姜戈。 UserCreationForm 无法正确呈现

Question

对我来说这很奇怪，也许不是，而且我遗漏了一些明显的东西：

forms.py

from django import forms
from django.contrib.auth.models import User
from django.contrib.auth.forms import UserCreationForm

class formRegistro(UserCreationForm):    
    class Meta:
        model = User
        fields = ("first_name", "last_name", "email", "username", "password1", "password2")
        widgets = {
                'first_name': forms.TextInput(attrs={'class':'form-control'}),
                'last_name': forms.TextInput(attrs={'class':'form-control'}),
                'email': forms.TextInput(attrs={'class':'form-control'}),
                'username': forms.TextInput(attrs={'class':'form-control'}),
                'password1': forms.PasswordInput(attrs={'class':'form-control'}),
                'password2': forms.PasswordInput(attrs={'class':'form-control'})
        }

views.py

def registro(request):    
    template = "perfiles/registro.html"
    form = formRegistro()
    context = {'form' : form}
    return render(request, template, context)

html registro.html

<form class="form-horizontal" action="{% url 'perfiles:registro' %}" method="post">
    {% csrf_token %}        
        <fieldset>
            {{form}}
        </fieldset>         
        <input type="submit" value="Submit">
</form>

我觉得不错，我只是在渲染一个表单。我只想将 "form-control" 添加到输入的 classes 中。奇怪的是，它只将 "form-control" 添加到字段 "first_name"、"last_name" 和 "email_address"。 ?¡ 输入 "username"、"password1" 和 "password2".

没有 form-control-class

这是渲染后的 html：

Answer 1

如果您查看 UserCreationForm 的源代码，您会看到这三个字段是声明性定义的：

class UserCreationForm(forms.ModelForm):
    ...
    username = forms.RegexField(...)
    password1 = forms.CharField(...)
    password2 = forms.CharField(...)
    ...

根据 the documentation，您不能在 Meta 中覆盖它们：

Fields defined declaratively are left as-is, therefore any customizations made to Meta attributes such as widgets, labels, help_texts, or error_messages are ignored; these only apply to fields that are generated automatically.

因此，您最好的选择是将这些声明复制到您自己的 class 并覆盖那里的小部件选项。

更新：另一种选择是按照@catavaran 的建议修改表单的__init__ 方法中的小部件属性。有关示例，请参阅 this answer。

姜戈。 UserCreationForm 无法正确呈现

Django. UserCreationForm not rendering correctly

python

django

django-forms