Django表單錯誤：當POST分配時，'QueryDict'對象沒有屬性'方法'

Question

我遇到了一個特定表單，它不允許我將數據發佈到我定義的函數。我很困惑，爲什麼這給了我錯誤，因爲我使用幾乎相同的形式在同一個網站中執行另一個操作。

當我發佈這個數據時，Django拋出「'QueryDict'對象沒有屬性'method'」，即使我已經將該方法指定爲POST。它呈現的形式很好，當它沒有發佈，只有當我提交時，我有一個問題。\

Django拋出指向這條線在視圖中的錯誤︰if request.method ==「POST」： this是下面「取消」功能的第一行。

任何人都可以識別我在這裏做錯了嗎？我很茫然。

下面是view.py功能：

from django.shortcuts import render 
from django.http import HttpResponseRedirect 
from django.shortcuts import redirect 
from .apps.instant import orderlist, orderdetails, cancel 
from .forms import cancelorder 

def cancel(request): 
    if request.method == "POST": 
     form = cancel(request.POST or None) 
     if form.is_valid(): 
      response = cancel(request.session['token'],form.cleaned_data['orderId'], form.cleaned_data['reason']) 
      return render(request, 'instant/review.html', {'data':response}) 
     else: 
      form = cancelorder() 
      return render(request, 'instant/cancel.html', {'form':form}) 
    else: 
     form = cancelorder() 
     return render(request, 'instant/cancel.html', {'form':form}) 

這裏的forms.py：

from django import forms 

class cancelorder(forms.Form): 
    orderId = forms.CharField(label='Order Id', max_length=5) 
    reason = forms.CharField(label='reason', widget=forms.Textarea) 

這裏就是它的渲染模板（即時/ cancel.html）：

{% extends "main/header.html" %} 
{% load widget_tweaks %} 
{% block content %} 
<div class = "row"> 
    <div class ="col-sm-3"> 
    </div> 
    <div class ="col-sm-6"> 
    <div class="alert alert-danger alert-dismissible" role="alert"> 
     <button type="button" class="close" data-dismiss="alert" aria-label="Close"><span aria-hidden="true">&times;</span></button> 
     <strong>Warning!</strong> When you cancel, the host gets an email notifiaction! Also, there are no confirmations. Only click cancel if you're sure! 
    </div> 
    </div> 
</div> 
<div class = "row"> 
    <div class ="col-sm-3"> 
    </div> 
    <div class ="col-sm-6"> 
    <div class="well-lg" style="background-color:#efefef"> 
     <center> 
     <h3> cancel an order</h3> 
    </center><br> 
     <!-- <h3>Login</h3> --> 
     <form action="/instant/cancel/" method="POST" class="post-form">{% csrf_token %} 
     <div class="form-group"> 
      <label for="login_email">Order Id</label> 
      {{ form.orderId|add_class:"form-control"|attr:"placeholder:Enter numbers only"}} 
     </div> 
     <div class="form-group"> 
      <label for="login_password">Reason</label> 
      {{ form.reason|add_class:"form-control"|attr:"placeholder:Why are you cancelling?"}} 
     </div> 
     <button type="submit" class="btn btn-danger btn-lg">Send Cancellation</button> 
     </form> 
    </div> 
    </div> 
</div> 
{% endblock %} 

最後這裏是窗體收集數據的函數。 .apps.instant（我知道我調用API函數做）：

from time import sleep 
import requests 
import logging 
import json 

LOG_FILENAME = 'transaction_log.log' #Production Log 
logging.basicConfig(filename=LOG_FILENAME,level=logging.INFO,format='%(asctime)s %(message)s') 

url = APIURL (removed for stackoverflow) 

def cancel(token,orderId,reason): 
    auth_token = {"Authorization" : "bearer " + str(token)} 
    raw = {'instabookingId':orderId,"reason":reason} 
    info = json.dumps(raw) 
    cancellation = requests.post(url, headers=auth_token,data=info) 
    response = cancellation.json() 
    return response 

我明白任何幫助，您可以提供的，真的想知道爲什麼這是行不通的。

這裏的Django的錯誤：

Environment: 


Request Method: POST 
Request URL: http://164.132.48.154:8000/instant/cancel/ 

Django Version: 1.10.2 
Python Version: 2.7.9 
Installed Applications: 
['main', 
'instant', 
'widget_tweaks', 
'django.contrib.admin', 
'django.contrib.auth', 
'django.contrib.contenttypes', 
'django.contrib.sessions', 
'django.contrib.messages', 
'django.contrib.staticfiles'] 
Installed Middleware: 
['django.middleware.security.SecurityMiddleware', 
'django.contrib.sessions.middleware.SessionMiddleware', 
'django.middleware.common.CommonMiddleware', 
'django.middleware.csrf.CsrfViewMiddleware', 
'django.contrib.auth.middleware.AuthenticationMiddleware', 
'django.contrib.messages.middleware.MessageMiddleware', 
'django.middleware.clickjacking.XFrameOptionsMiddleware'] 



Traceback: 

File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/exception.py" in inner 
    39.    response = get_response(request) 

File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py" in _get_response 
    187.     response = self.process_exception_by_middleware(e, request) 

File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py" in _get_response 
    185.     response = wrapped_callback(request, *callback_args, **callback_kwargs) 

File "/root/mysite/instant/views.py" in cancel 
    24.   form = cancel(request.POST or None) 

File "/root/mysite/instant/views.py" in cancel 
    23.  if request.method == "POST": 

Exception Type: AttributeError at /instant/cancel/ 
Exception Value: 'QueryDict' object has no attribute 'method' 

Answer 1

的錯誤是在這一行

... 
def cancel(request): 
    if request.method == "POST": 
     form = cancel(request.POST or None) # you call the function, its the same name, you would call your cancelform 
     if form.is_valid(): 
      response = cancel(request.session['token'],form.cleaned_data['orderId'], form.cleaned_data['reason']) 
      return render(request, 'instant/review.html', {'data':response}) 
     else: 
      ... 

是遞歸的，第二次，在功能取消，請求== request.POST和request.POST沒有屬性'方法'