Adding product property filter to shop page

app/assets/javascripts/darkswarm/filters/properties_of.js.coffee

@@ -0,0 +1,7 @@
+Darkswarm.filter 'propertiesOf', ->
+  (objects)->
+    properties = {}
+    for object in objects
+      for property in object.properties
+        properties[property.id] = property
+    properties

app/assets/javascripts/darkswarm/services/products.js.coffee

@@ -1,27 +1,28 @@
-Darkswarm.factory 'Products', ($resource, Enterprises, Dereferencer, Taxons, Cart, Variants) ->
+Darkswarm.factory 'Products', ($resource, Enterprises, Dereferencer, Taxons, Properties, Cart, Variants) ->
   new class Products
     constructor: ->
       @update()
-    
+
     # TODO: don't need to scope this into object
     # Already on object as far as controller scope is concerned
     products: null
     loading: true
 
     update: =>
-      @loading = true 
+      @loading = true
       @products = $resource("/shop/products").query (products)=>
         @extend() && @dereference()
-        @registerVariants() 
+        @registerVariants()
         @registerVariantsWithCart()
         @loading = false
       @
-    
+
     dereference: ->
       for product in @products
         product.supplier = Enterprises.enterprises_by_id[product.supplier.id]
         Dereferencer.dereference product.taxons, Taxons.taxons_by_id
-    
+        Dereferencer.dereference product.properties, Properties.properties_by_id
+
     # May return different objects! If the variant has already been registered
     # by another service, we fetch those
     registerVariants: ->
@@ -45,7 +46,7 @@ Darkswarm.factory 'Products', ($resource, Enterprises, Dereferencer, Taxons, Car
           prices = (v.price for v in product.variants)
           product.price = Math.min.apply(null, prices)
         product.hasVariants = product.variants?.length > 0
-        
+
         product.primaryImage = product.images[0]?.small_url if product.images
         product.primaryImageOrMissing = product.primaryImage || "/assets/noimage/small.png"
         product.largeImage = product.images[0]?.large_url if product.images

app/assets/javascripts/darkswarm/services/properties.js.coffee

@@ -0,0 +1,9 @@
+Darkswarm.factory "Properties", (properties)->
+  new class Properties
+    # Populate ProductProperties.properties from json in page.
+    properties: properties
+    properties_by_id: {}
+    constructor: ->
+      # Map properties to id/object pairs for lookup.
+      for property in @properties
+        @properties_by_id[property.id] = property