Minimum expiration warning

app/helpers/spina/shop/admin/stock/stock_orders_helper.rb

@@ -0,0 +1,15 @@
+module Spina::Shop
+  module Admin
+    module Stock
+      module StockOrdersHelper
+
+        def minimum_expiration_period_warning?(stock_order, date)
+          return false if Spina::Shop.config.minimum_expiration_period.blank?
+          return false if stock_order.ordered_at.blank?
+          (stock_order.ordered_at + Spina::Shop.config.minimum_expiration_period) > date
+        end
+
+      end
+    end
+  end
+end

app/views/spina/shop/admin/stock/stock_orders/show.html.haml

@@ -146,8 +146,11 @@
 
           %td.text-right
             - ordered.product.stock_level_adjustments.where(description: "StockOrder ##{@stock_order.id}").where("expiration_month IS NOT NULL AND expiration_year IS NOT NULL").group("expiration_month, expiration_year").pluck("expiration_month, expiration_year").map{|tht| Date.parse("1-#{tht[0]}-#{tht[1]}")}.sort.each do |date|
-              =l date, format: "%b '%y"
-              %br/
+              - if minimum_expiration_period_warning?(@stock_order, date)
+                .text-danger=l date, format: "%b '%y"
+              - else
+                =l date, format: "%b '%y"
+                %br/
 
           %td.text-right{style: 'width: 150px'}
             .progress.progress-bar-primary{class: ("progress-bar-danger" if ordered.received > ordered.quantity.to_d)}

lib/spina/shop.rb

@@ -17,6 +17,7 @@ module Shop
                     :holding_cost_percentage,
                     :default_stock_order_cost,
                     :future_demand_factor,
+                    :minimum_expiration_period,
                     :api_key
 
     # Default tax settings
@@ -47,6 +48,11 @@ module Shop
     # Default stock order cost
     self.default_stock_order_cost = 5
 
+    # Minimum expiration period
+    # Spina will show a warning when adding items with an expiration period
+    # smaller than the one set here
+    self.minimum_expiration_period = nil
+
     # Future demand factor
     # Demand calculations are multiplied by this factor to 
     # represent future demand