first routines with polars

rowers/views/analysisviews.py

@@ -296,7 +296,10 @@ def analysis_new(request,
             df = cpdata(tw, options)
         options['savedata'] = False
         request.session['options'] = options
-        response = HttpResponse(df.to_csv())
+        try:
+            response = HttpResponse(df.to_csv())
+        except AttributeError:
+            response = HttpResponse(df.write_csv())
         code = str(uuid4())
         filename = code+'.csv'
         chartform.fields['savedata'].initial = False
@@ -568,7 +571,7 @@ def flexalldata(workouts, options):
         workstrokesonly = not includereststrokes
         columns = [xparam, yparam1, yparam2, 'spm', 'driveenergy', 'distance']
         ids = [int(w.id) for w in workouts]
-        df = dataprep.getsmallrowdata_db(columns, ids=ids,
+        df = dataprep.getsmallrowdata_pl(columns, ids=ids,
                                          workstrokesonly=workstrokesonly,
                                          doclean=True,
                                          )