Question

我在使用不允许我将数据发布到我定义的函数的特定表单时遇到问题。我很困惑为什么这会给我错误，因为我使用几乎相同的形式在同一个网站上做另一个动作。

当我发布这些数据时，Django会抛出“'QueryDict'对象没有属性'method'”，即使我已将该方法指定为POST。它在没有发布的情况下呈现形式就好了，只有当我提交时我才有问题。\

Django抛出的错误指向视图中的这一行：if request.method ==“POST”：这是下面“取消”功能的第一行。

有谁可以确定我在这里做错了什么？我很茫然。

这是view.py中的函数：

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})

这是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)

这是它渲染的模板（instant / 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 %}

最后这里是表单收集数据的函数。 .apps.instant（我知道我调用的API确实有效）：

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

我感谢您提供的任何帮助，我真的想知道为什么这不起作用。

这是Django的错误：

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

错误在此行

...
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:
           ...

是递归的，第二次是在函数cancel，request == request.POST，而request.POST没有属性＆＃39;方法＆＃39;

Answer 2

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:

这里，视图中的函数名称是取消。此外，第 3 行 (cancel(request.POST or None)) 中提到的表单名称也是取消。这就是错误。

Django表单错误：POST分配时，'QueryDict'对象没有属性'method'

2 个答案: