Merge pull request #302 from maxfordham/299-nullable-array-not-appear…

…ing-within-form

🐛 Fix display issue of nested widgets with nullable

src/ipyautoui/autoobject.py

@@ -121,11 +121,10 @@ def observe_show_null(self, on_change):
     def _show_null(self, yesno: bool):
         for k, v in self.di_boxes.items():
             if k in self.value.keys():
-                if not isinstance(self.value[k], (dict, list)):
-                    if pd.isnull(self.value[k]):
-                        v.layout.display = (lambda yesno: "" if yesno else "None")(yesno)
-                    else:
-                        v.layout.display = ""
+                if self.value[k] is None:
+                    v.layout.display = (lambda yesno: "" if yesno else "None")(yesno)
+                else:
+                    v.layout.display = ""
             else:
                 # If no value passed assume value is None
                 v.layout.display = (lambda yesno: "" if yesno else "None")(yesno)