cache pet images on items#show, in case that's what's being a super-slow jerkface

app/assets/javascripts/items/show.js

@@ -2,7 +2,8 @@
 
 var PREVIEW_SWF_ID = 'item-preview-swf',
   PREVIEW_SWF = document.getElementById(PREVIEW_SWF_ID),
-  speciesList = $('#item-preview a'),
+  speciesEls,
+  petTypeEls,
   customize_more_el = $('#customize-more'),
   MainWardrobe;
 
@@ -46,7 +47,7 @@ function PetType() {
 
   this.setAsCurrent = function () {
     PetType.current = this;
-    speciesList.filter('.current').removeClass('current');
+    petTypeEls.filter('.current').removeClass('current');
     this.link.addClass('current');
     customize_more_el.attr('href',
       'http://impress.openneo.net/wardrobe?species=' + this.species_id +
@@ -213,16 +214,40 @@ Preview.embed(PREVIEW_SWF_ID);
 Item.createFromLocation().setAsCurrent();
 Item.current.name = $('#item-name').text();
 
-PetType.createFromLink(speciesList.eq(Math.floor(Math.random()*speciesList.length))).setAsCurrent();
+// Choose only supported species, and remove the unsupported.
+var supportedSpeciesIds = $('#item-preview-species').attr('data-supported-species-ids').split(',');
+var supportedSpeciesIdPresenceMap = {};
+for(var i = 0; i < supportedSpeciesIds.length; i++) {
+  supportedSpeciesIdPresenceMap[supportedSpeciesIds[i]] = true;
+}
+speciesEls = $('#item-preview-species > li').filter(function() {
+  var supported = supportedSpeciesIdPresenceMap[this.getAttribute('data-id')];
+  if(!supported) this.parentNode.removeChild(this);
+  return supported;
+});
 
-speciesList.each(function () {
+// Choose random pet type for each species.
+speciesEls.each(function() {
+  var speciesPetTypeEls = $(this).find('.pet-type');
+  var chosen = speciesPetTypeEls.eq(Math.floor(Math.random()*speciesPetTypeEls.length));
+  speciesPetTypeEls.not(chosen).remove();
+});
+
+petTypeEls = speciesEls.find('.pet-type');
+
+// Choose random starting pet type
+PetType.createFromLink(petTypeEls.eq(Math.floor(Math.random()*petTypeEls.length))).setAsCurrent();
+
+// Setup pet type click behavior
+petTypeEls.each(function () {
   var el = $(this);
   PetType.createFromLink(el);
-}).live('click', function (e) {
-  e.preventDefault();
+}).click(function (e) {
   PetType.all[$(this).data('id')].setAsCurrent();
 });
 
+// Load the other pet type data in 5 seconds, to save database effort in case
+// the user decides to bounce.
 setTimeout($.proxy(Item.current, 'loadAllStandard'), 5000);
 
 window.MainWardrobe = {View: {Outfit: {setFlashIsReady: previewSWFIsReady}}}

app/assets/stylesheets/items/_show.sass

@@ -36,17 +36,18 @@ body.items-show
   #item-preview
     +clearfix
     
-    div
+    > div, > ul
       float: left
       
   #item-preview-species
+    display: block
     width: 400px
     
-    a, img
+    .pet-type, img
       height: 50px
       width: 50px
       
-    a
+    .pet-type
       +inline-block
       &.current
         background: $module-bg-color
@@ -59,6 +60,9 @@ body.items-show
           background: transparent
           outline-color: $error_border_color
 
+    ul, li
+      display: inline
+
   #item-preview-error
     display: none
     padding: 20px 10px 0

app/controllers/items_controller.rb

@@ -73,6 +73,11 @@ class ItemsController < ApplicationController
           @contributors_with_counts = @item.contributors_with_counts
         end
 
+        @supported_species_ids = @item.supported_species_ids
+        unless localized_fragment_exist?("items/show standard_species_images special_color=#{@item.special_color_id}")
+          @basic_colored_pet_types_by_species_id = PetType.special_color_or_basic(@item.special_color).includes_child_translations.group_by(&:species)
+        end
+
         @trading_closet_hangers_by_owned = {
           true => @item.closet_hangers.owned_trading.newest.includes(:user),
           false => @item.closet_hangers.wanted_trading.newest.includes(:user)

app/helpers/items_helper.rb

@@ -27,31 +27,21 @@ module ItemsHelper
     end
   end
 
-  def standard_species_images_key_for(item)
-    versions_count = 1 # TODO
-    "foo" # TODO
-  end
-
-  def standard_species_images_for(item)
-    build_on_pet_types(item.supported_species, item.special_color) do |pet_type|
-      image = pet_type_image(pet_type, :happy, :face)
-      attributes = {
-        'data-id' => pet_type.id,
-        'data-body-id' => pet_type.body_id
-      }
-      [:color, :species].each do |pet_type_attribute_name|
-        pet_type_attribute = pet_type.send(pet_type_attribute_name)
-        [:id, :name].each do |subattribute_name|
-          attributes["data-#{pet_type_attribute_name}-#{subattribute_name}"] =
-            pet_type_attribute.send(subattribute_name)
-        end
-      end
-      link_to(
-        image,
-        '#',
-        attributes
-      )
-    end
+  def standard_species_images_for(pet_types_by_species_id)
+    pet_types_by_species_id.to_a.sort_by { |s, pt| s.name }.map { |species, pet_types|
+      pet_type_images = pet_types.map { |pet_type|
+        image = pet_type_image(pet_type, :happy, :face)
+        content_tag(:li, image, 'class' => 'pet-type',
+                                'data-id' => pet_type.id,
+                                'data-body-id' => pet_type.body_id,
+                                'data-color-id' => pet_type.color.id,
+                                'data-color-name' => pet_type.color.name,
+                                'data-species-id' => pet_type.species.id,
+                                'data-species-name' => pet_type.species.name)
+      }.join.html_safe
+      content_tag(:li, content_tag(:ul, pet_type_images),
+                  'data-id' => species.id)
+    }.join.html_safe
   end
   
