bar chart uses most recent election for jurisdiction

Author: Eric Tsai

src/election_anomaly/__init__.py

@@ -1050,15 +1050,15 @@ def bar(
         hierarchy = db.get_jurisdiction_hierarchy(
             self.session, jurisdiction_id, most_granular_id
         )
-        results_info = db.get_datafile_info(self.session, self.d["results_file_short"])
+        election_id = db.most_recent_election(self.session, jurisdiction_id)
         # bar chart always at one level below top reporting unit
         agg_results = a.create_bar(
             self.session,
             jurisdiction_id,
             hierarchy[1],
             contest_type,
             contest,
-            results_info[1],
+            election_id,
             False,
         )
         if fig_type:

src/election_anomaly/database/__init__.py

@@ -1207,3 +1207,17 @@ def get_candidate_votecounts(session, election_id, top_ru_id, subdivision_type_i
     result_df = pd.DataFrame(result)
     result_df.columns = result.keys()
     return result_df
+
+
+def most_recent_election(session, jurisdiction_id):
+    q = session.execute(
+        f"""
+        SELECT  "Election_Id"
+        FROM    _datafile d
+                JOIN "Election" e on d."Election_Id" = e."Id"
+        WHERE   "ReportingUnit_Id" = 274
+        ORDER BY "Name" desc
+        LIMIT   1
+    """
+    ).fetchall()
+    return q[0][0]