Python 类型错误：'；QueryDict&x27；对象不可调用_Python_Django_Sqlite

Python 类型错误：'；QueryDict&x27；对象不可调用

python django sqlite

Python 类型错误：'；QueryDict&x27；对象不可调用,python,django,sqlite,Python,Django,Sqlite,在这个django代码中，标题上的错误向我显示 views.py： from django.shortcuts import render from django.http import HttpResponseRedirect from .models import userdata def signinView(request) : all_users = userdata.objects.all() return render(request,'signin.html',

在这个django代码中，标题上的错误向我显示

views.py：

 from django.shortcuts import render
from django.http import HttpResponseRedirect
from .models import userdata
def signinView(request) :
    all_users = userdata.objects.all()
    return render(request,'signin.html',{'all_items':all_users})

def adduser(request) :
    c = request.POST('username')
    d = request.POST('password')
    new_item = userdata(username=c, password=d)
    new_item.save()
    return HttpResponseRedirect('/signin/')

URL.py：


from django.contrib import admin
from django.urls import path
from signin.views import signinView, adduser
urlpatterns = [
    path('admin/', admin.site.urls),
    path('signin/',signinView),

   path('adduser/',adduser)
]

signin.html：

<!DOCTYPE html>
<html lang="en">
<head>
    <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
    <script src="https://code.jquery.com/jquery-3.4.1.slim.min.js" integrity="sha384-J6qa4849blE2+poT4WnyKhv5vZF5SrPo0iEjwBvKU7imGFAV0wwj1yYfoRSJoZ+n" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js" integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js" integrity="sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6" crossorigin="anonymous"></script>

    <meta charset="UTF-8">
    <title>sign up</title>
</head>
<body>
<form class="form-inline" action="/adduser/" method="post"> {% csrf_token %}
  <div class="form-group">
    <label for="exampleInputEmail1">Email address</label>
    <input type="email" class="form-control" id="exampleInputEmail1" aria-describedby="emailHelp" name="userame">
    <small id="emailHelp" class="form-text text-muted">We'll never share your email with anyone else.</small>
  </div>
  <div class="form-group mx-sm-3 mb-2">
    <label for="inputPassword2" class="sr-only">Password</label>
    <input type="password" class="form-control" id="inputPassword2" placeholder="Password" name="password">
  </div>
  <button type="submit" class="btn btn-primary mb-2" value="add">sign up</button>
</form>
<!--<ul>
<li>
    <p>username password</p>
</li>
</ul>
-->
<ul>
    {% for user_data in all_items %}
    <li>{{ user_data.username}} : {{ user_data.password }}</li>
    {% endfor %}
</ul>
</body>
</html>


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{所有_项中的用户_数据%}
{{user\u data.username}}:{{{user\u data.password}}
{%endfor%}

我应该做什么来修复错误？

应用程序应该在屏幕上打印用户名和密码，并让用户添加用户名和密码。我从Django开始，我很高兴得到帮助。我正在尝试写足够多的内容来发送帖子，同样，我需要此帮助，但目前还不重要。

您应该替换

c=request.post（'username'））

带有：

c = request.POST.get('username') # with this option c will be set to None automatically if username key is not present in post request

或

下一行也是如此；正如

QueryDict

一样，它是一个类似字典的对象（因此不可调用）

您可以共享stacktrace吗？但随后它显示：NOTNULL约束失败：signin_userdata.UserNames，如

（应该包含

用户名

）是空的。您的模板中是否有

？并发送

POST

请求？模板中的何处？请添加模板代码以便我们可以找到问题。我添加了模板

c = request.POST['username'] # if username is not present in the post this will throw an KeyError