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# -*- 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
|
GitWeb
