Adds API endpoint for installing stock items into other stock items

- Requires more filtering for the Part API
- Adds more BOM related functionality for Part model
- Removes old server-side form

InvenTree/stock/api.py

@@ -109,6 +109,31 @@ class StockItemSerialize(generics.CreateAPIView):
         return context
 
 
+class StockItemInstall(generics.CreateAPIView):
+    """
+    API endpoint for installing a particular stock item into this stock item.
+
+    - stock_item.part must be in the BOM for this part
+    - stock_item must currently be "in stock"
+    - stock_item must be serialized (and not belong to another item)
+    """
+
+    queryset = StockItem.objects.none()
+    serializer_class = StockSerializers.InstallStockItemSerializer
+
+    def get_serializer_context(self):
+
+        context = super().get_serializer_context()
+        context['request'] = self.request
+
+        try:
+            context['item'] = StockItem.objects.get(pk=self.kwargs.get('pk', None))
+        except:
+            pass
+
+        return context
+
+
 class StockAdjustView(generics.CreateAPIView):
     """
     A generic class for handling stocktake actions.
@@ -1256,6 +1281,7 @@ stock_api_urls = [
     # Detail views for a single stock item
     url(r'^(?P<pk>\d+)/', include([
         url(r'^serialize/', StockItemSerialize.as_view(), name='api-stock-item-serialize'),
+        url(r'^install/', StockItemInstall.as_view(), name='api-stock-item-install'),
         url(r'^.*$', StockDetail.as_view(), name='api-stock-detail'),
     ])),