2016-11-14 191 views
0

我遇到了讓Ajax與我的django視圖一起工作的問題。確切的錯誤是Django視圖沒有返回HttpResponse對象

CustomMembers.decorators.formquestioninfo沒有返回一個 HttpResponse對象。它返回None

該視圖受以下自定義裝飾器的限制。

def is_god_admin(f): 
    def wrap(request, *args, **kwargs): 
     # This checks to see if the user is a god admin. If they are not, they get thrown to their profile page 
     if 'userID' not in request.session.keys() and 'username' not in request.session.keys(): 
      return HttpResponseRedirect("/Members/Login") 
     else: 
      # lets check the roleID to what ID we need. 
      god_admin = Roles.objects.get(role_name='System Admin') 
      if request.session['roleID'] != god_admin.id: 
       return HttpResponseRedirect("/Members/Profile/" + request.session['userID']) 
      return f(request, *args, **kwargs) 

    wrap.__doc__ = f.__doc__ 
    wrap.__name__ = f.__name__ 
    return wrap 

的觀點,現在只包含了一回用支票一同顯示的模板,如果AJAX被用來張貼請求。

查看

@is_god_admin 
def formquestionsinfo(request, formid, catid, mainid): 
    """ Displays the forms information.""" 
    # need the following values in both post and get methods 

    forms = Form.objects.all() 

    if request.is_ajax(): 
     print('ajax request') # this fires then errors 
    else: 
     return render(request, formquestions.html, 'forms':forms) # this works just fine with a get request 

Ajax代碼正被執行的是:(的的getCookie是基於關閉Django文檔的 - Cross Site Request Forgery protection

$(document).ready(function(){ 
       $("#{{main_id}}_main_visible").click(function(e){ 
        e.preventDefault(); 
        var url = window.location.href; 
        $.ajax({ 
         type:'get', 
         headers: {"X-CSRFToken": getCookie("csrftoken")}, 
         url: url, 
         data: { mainid: {{main_id}} }, 
         async: true, 
         cache: false 
        }); 
       }); 
      }); 

所有幫助,真是不勝感激謝謝增益

回答

2

return f(request, *args, **kwargs)在裝飾器的包裝器中調用視圖函數。但是,只有ajax請求的分支纔會執行print ,離開該功能沒有return聲明回報有效的響應對象:

if request.is_ajax(): 
    print('ajax request') 
    ... # return a response object here to avoid returning None 
+0

所以,即使我要求的jQuery/AJAX沒有重新加載頁面,Django的還是需要做一回呈現模板? – crzyone9584

+0

每個請求必須有一個有效的迴應。沒有一個不是有效的迴應。 –

+0

感謝您的解釋和您的時間。它現在正在工作。 – crzyone9584

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