如何在基于django类的视图中从同一个类中的另一个方法访问一个方法的变量

Question

I need to access the value of method variable from another method in django class based views. I have defined a variable as none in class variable. I have created two method inside the django class as like below

 class XXXXX(UpdateView):
    y = None

    def get_context_data(self,**kwargs):
        y = 10
        return super(xxxxx,self).get_context_data(**kwargs)

    def post(self,request,*args,**kwargs):
        # Here i want to access the value of variable y which is in get_context_data method
        # i have tried to access like **self.y**. But am getting the value as **None**

Can anyone help me to find what mistake i did

Answer 1

The reason is that get_context_data is called after post . When post runs, y hasn't been set yet.

You shouldn't be overriding post anyway. You haven't stated what you need to do with that variable, but there is certainly a more appropriate method to override.

Also, note that just assigning to y inside a method doesn't have any effect outside that method: you need to assign to self.y . And the class-level assignment is pointless, you should remove it.