Add "print receiving worksheet" feature, for 'ordered' purchases

tailbone/views/purchases/core.py

@@ -258,6 +258,30 @@ class PurchaseView(MasterView):
                 fs.invoice_total,
             ])
 
+    def receiving_worksheet(self):
+        purchase = self.get_instance()
+        return self.render_to_response('receiving_worksheet', {
+            'purchase': purchase,
+        })
+
+    @classmethod
+    def defaults(cls, config):
+        route_prefix = cls.get_route_prefix()
+        url_prefix = cls.get_url_prefix()
+        permission_prefix = cls.get_permission_prefix()
+        model_key = cls.get_model_key()
+        model_title = cls.get_model_title()
+
+        cls._defaults(config)
+
+        # receiving worksheet
+        config.add_tailbone_permission(permission_prefix, '{}.receiving_worksheet'.format(permission_prefix),
+                                       "Print receiving worksheet for {}".format(model_title))
+        config.add_route('{}.receiving_worksheet'.format(route_prefix), '{}/{{{}}}/receiving-worksheet'.format(url_prefix, model_key))
+        config.add_view(cls, attr='receiving_worksheet', route_name='{}.receiving_worksheet'.format(route_prefix),
+                        permission='{}.receiving_worksheet'.format(permission_prefix))
+        
+
 
 def includeme(config):
     PurchaseView.defaults(config)