Handling special case with zero clicks

[prawokultury.git] / questions / views.py

diff --git a/questions/views.py b/questions/views.py
index b68d24b..43b812b 100644 (file)
--- a/questions/views.py
+++ b/questions/views.py
@@ -3,10 +3,12 @@
 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
 #
 from django.core.urlresolvers import reverse_lazy
+from django.db import models
+from django.shortcuts import get_object_or_404
 from django.views.generic import ListView
 from django.views.generic.edit import FormView
 from .forms import QuestionForm
-from .models import Question, Tag
+from .models import Question, Tag, TagCategory
 
 
 class QuestionFormView(FormView):
@@ -24,20 +26,37 @@ class QuestionListView(ListView):
         self.tag = None
         if 'tag' in request.GET:
             try:
-                self.tag = Tag.objects.get(slug=request.GET['tag'])
-            except Tag.DoesNotExist:
+                self.tag = Tag.objects.filter(items__question__published=True, slug=request.GET['tag'])[0]
+            except IndexError:
                 pass
         return super(QuestionListView, self).get(request, *args, **kwargs)
 
     def get_queryset(self):
         qs = Question.objects.filter(published=True
                 ).order_by('-published_at')
-        if 'tag' in self.request.GET:
-            qs = qs.filter(tags__slug=self.request.GET['tag'])
+        if self.tag:
+            qs = qs.filter(tags=self.tag)
+            self.tag.click_count += 1
+            self.tag.save()
         return qs
 
     def get_context_data(self, *args, **kwargs):
         context = super(QuestionListView, self).get_context_data(*args, **kwargs)
-        context['tags'] = Tag.objects.all()
         context['tag'] = self.tag
+        context['tag_categories'] = TagCategory.objects.all().annotate(click_count = models.Sum('tags__click_count'))
+        context['tag_lists'] = dict()
+        
+        tags = Tag.objects.filter(items__question__published=True
+            ).annotate(c=models.Count('items__tag')).order_by('category__slug', '-c', 'slug')
+        all_tag_clicks_count = Tag.objects.all().aggregate(models.Sum('click_count'))['click_count__sum']
+        annotated_categories = dict()
+        minimum_factor = 0.7
+        for category in context['tag_categories']:
+            annotated_categories[category.id] = category
+            category.factor =  '%.2f' % (minimum_factor + ((float(category.click_count) / all_tag_clicks_count) if all_tag_clicks_count else 0))
+        for tag in tags:
+            if tag.category:
+                category = annotated_categories[tag.category.id]
+                tag.factor = '%.2f' % (minimum_factor + ((float(tag.click_count) / category.click_count) if category.click_count else 0))
+            context['tag_lists'].setdefault(tag.category.id if tag.category else 0, []).append(tag)
         return context