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93 lines
3.0 KiB
93 lines
3.0 KiB
# -*- coding: utf-8 -*
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from datetime import date
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from random import choice, shuffle
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from django.db import models
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from django.db.models import Q
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from django.core.cache import cache
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class BiasedManager(models.Manager):
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def by_time(self, **kwargs):
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all = super(BiasedManager, self).get_query_set().filter(**kwargs)
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result = []
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for i in all:
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for j in range(i.often):
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result.append(i)
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return result
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def one(self, **kwargs):
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return choice(self.by_time(**kwargs))
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def by_often(self, **kwargs):
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result = self.by_time(**kwargs)
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shuffle(result)
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return result
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def create_for_paid(self, event, url, role):
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try:
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name = str(event.name)
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except UnicodeEncodeError, UnicodeDecodeError:
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name = event.url
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alt = u'%s_%s'%(name, role)
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return self.create(alt=alt, url=url, paid=True)
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class BannerGroupCached(models.Manager):
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def all(self):
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key = 'banner_group_all'
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result = cache.get(key)
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if not result:
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result = list(self.filter(public=True))
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cache.set(key, result, 90)
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return result
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def group_banners(self):
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key = 'banner_group_banners'
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result = cache.get(key)
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if not result:
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groups = self.all()
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today = date.today()
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result = {}
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for group in groups:
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result[group.slug] = list(group.banners.prefetch_related('urls', 'theme', 'country')\
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.filter(public=True, fr__lte=today)\
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.filter(Q(to__gte=today) | Q(to__isnull=True)))
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cache.set(key, result, 70)
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return result
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def top_page_banners(self):
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key = 'top_page_banners'
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result = cache.get(key)
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if not result:
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try:
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group = self.get(slug='top_page_banner', public=True)
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today = date.today()
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result = list(group.banners.prefetch_related('urls', 'theme', 'country')
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.filter(public=True, fr__lte=today)
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.filter(Q(to__gte=today) | Q(to__isnull=True)))
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except self.DoesNotExist:
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result = []
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cache.set(key, result, 70)
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return result
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class URLCached(models.Manager):
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def all(self):
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key = 'banner_url_all'
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result = cache.get(key)
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if not result:
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result = list(self.filter(public=True))
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cache.set(key, result, 150)
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return result
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class TopCached(models.Manager):
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def all(self):
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key = 'expo_b_top_all'
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result = cache.get(key)
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if not result:
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today = date.today()
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result = list(self.prefetch_related('theme', 'country', 'excluded_tags', 'excluded_cities').
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filter(fr__lte=today).filter(Q(to__gte=today) | Q(to__isnull=True)))
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cache.set(key, result, 80)
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return result
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