你也可以使用Django Crispy Forms，这是一个很好的定义表单的工具，如果你想使用一些CSS框架，比如Bootstrap或Foundation。在这里为表单字段指定类很容易。

你的表单类会是这样的:

from django import forms

from crispy_forms.helper import FormHelper
from crispy_forms.layout import Layout, Div, Submit, Field
from crispy_forms.bootstrap import FormActions

class SampleClass(forms.Form):
    name = forms.CharField(max_length=30)
    age = forms.IntegerField()
    django_hacker = forms.BooleanField(required=False)

    helper = FormHelper()
    helper.form_class = 'your-form-class'
    helper.layout = Layout(
        Field('name', css_class='name-class'),
        Field('age', css_class='age-class'),
        Field('django_hacker', css-class='hacker-class'),
        FormActions(
            Submit('save_changes', 'Save changes'),
        )
    )

你可以试试这个。

class SampleClass(forms.Form):
  name = forms.CharField(max_length=30)
  name.widget.attrs.update({'class': 'your-class'})
...

你可以在Django Widgets中看到更多信息

下面是上面的一个变种，它将给所有字段相同的类(例如jquery漂亮的圆角)。

  # Simple way to assign css class to every field
  def __init__(self, *args, **kwargs):
    super(TranslatedPageForm, self).__init__(*args, **kwargs)
    for myField in self.fields:
      self.fields[myField].widget.attrs['class'] = 'ui-state-default ui-corner-all'

事实证明，你可以在表单构造函数(init函数)或在表单类初始化后这样做。这有时是必需的，如果你不是写自己的形式和形式是来自其他地方-

def some_view(request):
    add_css_to_fields = ['list','of','fields']
    if request.method == 'POST':
        form = SomeForm(request.POST)
        if form.is_valid():
            return HttpResponseRedirect('/thanks/')
    else:
        form = SomeForm()

    for key in form.fields.keys():
        if key in add_css_to_fields:
            field = form.fields[key]
            css_addition = 'css_addition '
            css = field.widget.attrs.get('class', '')
            field.widget.attrs['class'] = css_addition + css_classes

    return render(request, 'template_name.html', {'form': form})

回答我自己的问题。叹息

http://docs.djangoproject.com/en/dev/ref/forms/widgets/#django.forms.Widget.attrs

我没有意识到它被传递到小部件构造函数中。

你也可以使用Django Crispy Forms，这是一个很好的定义表单的工具，如果你想使用一些CSS框架，比如Bootstrap或Foundation。在这里为表单字段指定类很容易。

你的表单类会是这样的:

from django import forms

from crispy_forms.helper import FormHelper
from crispy_forms.layout import Layout, Div, Submit, Field
from crispy_forms.bootstrap import FormActions

class SampleClass(forms.Form):
    name = forms.CharField(max_length=30)
    age = forms.IntegerField()
    django_hacker = forms.BooleanField(required=False)

    helper = FormHelper()
    helper.form_class = 'your-form-class'
    helper.layout = Layout(
        Field('name', css_class='name-class'),
        Field('age', css_class='age-class'),
        Field('django_hacker', css-class='hacker-class'),
        FormActions(
            Submit('save_changes', 'Save changes'),
        )
    )