的Django - 表單驗證未示出

Question

我有一個註冊頁面具有低於下面的代碼：

在視圖

：

def register_step2(request, value): 
context={"type": value} 
if request.method == 'POST': 
    form = RegisterForm(request.POST) 
    if form.is_valid(): 
     nric = form.cleaned_data['nric'] 
     name = form.cleaned_data['name'] 
     password = form.cleaned_data['password'] 
     email = form.cleaned_data['email'] 
     phonenumber = form.cleaned_data['phonenumber'] 
     dob = form.cleaned_data['dob'] 
     User.objects.create_user(nric, email, password) 
     return HttpResponseRedirect('/') 
return render_to_response('register.html', context, RequestContext(request)) 

在register.html：

{% extends "base.html" %} 
{% block subheader %} 
{% if type == '0' %} 
Are you.. 
{% endif %} 
{% if type == '1' %} 
Registration - Able Elder 
{% endif %} 
{% if type == '2' %} 
Registration - Public 
{% endif %} 
{% endblock %} 

{% block content %} 
{% if type == '0' %} 
<a href="/register/1">an elderly looking for something to do?</a> 
<a href="/register/2">the public looking for someone to help you?</a> 
{% else %} 
<form action="/register/{{type}}/" method="post">{% csrf_token %} 
<table class="center"> 
{% for field in able_form %} 
<tr> 
    <td> 
     {{ field.label_tag }}: 
    </td> 
    <td> 
    {{ field.errors }} 
    {{ field }} 
    </td> 
</tr> 
{% endfor %} 
<tr> 
<td> 
{{ able_form.non_field_errors }} 
</td> 
</tr> 
<tr> 
<td colspan="2"> 
By clicking on "register" I agree with the terms and conditions. 
</td> 
</tr> 
<tr> 
<td colspan="2"> 
<input type="submit" value="register"> 
</form> 
</td> 
{% endif %} 
{% endblock %} 

在context_processors .py（它在settings.py中正確設置）

from forms import RegisterForm 

def able_form(request): 
    return { 
      'able_form' : RegisterForm()} 

在forms.py

class RegisterForm(forms.Form): 
    nric = forms.CharField(max_length=NAME_MAX) 
    name = forms.CharField(max_length=NAME_MAX) 
    password = forms.CharField(widget=forms.PasswordInput) 
    confirm_password = forms.CharField(widget=forms.PasswordInput) 
    email = forms.EmailField() 
    postal_code = forms.IntegerField() 
    phone_number = forms.IntegerField() 
    date_of_birth = forms.DateField(widget=forms.DateInput) 

這是我的理解，可變區域將顯示領域的錯誤，但是當我點擊註冊按鈕沒有顯示。我在這裏做錯了什麼？

Answer 1

有了您的更新，原因是顯而易見的：

你永遠只傳遞一個空白表單模板。

你認爲綁定表格與request.POST數據會返回到你的模板？創建RegisterForm(request.POST)的新實例不會奇蹟般地更改模板中的表單實例（由上下文處理器返回）。

您的模板只能看到RegisterForm() - 如果要知道表單錯誤，它必須具有與request.POST數據綁定的表單。

form = RegisterForm(request.POST) 
    if form.is_valid(): 
     .... 
    context['able_form'] = form # you must pass back the bound form if you want to see errors. 
return render_to_response('register.html', context, RequestContext(request)) 

即使是這樣，你的背景處理器可以重寫此able_form關鍵 - 我會完全消除背景處理器。

如果你認爲這是一個好主意，那麼你必須記住在那裏或在你的視圖中執行你的表單邏輯。