问题
This is my first django app and I was wondering if it is possible to have a general class which will be extended by all Views. For example
class GeneralParent:
def __init__(self):
#SETTING Up different variables
self.LoggedIn = false
def isLoggedIn(self):
return self.LoggedIn
class FirstView(TemplateView):
####other stuff##
def get_context_data(self, **kwargs):
context = super(IndexView, self).get_context_data(**kwargs)
allLeads = len(self.getAllLeads())
context['isLoggedIn'] = ####CALL GENEREAL PARENT CLASS METHOD###
return context
class SecondView(FormView):
####other stuff##
def get_context_data(self, **kwargs):
context = super(IndexView, self).get_context_data(**kwargs)
allLeads = len(self.getAllLeads())
context['isLoggedIn'] = ####CALL GENEREAL PARENT CLASS METHOD###
return context
Is this possible in django?
回答1:
Order of inheritance is important and calls of super cascade down the line of inheritance. You must account for any variables that may be passed down in inheritance in your __init__ methods.
The first inheritances methods will be called first, and the second as as the __init__ method of the first parent calls super (in order to call the __init__ of the second parent). GeneralParent must inherit from object or a class that inherits from object.
class GeneralParent(object):
def __init__(self,*args,**kwargs):
#SETTING Up different variables
super(GeneralParent,self).__init__(*args,**kwargs)
self.LoggedIn = false
def isLoggedIn(self):
return self.LoggedIn
class FirstView(GeneralParent,TemplateView):
####other stuff##
def get_context_data(self, **kwargs):
context = super(FirstView, self).get_context_data(**kwargs)
allLeads = len(self.getAllLeads())
context['isLoggedIn'] = ####CALL GENEREAL PARENT CLASS METHOD###
return context
class SecondView(GeneralParent,FormView):
####other stuff##
def get_context_data(self, **kwargs):
context = super(SecondView, self).get_context_data(**kwargs)
allLeads = len(self.getAllLeads())
context['isLoggedIn'] = ####CALL GENEREAL PARENT CLASS METHOD###
return context
来源：https://stackoverflow.com/questions/34971188/django-add-another-subclass-in-a-class-based-view