在一個視圖中嘗試多格式時出現局部變量錯誤

Question

我在互聯網上尋找一種在一個視圖中使用兩種形式的解決方案，並在Django中找到了一種在一頁上處理多種形式的正確方法 。

但是當嘗試發布任何表單時，我在賦值錯誤之前得到了引用的局部變量'loginform'。

追溯

Request Method: POST
Request URL: http://127.0.0.1:8000/

Django Version: 1.8.3
Python Version: 2.7.10
Installed Applications:
('django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'main')
Installed Middleware:
('django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware',
 'django.middleware.security.SecurityMiddleware')


Traceback:
File "/Users/eisamazrouei/Desktop/django/imhere/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
  132.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/Users/eisamazrouei/Desktop/django/imhere/imhere/main/views.py" in landing_page
  36.   return render(request,'main/landing_page.html',{'loginform':loginform,'registerform':registerform})

Exception Type: UnboundLocalError at /
Exception Value: local variable 'loginform' referenced before assignment

views.py

def landing_page(request):
if request.method == "POST":
    if 'Login' in request.POST:
        loginform = LoginForm(request.POST)
        if loginform.is_valid():
            username = form.cleaned_data['l_username']
            password = form.cleaned_data['l_password']
            user = authenticate(username=username,password=password)
            login(request,user)
            return redirect(reverse('main_page',args=[request.user.username]))
        registerform = RegisterForm()
    elif 'Register' in request.POST :
        registerform = RegisterForm(request.POST)
        if registerform.is_valid():
            username = form.cleaned_data['username']
            password = form.cleaned_data['password']
            email = form.cleaned_data['email']
            user = User.objects.create_user(username,email,password)
            login(request,user)
            return redirect(reverse('edit_page',args=[request.user.username]))
        loginform = LoginForm()
else :
    loginform = LoginForm()
    registerform=RegisterForm()
return render(request,'main/landing_page.html',{'loginform':loginform,'registerform':register form})

landing_page.html

<div id=login>
    <form action="" method="POST">
    {% csrf_token %}
    {{loginform.as_p}}
    <input type="submit" value="Login"/>
    </form>
</div>


<div id=register>
    <form action="" method="POST">
    {% csrf_token %}
    {{registerform.as_p}}
    <input type="submit" value="Register"/>
    </form>
</div>

請讓我知道我使用的方法是否錯誤。

謝謝

Answer 1

您不會在帖子數據中發送“登錄”或“注冊”信息，因此，發布時都不會滿足任何條件，並且變量仍未定義。

您已為提交按鈕指定了值，但未指定名稱，因此它們不能包含在帖子數據中。 做這個：

<input type="submit" name="Login" value="Login"/>
...
<input type="submit" name="Register" value="Register"/>