Adjust current_position_nonexec logic

When filtering exec members from current staff,
only consider _current_ exec committee titles.

cdhweb/people/models.py

@@ -178,7 +178,8 @@ def project_manager_years(self):
     def _current_position_query(self):
         # query to find a person with a current cdh position
         # person *has* a position and it has no end date or date after today
-        return models.Q(positions__isnull=False) & (
+        today = date.today()
+        return models.Q(positions__start_date__lte=today) & (
             models.Q(positions__end_date__isnull=True)
             | models.Q(positions__end_date__gte=date.today())
         )
@@ -220,10 +221,12 @@ def current_position(self):
 
     def current_position_nonexec(self):
         """Return profiles for users with a current position, excluding
-        executive committee positions."""
-        return self.filter(
-            models.Q(self._current_position_query())
-            & ~models.Q(positions__title__title__in=self.exec_committee_titles)
+        current executive committee positions."""
+        cpq = self._current_position_query()
+        return (
+            self.filter(cpq)
+            .annotate(current_position_title=models.F("positions__title__title"))
+            .exclude(current_position_title__in=self.exec_committee_titles)
         )
 
     def order_by_position(self):