Adding a directory-style index to /gems so it's actually useful. Closes

#20

app/controllers/rubygems_controller.rb

@@ -9,7 +9,8 @@ def mine
   end
 
   def index
-    @gems = Rubygem.paginate :page => params[:page], :order => "name asc", :conditions => "name <> ''"
+    params[:letter] = "a" unless params[:letter]
+    @gems = Rubygem.name_starts_with(params[:letter]).paginate(:page => params[:page])
   end
 
   def show

app/helpers/rubygems_helper.rb

@@ -1,5 +1,10 @@
 module RubygemsHelper
+
   def link_to_page(text, url)
     link_to text, url unless url.blank?
   end
+
+  def link_to_directory
+    ("A".."Z").map { |letter| link_to(letter, rubygems_path(:letter => letter)) }.join
+  end
 end

app/views/rubygems/index.html.haml

@@ -1,6 +1,8 @@
 -@title = "all gems"
 -@subtitle = ""
 .grid_12
+  .directory
+    =link_to_directory
   =will_paginate @gems
   .gems
     -@gems.each do |gem|

config/environment.rb

@@ -35,14 +35,16 @@
 
 DO_NOT_REPLY = "donotreply@gemcutter.org"
 
-require 'lib/rubygems'
-require 'lib/rubygems/format'
-require 'lib/rubygems/indexer'
-require 'lib/rubygems/platform'
-require 'lib/rubygems/source_index'
-require 'lib/rubygems/version'
-require 'lib/indexer'
-require 'lib/core_ext/string'
+silence_warnings do
+  require 'lib/rubygems'
+  require 'lib/rubygems/format'
+  require 'lib/rubygems/indexer'
+  require 'lib/rubygems/platform'
+  require 'lib/rubygems/source_index'
+  require 'lib/rubygems/version'
+  require 'lib/indexer'
+  require 'lib/core_ext/string'
+end
 
 Gem.configuration.verbose = false
 

features/push.feature

@@ -10,6 +10,7 @@ Feature: Push Gems
       When I push the gem "RGem-1.2.3.gem" with my api key
       And I go to the homepage
       And I follow "list"
+      And I follow "R"
       And I follow "RGem (1.2.3)"
       Then I should see "RGem"
       And I should see "1.2.3"
@@ -23,6 +24,7 @@ Feature: Push Gems
       When I push the gem "BGem-3.0.0.gem" with my api key
       And I go to the homepage
       And I follow "list"
+      And I follow "B"
       And I follow "BGem (3.0.0)"
       Then I should see "BGem"
       And I should see "2.0.0"

public/stylesheets/application.css

@@ -192,12 +192,28 @@ h3 {
 .what {
   text-align: center;
   font-weight: bold;
-  text-align: center;
-  text-align: center;
   font-size: 1.1em;
   margin-bottom: 50px;
 }
 
+.directory {
+  text-align: center;
+  margin-bottom: 10px;
+}
+
+.directory a {
+  font-weight: bold;
+  font-size: 1.8em;
+  padding: 10px;
+  color: #ffffff;
+  background:#900000;
+}
+
+.directory a:hover {
+  background:#600000;
+  cursor: pointer;
+}
+
 .gems a {
   background:#900000;
   border-top:1px solid #C2C2C2;

test/functional/rubygems_controller_test.rb

@@ -209,9 +209,10 @@ def create_gem(owner, opts = {})
     should_redirect_to('the homepage') { root_url }
   end
 
-  context "On GET to index" do
+  context "On GET to index with no parameters" do
     setup do
-      @gems = (1..3).map { Factory(:rubygem) }
+      @gems = (1..3).map { |n| Factory(:rubygem, :name => "agem#{n}") }
+      Factory(:rubygem, :name => "zeta")
       get :index
     end
 
@@ -226,6 +227,21 @@ def create_gem(owner, opts = {})
     end
   end
 
+  context "On GET to index with a letter" do
+    setup do
+      @gems = (1..3).map { |n| Factory(:rubygem, :name => "agem#{n}") }
+      @zgem = Factory(:rubygem, :name => "zeta")
+      get :index, :letter => "z"
+    end
+    should_respond_with :success
+    should_render_template :index
+    should_assign_to(:gems) { [@zgem] }
+    should "render links" do
+      assert_contain @zgem.name
+      assert_have_selector "a[href='#{rubygem_path(@zgem)}']"
+    end
+  end
+
   context "On GET to show" do
     setup do
       @current_version = Factory(:version)

test/unit/helpers/rubygems_helper_test.rb

@@ -1,6 +1,13 @@
 require 'test_helper'
 
 class RubygemsHelperTest < ActionView::TestCase
+  should "create the directory" do
+    directory = link_to_directory
+    ("A".."Z").each do |letter|
+      assert_match rubygems_path(:letter => letter), directory
+    end
+  end
+
   context "creating linkset links" do
     setup do
       @linkset = Factory.build(:linkset)