   def closet_list_verb(owned)

app/models/item.rb

@@ -154,6 +154,10 @@ class Item < ActiveRecord::Base
     @special_color ||= determine_special_color
   end
 
+  def special_color_id
+    special_color.try(:id)
+  end
+
   protected
   def determine_special_color
     I18n.with_locale(I18n.default_locale) do
@@ -187,21 +191,17 @@ class Item < ActiveRecord::Base
     write_attribute('species_support_ids', replacement)
   end
   
-  def supported_species
+  def supported_species_ids
     body_ids = swf_assets.select([:body_id]).map(&:body_id)
     
-    return Species.all if body_ids.include?(0)
+    return Species.select([:id]).map(&:id) if body_ids.include?(0)
     
     pet_types = PetType.where(:body_id => body_ids).select('DISTINCT species_id')
     species_ids = pet_types.map(&:species_id)
     
     # If there are multiple known supported species, it probably supports them
     # all. (I've never heard of only a handful of species being supported :P)
-    species_ids.size > 1 ? Species.all : Species.find(species_ids)
-  end
-  
-  def supported_species_ids
-    supported_species.map(&:id)
+    species_ids.size >= 2 ? Species.select([:id]).map(&:id) : species_ids
   end
   
   def support_species?(species)

app/models/pet_type.rb

@@ -22,22 +22,15 @@ class PetType < ActiveRecord::Base
   scope :includes_child_translations,
     lambda { includes({:color => :translations, :species => :translations}) }
 
-  def self.standard_pet_types_by_species_id
-    # If we include Color.basic in the query, rather than getting the ID array
-    # first, it'll do this as a big fat JOIN unnecessarily. On production,
-    # there are tons of pet types and translations to send down, so tons of
-    # duplicate data is sent and must be merged together properly, both of
-    # which take serious time. So, this is a surprisingly significant
-    # performance boost - though I was surprised and impressed that Rails
-    # includes relations as subqueries. That's cool.
-    basic_color_ids = Color.basic.select([:id]).map(&:id)
-    PetType.where(color_id: basic_color_ids).includes_child_translations.
-      group_by(&:species_id)
+  def self.special_color_or_basic(special_color)
+    color_ids = special_color ? [special_color.id] : Color.basic.select([:id]).map(&:id)
+    where(color_id: color_ids)
   end
   
   def self.standard_body_ids
     [].tap do |body_ids|
-      standard_pet_types_by_species_id.each do |species_id, pet_types|
+      # TODO: the nil hack is lame :P
+      special_color_or_basic(nil).group_by(&:species_id).each do |species_id, pet_types|
         body_ids.concat(pet_types.map(&:body_id))
       end
     end
@@ -45,7 +38,8 @@ class PetType < ActiveRecord::Base
 
   def self.random_basic_per_species(species_ids)
     random_pet_types = []
-    standards = self.standard_pet_types_by_species_id
+    # TODO: omg so lame :P
+    standards = special_color_or_basic(nil).group_by(&:species_id)
     species_ids.each do |species_id|
       pet_types = standards[species_id]
       random_pet_types << pet_types[rand(pet_types.size)] if pet_types

app/models/pet_type_observer.rb

@@ -0,0 +1,8 @@
+class PetTypeObserver < ActiveRecord::Observer
+  include FragmentExpiration
+  
+  def after_create(pet_type)
+    images_key = "items/show standard_species_images special_color=#{pet_type.color_id}"
+    expire_fragment_in_all_locales(images_key)
+  end
+end

app/views/items/show.html.haml

@@ -78,9 +78,10 @@
                                             :class => 'button'
 
 #item-preview
-  #item-preview-species
-    -# localized_cache random_standard_species_images_key do
-    = standard_species_images_for(@item)
+  %ul#item-preview-species{'data-supported-species-ids' => @supported_species_ids.join(',')}
+    -# TODO: filter by compatibility
+    - localized_cache "items/show standard_species_images special_color=#{@item.special_color_id}" do
+      = standard_species_images_for(@basic_colored_pet_types_by_species_id)
   #item-preview-error
   #item-preview-swf= t '.preview.requirements_not_met'
 

config/application.rb

@@ -20,7 +20,7 @@ module OpenneoImpressItems
     # config.plugins = [ :exception_notification, :ssl_requirement, :all ]
 
     # Activate observers that should always be running
-    config.active_record.observers = :contribution_observer, :item_observer, :user_sweeper
+    config.active_record.observers = :contribution_observer, :item_observer, :pet_type_observer, :user_sweeper
 
     # 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.