Fix dynamic analysis specification listing error for empty excel columns

CHANGES.rst

@@ -4,6 +4,7 @@ Changelog
 2.0.0 (unreleased)
 ------------------
 
+- #1820 Fix dynamic analysis specification listing error for empty excel columns
 - #1819 Fix rejection report is attached as a ".bin" file in notification email
 - #1817 Fix duplicated rejection reasons in rejection viewlet (sample view)
 - #1815 Hide unit display after fields in manage analyses listing

src/bika/lims/browser/dynamic_analysisspec.py

@@ -20,6 +20,8 @@
 
 import collections
 
+import six
+
 from bika.lims import _
 from bika.lims import api
 from senaite.app.listing.view import ListingView
@@ -68,7 +70,7 @@ def update(self):
     def before_render(self):
         super(DynamicAnalysisSpecView, self).before_render()
 
-    def make_empty_item(self, **kw):
+    def make_empty_item(self, record):
         """Create a new empty item
         """
         item = {
@@ -80,11 +82,18 @@ def make_empty_item(self, **kw):
             "disabled": False,
             "state_class": "state-active",
         }
-        item.update(**kw)
+        for k, v in record.items():
+            # ensure keyword dictionary keys contains only strings
+            if not self.is_string(k):
+                continue
+            item[k] = v
         return item
 
+    def is_string(self, value):
+        return isinstance(value, six.string_types)
+
     def folderitems(self):
         items = []
         for record in self.specs:
-            items.append(self.make_empty_item(**record))
+            items.append(self.make_empty_item(record))
         return items