我想创建一个检查用户是否有任何通知的函数。如果有,则该数字应显示在导航栏中。
有人可以帮助我重构这个吗?
谢谢!
middleware.py:
def process_template_response(self, request, response):
if request.user.is_authenticated():
try:
notifications = Notification.objects.all_for_user(request.user).unread()
count = notifications.count()
context = {
"count": count
}
response = TemplateResponse(request, 'navbar.html', context)
return response
except:
pass
else:
pass
navbar.html:
<li >
<a href="{% url 'notifications_all' %}">
{% if count > 0 %}Notifications ({{ count }}){% else %}Notifications{% endif %}
</a>
</li>
答案 0 :(得分:1)
我之前有类似的工作,我认为你应该使用context_data
响应的属性:
class NotificationMiddleware(object):
def process_template_response(self, request, response):
if request.user.is_authenticated():
try:
notifications = Notification.objects.all_for_user(request.user).unread()
count = notifications.count()
response.context_data['count'] = count # I recomend you to use other name instead of 'count'
return response
except Exception, e:
print e # Fix possible errors
return response
else:
return response
然后,您需要在MIDDLEWARE_CLASSES
文件的settings
元组中注册此课程:
# settings.py
MIDDLEWARE_CLASSES = (
# Django middlewares
....
'yourapp.middleware.NotificationMiddleware',
)
上面的示例假设您的应用程序中有一个名为“yourapp”的middleware
文件夹。
最后,您应该可以在模板中使用{{ count }}
。