TypeError：Init只需要1个位置参数

Question

我正在使用Class Based Views来呈现我的模板。这是我到目前为止的代码：

Views.py：

class CashFlowView(TemplateView): 
    template_name = "visualization/cash_flow.html" 

    def get_context_data(self, **kwargs): 
     context = super(CashFlowView, self).get_context_data(**kwargs) 
     return context 

    def get(self, request, *args, **kwargs): 
     context = self.get_context_data(**kwargs) 
     return self.render_to_response(context) 

    def render_to_response(self, context, **response_kwargs): 
     response_kwargs.setdefault('content_type', self.content_type) 
     return self.response_class(
      request=self.request, 
      template=self.get_template_names(), 
      context=context, 
      using=self.template_engine, 
      **response_kwargs 
     ) 

urls.py：

from django.conf.urls import url 
from django.contrib import admin 
from .views import CashFlowView 

urlpatterns = [ 
    url(r'cash-flow', CashFlowView, name='cashflowView') 
] 

正如你可以看到我现在用的是templateView，但我得到这个怪异的初始化错误。任何想法？：

Internal Server Error: /visualization/cash-flow 
Traceback (most recent call last): 
    File "/Users/andy/Documents/venv_analytics/lib/python3.4/site-packages/django/core/handlers/exception.py", line 41, in inner 
    response = get_response(request) 
    File "/Users/andy/Documents/venv_analytics/lib/python3.4/site-packages/django/core/handlers/base.py", line 187, in _get_response 
    response = self.process_exception_by_middleware(e, request) 
    File "/Users/andy/Documents/venv_analytics/lib/python3.4/site-packages/django/core/handlers/base.py", line 185, in _get_response 
    response = wrapped_callback(request, *callback_args, **callback_kwargs) 
TypeError: __init__() takes 1 positional argument but 2 were given 

Answer 1

你需要通过你的TemplateView使用其as_view方法：

urlpatterns = [ 
    url(r'cash-flow', CashFlowView.as_view(), name='cashflowView') 
]