added update bag line support

src/eadapters/budy_a.py

@@ -314,9 +314,15 @@ def add_bag_line(self, product_id, quantity = 1, bag_id = None, *args, **kwargs)
             quantity,
             size = size,
             scale = scale,
-            meta = meta,
+            meta = meta
         )
 
+    def update_bag_line(self, bag_line, bag_id = None, *args, **kwargs):
+        self._ensure_bag()
+        bag_id = bag_id or self.bag_key
+        bag = models.BDBag.get_l(key = bag_id)
+        bag.update_line_s(bag_line)
+
     def remove_bag_line(self, bag_line_id, bag_id = None, *args, **kwargs):
         self._ensure_bag()
         bag_id = bag_id or self.bag_key

src/eadapters/models/bag.py

@@ -20,6 +20,13 @@ class EBag(base.EBase):
         )
     )
 
+    @classmethod
+    def _build(cls, model, map):
+        super(EBag, cls)._build(model, map)
+
+        lines = model.get("lines", [])
+        model["quantity"] = sum([line["quantity"] for line in lines])
+
     @property
     def quantity(self):
         return sum([line.quantity for line in self.lines])

src/eadapters/models/budy/bd_bag.py

@@ -61,6 +61,19 @@ def add_line_s(
         line = bd_bag_line.BDBagLine.wrap(line)
         return line
 
+    @bd_common.handle_error
+    def update_line_s(self, line):
+        api = self._get_api()
+        item = bd_bag_line.BDBagLine(**line)
+        item = item.unwrap(default = True)
+        line = api.add_update_line_bag(
+            self.key,
+            line,
+            increment = False
+        )
+        line = bd_bag_line.BDBagLine.wrap(line)
+        return line
+
     @bd_common.handle_error
     def remove_line_s(self, line_id):
         api = self._get_api()