Refactor fixes

app/controllers/supplier_controller.rb

@@ -98,7 +98,7 @@ class SupplierController < ApplicationController
 
   # POST /orders/1/is_being_processed
   def mark_order_in_process
-    @order = Order.find_by_supplier_id_and_id(current_supplier.id, params[:order_id])
+    @order = Order.find_by_supplier_id_and_id!(current_supplier.id, params[:order_id])
     @order.is_being_processed!
     render nothing: true
   end

app/models/order.rb

@@ -25,7 +25,7 @@ class Order
     }
   }], reduce_function: '_sum'
 
-  #view :by_supplier_id_and_id, key: [:supplier_id, :_id]
+  view :by_supplier_id_and_id, key: [:supplier_id, :_id] # Do not comment me out
 
   # Return all currently active orders for a given supplier
   def self.active_for_supplier(supplier_id)

app/views/suppliers/products/index.html.slim

@@ -53,7 +53,7 @@ script#products-category-template[type="text/html"]= mustache_template 'user/pro
             products: category.products,
             include_order_buttons: false
           }
-          result_html = Mustache.to_html($('#products-category-template').html(), obj)
+          result_html = Handlebars.compile($('#products-category-template').html())(obj)
           body.append(result_html)
         }
       })