作为一个非专业的Python程序员,我正在寻找有关扩展Django的SingleObjectMixin类的get_object方法的方式的反馈.
对于我的大多数细节视图,使用pk或slugfield进行查找很好 - 但在某些情况下,我需要根据其他(唯一)字段检索对象,例如"username".我将Django的DetailView子类化,并修改了get_object方法,如下所示:
# extend the method of getting single objects, depending on model
def get_object(self, queryset=None):
if self.model != mySpecialModel:
# Call the superclass and do business as usual
obj = super(ObjectDetail, self).get_object()
return obj
else:
# add specific field lookups for single objects, i.e. mySpecialModel
if queryset is None:
queryset = self.get_queryset()
username = self.kwargs.get('username', None)
if username is not None:
queryset = queryset.filter(user__username=username)
# If no username defined, it's an error.
else:
raise AttributeError(u"This generic detail …