Fix image loader bug which caused broken links

src/scripts/controllers/crafting_grid_controller.coffee

@@ -15,7 +15,7 @@ module.exports = class CraftingGridController extends BaseController
 
     constructor: (options={})->
         if not options.model? then throw new Error 'options.model is required'
-        options.imageLoader ?= new ImageLoader default:'/images/unknown.png'
+        options.imageLoader ?= new ImageLoader defaultUrl:'/images/unknown.png'
         options.templateName = 'crafting_grid'
         super options
 

src/scripts/controllers/crafting_table_controller.coffee

@@ -17,7 +17,7 @@ module.exports = class CraftingTableController extends BaseController
     constructor: (options={})->
         if not options.model? then throw new Error 'options.model is required'
         if not options.modPack? then throw new Error 'options.modPack is required'
-        options.imageLoader ?= new ImageLoader default:'/images/unknown.png'
+        options.imageLoader ?= new ImageLoader defaultUrl:'/images/unknown.png'
         options.templateName = 'crafting_table'
         super options
 
@@ -35,7 +35,9 @@ module.exports = class CraftingTableController extends BaseController
     # BaseController Overrides #####################################################################
 
     onDidRender: ->
-        @gridController = @addChild CraftingGridController, '.view__crafting_grid', model:@model.grid
+        @gridController = @addChild CraftingGridController, '.view__crafting_grid',
+            model: @model.grid
+            imageLoader: @imageLoader
 
         @$multiplier     = @$('.multiplier')
         @$next           = @$('.next')

src/scripts/controllers/image_loader.coffee

@@ -12,13 +12,13 @@ All rights reserved.
 module.exports = class ImageLoader
 
     constructor: (options={})->
-        options.defaultUrl   ?= ''
+        options.defaultUrl   ?= null
         options.onLoading    ?= -> @hide()
         options.onLoad       ?= -> @show()
 
-        @defaultUrl   = options.defaultUrl
-        @onLoading    = options.onLoading
-        @onLoad       = options.onLoad
+        @defaultUrl = options.defaultUrl
+        @onLoading  = options.onLoading
+        @onLoad     = options.onLoad
 
         @_images = {}
 
@@ -45,10 +45,10 @@ module.exports = class ImageLoader
         $el.data 'isLoading', true
         $el.data 'isLoaded', false
 
-        if data.isLoaded?
+        if data.isLoaded
             @_loadImageIntoElement data.imageUrl, $el
         else
-            if @defaultUrl? then $el.attr 'src', @defaultUrl
+            $el.removeAttr 'src'
             if data.elements.indexOf($el) is -1 then data.elements.push $el
 
         return this
@@ -59,9 +59,10 @@ module.exports = class ImageLoader
             data = imageUrl:imageUrl, elements:[], image:new Image, isLoaded:false
             @_images[imageUrl] = data
 
-            data.image        = new Image
-            data.image.onload = => @_onImageLoaded data
-            data.image.src    = imageUrl
+            data.image         = new Image
+            data.image.onload  = => @_onImageLoaded data
+            data.image.onerror = => @_onImageError data
+            data.image.src     = imageUrl
 
         return data
 
@@ -74,6 +75,16 @@ module.exports = class ImageLoader
         data.elements = []
         data.isLoaded = true
 
+    _onImageError: (data)->
+        if @defaultUrl?
+            data.imageUrl = @defaultUrl
+
+            for $el in data.elements
+                @_loadImageIntoElement @defaultUrl, $el
+
+        data.elements = []
+        data.isLoaded = true
+
     _loadImageIntoElement: (imageUrl, $el)->
         $el.data 'isLoading', false
         $el.data 'isLoaded', true

src/scripts/controllers/item_page_controller.coffee

@@ -22,6 +22,8 @@ module.exports = class ItemPageController extends BaseController
         options.templateName  = 'item_page'
         super options
 
+        @imageLoader = options.imageLoader
+
     # Event Methods ################################################################################
 
     onToolsBoxToggled: ->
@@ -55,8 +57,9 @@ module.exports = class ItemPageController extends BaseController
             title:       "Items you'll need"
 
         @craftingTableController = @addChild CraftingTableController, '.view__crafting_table',
-            model: @model.table
-            modPack: @model.modPack
+            imageLoader: @imageLoader
+            model:       @model.table
+            modPack:     @model.modPack
 
         @modPackController = @addChild ModPackController, '.view__mod_pack', model:@model.modPack