我一直在试验Django的基于类的视图,并试图编写一个简单的基于类的视图来处理request
中的某些信息,以便“处理器”方法可以使用处理过的信息。使用基于类的视图来处理信息?
我似乎并没有完全理解文档所说的内容,我不确定这应该是Mixin,通用视图还是其他内容。我想制作一个像这样的类:
class MyNewGenericView(View):
redirect_on_error = 'home'
error_message = 'There was an error doing XYZ'
def dispatch(self, request, *args, **kwargs):
try:
self.process_information(request)
# self.process_information2(request)
# self.process_information3(request)
# etc...
except ValueError:
messages.error(request, self.error_message)
return redirect(self.redirect_on_error)
return super(MyNewGenericView, self).dispatch(request, *args, **kwargs)
def process_information(self, request):
# Use get/post information and process it using
# different models, APIs, etc.
self.useful_information1 = 'abc'
self.useful_information2 = 'xyz'
def get_extra_info(self):
# Get some extra information on something
return {'foo':'bar'}
这将允许有人写这样一个观点:
class MyViewDoesRealWork(MyNewGenericView):
def get(self, request, some_info):
return render(request, 'some_template.html',
{'info':self.useful_information1})
def post(self, request, some_info):
# Store some information, maybe using get_extra_info
return render(request, 'some_template.html',
{'info':self.useful_information1})
是上面的代码,以正确的方式去?有没有更简单/更好的方法来做到这一点?这是否会阻止上述功能在另一个通用视图中使用(例如,内置的通用视图)?
如果您认为有更好的方法,请发表一个答案。 – Umang