AttributeError：“ QuerySet”对象没有属性“ requests”

Question

I have the following models:

class App(models.Model):
    name                    = models.CharField(max_length=20)
    ...    

class Request(models.Model):
    ...
    app        = models.ForeignKey(App)
    ...

When trying the following:

a = App.objects.all().prefetch_related('request_set')

for r in a.requests:
    print r

It's giving:

AttributeError: 'QuerySet' object has no attribute 'requests'

Why is that?

Answer 1

您使用了错误的属性来访问您的应用程序的要求-你需要使用a.request_set （或设置related_name在ForeignKey定义是“要求”）。