Add volumes page

app/assets/stylesheets/application.css.scss

@@ -5,5 +5,7 @@
 @import 'neat';
 
 @import 'global';
+@import 'tables';
 @import 'navigation';
 @import 'home';
+@import 'volumes';

app/assets/stylesheets/global.css.scss

@@ -1,6 +1,8 @@
 @import url(http://fonts.googleapis.com/css?family=Raleway);
 @import url(http://fonts.googleapis.com/css?family=Open%20Sans);
 
+$blue: #2C98C8;
+
 html {
   height: 100%;
 }

app/assets/stylesheets/navigation.css.scss

@@ -18,7 +18,7 @@ nav {
     font-variant: small-caps;
 
     &:hover {
-      color: #2C98C8;
+      color: $blue;
     }
   }
 

app/assets/stylesheets/tables.css.scss

@@ -0,0 +1,29 @@
+table {
+  max-width: 800px;
+  min-width: 450px;
+
+  .center {
+    text-align: center;
+  }
+}
+
+th {
+  border-bottom: 1px solid #bbb;
+}
+
+td {
+  padding: 8px;
+  line-height: 1;
+
+  &:not(.center) {
+    padding-left: 20px;
+  }
+}
+
+tbody tr {
+  border-bottom: 1px solid #ddd;
+
+  &:hover {
+    background-color: tint($blue, 30%);
+  }
+}

app/assets/stylesheets/volumes.css.scss

@@ -0,0 +1,5 @@
+table {
+  margin-top: 30px;
+  margin-left: auto;
+  margin-right: auto;
+}

app/controllers/volumes_controller.rb

@@ -0,0 +1,7 @@
+class VolumesController < ApplicationController
+  respond_to :html
+
+  def index
+    @volumes = Volume.sort_by_number_desc.decorate
+  end
+end

app/decorators/volume_decorator.rb

@@ -0,0 +1,11 @@
+class VolumeDecorator < ApplicationDecorator
+  delegate :number, :year, :isbn
+
+  def name
+    "Nikephoros #{roman_numeral}"
+  end
+
+  def roman_numeral
+    RomanNumerals.to_roman(number.to_i)
+  end
+end

app/views/layouts/application.html.haml

@@ -16,7 +16,7 @@
           %h1= link_to 'Nikephoros', '/'
         .pages
           %ul
-            %li= link_to 'Volumes', '#'
+            %li= link_to 'Volumes', volumes_path
             %li= link_to 'Authors', '#'
             %li= link_to 'Articles', '#'
 

app/views/volumes/index.html.haml

@@ -0,0 +1,11 @@
+%table
+  %thead
+    %tr
+      %th= t('volume')
+      %th= t('year')
+      %th= t('isbn')
+  %tbody
+    = content_tag_for(:tr, @volumes) do |volume|
+      %td= volume.name
+      %td{ class: :center }= volume.year
+      %td= volume.isbn

config/application.rb

@@ -15,19 +15,20 @@ module Nikephoros
   class Application < Rails::Application
     config.active_record.default_timezone = :utc
 
-  config.generators do |generate|
-    generate.helper false
-    generate.javascript_engine false
-    generate.request_specs false
-    generate.routing_specs false
-    generate.stylesheets false
-    generate.test_framework :rspec
-    generate.view_specs false
-  end
+    config.generators do |generate|
+      generate.helper false
+      generate.javascript_engine false
+      generate.request_specs false
+      generate.routing_specs false
+      generate.stylesheets false
+      generate.test_framework :rspec
+      generate.view_specs false
+    end
 
     # Settings in config/environments/* take precedence over those specified here.
     # Application configuration should go into files in config/initializers
     # -- all .rb files in that directory are automatically loaded.
+    config.autoload_paths << File.join(config.root, 'lib')
 
     # Set Time.zone default to the specified zone and make Active Record auto-convert to this zone.
     # Run "rake -D time" for a list of tasks for finding time zone names. Default is UTC.

config/initializers/draper.rb

@@ -1 +1,2 @@
 Draper::CollectionDecorator.delegate :reorder, :page, :current_page, :total_pages, :limit_value, :total_count, :num_pages
+Draper::Decorator.delegate :id, :to_key

config/locales/en.yml

@@ -9,3 +9,7 @@ en:
       default: '%a, %b %-d, %Y at %r'
       date: '%b %-d, %Y'
       short: '%B %d'
+
+  volume: Volume
+  year: Year
+  isbn: ISBN

config/routes.rb

@@ -3,6 +3,7 @@
   ActiveAdmin.routes(self)
 
   resources :articles
+  resources :volumes
 
   get '/', controller: 'high_voltage/pages', action: :show, id: 'home'
 end

lib/roman_numerals.rb

@@ -0,0 +1,40 @@
+class RomanNumerals
+  CONVERSIONS = {
+    0 => '',
+    1 => 'I',
+    2 => 'II',
+    3 => 'III',
+    4 => 'IV',
+    5 => 'V',
+    6 => 'VI',
+    7 => 'VII',
+    8 => 'VIII',
+    9 => 'IX',
+    10 => 'X',
+    20 => 'XX',
+    30 => 'XXX',
+    40 => 'XL',
+    50 => 'L',
+    60 => 'LX',
+    70 => 'LXX',
+    80 => 'LXXX',
+    90 => 'XC',
+    100 => 'C',
+    200 => 'CC',
+    300 => 'CCC',
+    400 => 'CD',
+    500 => 'D'
+  }
+
+  def self.to_roman(num)
+    str = ''
+
+    str << CONVERSIONS[convert_for_power(num, 100)]
+    str << CONVERSIONS[convert_for_power(num, 10)]
+    str << CONVERSIONS[convert_for_power(num, 1)]
+  end
+
+  def self.convert_for_power(num, power)
+    ((num / power) % 10) * power
+  end
+end

spec/features/volumes_spec.rb

@@ -0,0 +1,13 @@
+require 'spec_helper'
+
+feature 'visiting the volumes page' do
+  scenario 'user sees a list of volumes' do
+    volume = FactoryGirl.create(:volume).decorate
+
+    visit volumes_path
+
+    expect(page).to have_css('td', text: volume.roman_numeral)
+    expect(page).to have_css('td', text: volume.year)
+    expect(page).to have_css('td', text: volume.isbn)
+  end
+end