From d096909a95debec5606cf3563737a0a24fc52cee Mon Sep 17 00:00:00 2001
From: Lance Edgar <ledgar@techsupport.coop>
Date: Fri, 8 Mar 2019 14:33:57 -0600
Subject: [PATCH] Expose "true cost" and "true margin" columns for products
 grid

---
 tailbone/views/products.py | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/tailbone/views/products.py b/tailbone/views/products.py
index 3369e3e2..eb34839a 100644
--- a/tailbone/views/products.py
+++ b/tailbone/views/products.py
@@ -97,6 +97,8 @@ class ProductsView(MasterView):
         'department',
         'vendor',
         'cost',
+        'true_cost',
+        'true_margin',
         'regular_price',
         'current_price',
     ]
@@ -234,6 +236,21 @@ class ProductsView(MasterView):
         g.sorters['subdepartment'] = g.make_sorter(model.Subdepartment.name)
         g.sorters['vendor'] = g.make_sorter(model.Vendor.name)
 
+        ProductTrueCost = orm.aliased(model.ProductVolatile)
+        ProductTrueMargin = orm.aliased(model.ProductVolatile)
+
+        # true_cost
+        g.set_joiner('true_cost', lambda q: q.outerjoin(ProductTrueCost))
+        g.set_filter('true_cost', ProductTrueCost.true_cost)
+        g.set_sorter('true_cost', ProductTrueCost.true_cost)
+        g.set_renderer('true_cost', self.render_true_cost)
+
+        # true_margin
+        g.set_joiner('true_margin', lambda q: q.outerjoin(ProductTrueMargin))
+        g.set_filter('true_margin', ProductTrueMargin.true_margin)
+        g.set_sorter('true_margin', ProductTrueMargin.true_margin)
+        g.set_renderer('true_margin', self.render_true_margin)
+
         # on_hand
         g.set_sorter('on_hand', model.ProductInventory.on_hand)
         g.set_filter('on_hand', model.ProductInventory.on_hand)
@@ -455,6 +472,20 @@ class ProductsView(MasterView):
             return ""
         return "${:0.2f}".format(cost.unit_cost)
 
+    def render_true_cost(self, product, field):
+        if not product.volatile:
+            return ""
+        if product.volatile.true_cost is None:
+            return ""
+        return "${:0.3f}".format(product.volatile.true_cost)
+
+    def render_true_margin(self, product, field):
+        if not product.volatile:
+            return ""
+        if product.volatile.true_margin is None:
+            return ""
+        return "{:0.3f} %".format(product.volatile.true_margin * 100)
+
     def render_on_hand(self, product, column):
         inventory = product.inventory
         if not inventory: