notify when virus is empty

src/viralhostrange/viralhostrangedb/business_process.py

@@ -163,7 +163,7 @@ class MessageImportationObserver(ImportationObserver):
             virus=str(virus),
             row_id=str(row_id),
         )
-        if reason:
+        if reason or reason_id:
             msg = self.reason_to_str(msg, reason, reason_id)
         self.add_message(
             self.request,
@@ -402,6 +402,12 @@ def __parse_file(file, importation_observer: ImportationObserver = None, sheet_n
                     row_id=row_id,
                     col_id=id_col + start_at,
                 )
+            elif id_col > 0 and importation_observer:
+                importation_observer.notify_virus_error(
+                    sub_row[0],
+                    row_id,
+                    reason_id=ImportationObserver.EMPTY_NAME,
+                )
     if input_file is not None:
         input_file.close()