Defaulting the quantity fields to nil

app/views/shop/shop/_products.html.haml

@@ -33,7 +33,7 @@
           %td 
             %span{"ng-show" => "(product.variants.length == 0)"}
               %input{type: :number, 
-              value: 0, 
+              value: nil, 
               min: 0,
               max: "{{product.on_demand && 9999 || product.count_on_hand }}",
               name: "variants[{{product.master.id}}]", 

app/views/shop/shop/_variant.html.haml

@@ -4,7 +4,7 @@
 %td {{variant.options_text}}
 %td 
   %input{type: :number, 
-  value: 0, 
+  value: nil, 
   min: 0, 
   max: "{{variant.on_demand && 9999 || variant.count_on_hand }}",
   name: "variants[{{variant.id}}]", id: "variants_{{variant.id}}"}