为普通的get_context_data扩展通用视图类 [英] Extending generic view classes for common get_context_data
问题描述
def get_context_data( self,** kwargs):
#首先调用基本实现来获取上下文
context = super(MyListView,self).get_context_data(** kwargs)
#在房子里添加
上下文['house'] = self.get_object()。house
返回上下文
因为我不喜欢重复自己,我以为我可以创建一个扩展视图的类,然后我可以将所有的视图都放在新的扩展视图类上。事情是,我使用了4类视图:CreateView,UpdateView,ListView和DeleteView。我真的要为其中一个创建一个新的课程吗?
没有像djangobase视图类的东西?也许是更聪明的方式来做到这一点?非常感谢提前!
创建Mixin:
from django.views.generic.base import ContextMixin
class HouseMixin(ContextMixin):
def get_house(self):
#获取房子
返回房子
def get_context_data(self,** kwargs):
ctx = super(HouseMixin,self).get_context_data(** kwargs)
ctx [ 'house'] = self.get_house()
return ctx
然后在你的其他类你会使用多个继承:
class HouseEditView(HouseMixin,UpdateView):
pass
class HouseListView(HouseMixin,ListView):
pass
等等,然后所有这些意见将在上下文中具有 house
。
I constantly see myself having to add the same extra variable to the context of many of my views.
def get_context_data(self, **kwargs):
# Call the base implementation first to get a context
context = super(MyListView, self).get_context_data(**kwargs)
# Add in the house
context['house'] = self.get_object().house
return context
As I don't like repeating myself, I thought I could create a new class extending the view and then I could base all my views on the new extended view class. The thing is, there are 4 classes of views I use: CreateView, UpdateView, ListView and DeleteView. Do I really have to create a new class for each of one of them?
Isn't there something like a django "base" view class? Maybe a smarter way to do this? Many thanks in advance!
Create a Mixin:
from django.views.generic.base import ContextMixin
class HouseMixin(ContextMixin):
def get_house(self):
# Get the house somehow
return house
def get_context_data(self, **kwargs):
ctx = super(HouseMixin, self).get_context_data(**kwargs)
ctx['house'] = self.get_house()
return ctx
Then in your other classes you'd use multiple inheritance:
class HouseEditView(HouseMixin, UpdateView):
pass
class HouseListView(HouseMixin, ListView):
pass
and so on, then all these views will have house
in the context.
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