performance: compute queries in context (not in every nested templates)

panikweb/views.py

@@ -182,9 +182,9 @@ class News(TemplateView):
 
     def get_context_data(self, **kwargs):
         context = super(News, self).get_context_data(**kwargs)
-        context['newsImaged'] = NewsItem.objects.all().exclude(image__isnull=True).exclude(image__exact='').order_by('-datetime')[:3]
-        context['news'] = NewsItem.objects.all().order_by('-datetime')[:60]
-        context['categories'] = NewsCategory.objects.all()
+        context['newsImaged'] = list(NewsItem.objects.all().exclude(image__isnull=True).exclude(image__exact='').order_by('-datetime')[:3])
+        context['news'] = list(NewsItem.objects.all().order_by('-datetime')[:60])
+        context['categories'] = list(NewsCategory.objects.all())
         context['player'] = audioPlayer()
         return context