Django的繼承上下文變量

這是我的看法，根據過濾器在那裏我有新聞列表...Django的繼承上下文變量

class SingleNewsView(ListView): 
model = News 
form_class = SearchForm 
template_name = "single_news.html" 



def get(self, request, pk, **kwargs): 
    self.pk = pk 

    self.pub_from = request.GET.get('pub_date_from',False) 
    self.pub_to = request.GET.get('pub_date_to',False) 
    self.crawlers = request.GET.get('crawler',False) 


    print self.crawlers 


    return super(SingleNewsView,self).get(request,pk, **kwargs) 



def get_context_data(self, **kwargs): 

    context = super(SingleNewsView,self).get_context_data(**kwargs) 
    context["form"] = SearchForm#(self.request.GET) 
    if self.pub_from and self.pub_to and self.crawlers: 
     context["something"] = News.objects.filter(category_id=self.pk).filter(published_date__range=(self.pub_from,self.pub_to), crawler=self.crawlers) 
    else: 
     context["something"] = News.objects.filter(category_id=self.pk) 

    return context

而現在我在這裏有以下載從上下文查詢的新聞列表[「東西」] 。

def CSVView(request): 

response = HttpResponse(content_type="text/csv") 
response["Content-Disposition"] = 'attachment; filename=somefilename.csv"' 

writer = csv.writer(response) 


writer.writerow([context["something"])# Here what can I write... 

return response

現在在writer.writerow的def CSVView中，我希望上下文[「something」]形成第一個視圖。我不知道該怎麼做。我想用csv下載新聞。任何人有更好的主意？我做錯了什麼？

我試過def CSVView（請求，SingleNewsView）：但它聲稱def CSVView只需要2爭論1給出的錯誤。我應該做些什麼。我怎樣才能以csv格式下載新聞？

來源

2014-06-25 Aaeronn

看來你是失去了一些東西，如果你想'傳遞'從一個視圖到另一個視圖，使用會話https://docs.djangoproject.com/en/dev/topics/http/sessions/ – trinchet

我可以做some_val = request.session [context [「something」 ]？ – Aaeronn

我做了some_val = request.session.get（「something」）並打印some_val。但它打印假。這是爲什麼？？我無法獲得上下文的價值[「某事」] – Aaeronn

因爲我評論，你應該離開了上下文的使用，在這種情況下，你需要的是會議，下面的代碼應該是什麼樣子：

class SingleNewsView(ListView): 
    model = News 
    form_class = SearchForm 
    template_name = "single_news.html" 


    def get(self, request, pk, **kwargs): 
     self.pk = pk 

     self.pub_from = request.GET.get('pub_date_from',False) 
     self.pub_to = request.GET.get('pub_date_to',False) 
     self.crawlers = request.GET.get('crawler',False) 

     if self.pub_from and self.pub_to and self.crawlers: 
      value = News.objects.filter(category_id=self.pk).filter(published_date__range=(self.pub_from,self.pub_to), crawler=self.crawlers) 
     else: 
      value= News.objects.filter(category_id=self.pk) 
     self.request.session.set("somekey",value) 
     return super(SingleNewsView,self).get(request,pk, **kwargs) 


def CSVView(request): 

    response = HttpResponse(content_type="text/csv") 
    response["Content-Disposition"] = 'attachment; filename=somefilename.csv"' 
    writer = csv.writer(response) 
    writer.writerow(self.request.session.get("somekey")) 

    return response

來源

2014-06-26 12:41:11 trinchet

Django的繼承上下文變量

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