1 files changed, 30 insertions, 0 deletions
diff --git a/gentoo_ads/ads/views.py b/gentoo_ads/ads/views.py
new file mode 100644
index 0000000..c98968d
--- /dev/null
+++ b/gentoo_ads/ads/views.py
@@ -0,0 +1,30 @@
+# -*- coding: utf-8 -*-
+# Create your views here.
+
+from django.shortcuts import render_to_response
+from django.conf import settings
+from random import randint
+
+def serve_ads(request):
+	sample = _weighted_random_sample(settings.ADS_STRUCT)
+	return render_to_response('ads.html', {'ads': sample, 'MEDIA_URL': settings.MEDIA_URL,})
+
+def _weighted_random_sample(ads):
+	ads_out = []
+	
+	for i in xrange(settings.ADS_LENGTH):
+		indices = [a['weight'] for a in ads]
+		s = sum(indices)
+		r = randint(0, s-1)
+		cur_total = 0
+
+		for ad_i in xrange(len(ads)):
+			ad = ads[ad_i]
+			cur_total += ad['weight']
+			
+			if r < cur_total:
+				ads_out.append(ad)
+				ads = ads[:ad_i] + ads[ad_i + 1:]
+				break
+	
+	return ads_out	
+\ No newline at end of file