From ea89ee3032b6d4ae1b217fa0449348910f21ea8a Mon Sep 17 00:00:00 2001
From: Tony Thomas <01tonythomas@gmail.com>
Date: Sun, 14 Oct 2018 11:28:12 +0200
Subject: [PATCH] fix(#26) No more results with no prev results

---
 dashboard/core/bots/reports/views.py | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/dashboard/core/bots/reports/views.py b/dashboard/core/bots/reports/views.py
index e273977..ef21e3e 100644
--- a/dashboard/core/bots/reports/views.py
+++ b/dashboard/core/bots/reports/views.py
@@ -79,7 +79,7 @@ def build_filters(self, is_improvement=True) -> dict:
             'root_test__in': tests,
             'bot__in': bot,
             'browser__in': browsers,
-            'is_improvement': is_improvement
+            'is_improvement': is_improvement,
         }
 
 
@@ -91,7 +91,8 @@ def get_queryset(self):
         queryset = super(BotDataReportImprovementListView, self).get_queryset()
         filter_params = self.build_filters(is_improvement=True)
         limit = int(self.kwargs.get('limit', 10))
-        return queryset.filter(**filter_params).order_by('-delta')[:limit]
+        return queryset.filter(**filter_params).exclude(
+            prev_result__isnull=True).order_by('-delta')[:limit]
 
 
 class BotDataReportRegressionListView(ReportDataBaseListViewSerializer):
@@ -102,7 +103,8 @@ def get_queryset(self):
         queryset = super(BotDataReportRegressionListView, self).get_queryset()
         filter_params = self.build_filters(is_improvement=False)
         limit = int(self.kwargs.get('limit', 10))
-        return queryset.filter(**filter_params).order_by('-delta')[:limit]
+        return queryset.filter(**filter_params).exclude(
+            prev_result__isnull=True).order_by('-delta')[:limit]
 
 
 class TestPathList(ListAPIView):