<li>
-		<%= gravatar_for user, :size => 25 %>
-		<%= link_to user.name, user %>	
-		</li>
-	<% end %>
+
+	<%# METHOD 3 - works as long as its enumerable (can run .each) %>
+	<%= render @users %>
+
+	<%# @users.each do |user| %>
+		<%# METHOD 1 %>
+		<%#= render 'user', :user => user #manually coding it %>
+		<%# METHOD 2 %>
+		<%#= render user %>
+		<%#		yes, somehow rails knows to render the _user partial AND pass the user variable %>
+	<%# end %>
 </ul>
+<%= will_paginate %>

lib/tasks/sample_data.rake

@@ -0,0 +1,21 @@
+require 'faker'
+
+namespace :db do
+	desc 'Fill database with sample data'
+	task :populate => :environment do
+		Rake::Task['db:reset'].invoke #runs rake db:reset to clear database
+		User.create!(:name => "Example User", 
+					 :email => "example@e.org",
+					 :password => "foobar", 
+					 :password_confirmation => "foobar")
+		99.times do |n|
+			name = Faker::Name.name
+			email = "example-#{n+1}@railstutorial.org"
+			password = "boring"
+			User.create!(:name => name, 
+						:email => email,
+						:password => password,
+						:password_confirmation => password)
+		end
+	end
+end

spec/controllers/users_controller_spec.rb

@@ -17,6 +17,11 @@
 		@user = test_sign_in(Factory(:user))
 		Factory(:user, :email => "user@example2.com")
 		Factory(:user, :email => "darth@vader.com")
+
+		30.times do 
+			Factory(:user, :email => Factory.next(:email))
+		end
+
 	  end
 
 	  it "should allow access" do
@@ -31,10 +36,19 @@
 
 	  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

@@ -4,3 +4,7 @@
 	user.password					"foobar"
 	user.password_confirmation		"foobar"
 end
+
+Factory.sequence :email do |n|
+	"person-#{n}@example.com"
+end