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Django表单集标签

django-forms inheritance django python

TehOne · 技术社区 · 17 年前

我有一个继承自其他两个形式的形式。在我的表单中,我想更改在父表单之一中定义的字段的标签。有人知道如何做到这一点吗?

我试着用我的 __init__ ,但它会抛出一个错误,指出“'RegistrationFormTOS'对象没有属性'email'”。有人知道我该怎么做吗?

谢谢。

from django import forms
from django.utils.translation import ugettext_lazy as _
from registration.forms import RegistrationFormUniqueEmail
from registration.forms import RegistrationFormTermsOfService

attrs_dict = { 'class': 'required' }

class RegistrationFormTOS(RegistrationFormUniqueEmail, RegistrationFormTermsOfService):
    """
    Subclass of ``RegistrationForm`` which adds a required checkbox
    for agreeing to a site's Terms of Service.

    """
    email2 = forms.EmailField(widget=forms.TextInput(attrs=dict(attrs_dict, maxlength=75)), label=_(u'verify email address'))

    def __init__(self, *args, **kwargs):
        self.email.label = "New Email Label"
        super(RegistrationFormTOS, self).__init__(*args, **kwargs)

    def clean_email2(self):
        """
        Verifiy that the values entered into the two email fields
        match. 
        """
        if 'email' in self.cleaned_data and 'email2' in self.cleaned_data:
            if self.cleaned_data['email'] != self.cleaned_data['email2']:
                raise forms.ValidationError(_(u'You must type the same email each time'))
        return self.cleaned_data

8 回复 | 直到 17 年前

149

Xbito 17 年前

def __init__(self, *args, **kwargs):
    super(RegistrationFormTOS, self).__init__(*args, **kwargs)
    self.fields['email'].label = "New Email Label"

请注意,首先您应该使用超级调用。

Bakuriu 9 年前

Overriding the default fields

from django.utils.translation import ugettext_lazy as _

class AuthorForm(ModelForm):
    class Meta:
        model = Author
        fields = ('name', 'title', 'birth_date')
        labels = {
            'name': _('Writer'),
        }
        help_texts = {
            'name': _('Some useful help text.'),
        }
        error_messages = {
            'name': {
                'max_length': _("This writer's name is too long."),
            },
        }

kiennt 12 年前

您可以设置 label 作为定义表单时字段的属性。

class GiftCardForm(forms.ModelForm):
    card_name = forms.CharField(max_length=100, label="Cardholder Name")
    card_number = forms.CharField(max_length=50, label="Card Number")
    card_code = forms.CharField(max_length=20, label="Security Code")
    card_expirate_time = forms.CharField(max_length=100, label="Expiration (MM/YYYY)")

    class Meta:
        model = models.GiftCard
        exclude = ('price', )

Matthew Marshall 17 年前

self.fields['email'].label = "New Email Label"

这样您就不必担心表单字段和表单类方法的名称冲突。(否则,您不能有一个名为“clean”或“is_valid”的字段)直接在类体中定义字段主要是为了方便。

Bender-51 15 年前

email = models.EmailField(verbose_name="E-Mail Address")
email_confirmation = models.EmailField(verbose_name="Please repeat")

StupidWolf 5 年前

email = models.EmailField("E-Mail Address")
email_confirmation = models.EmailField("Please repeat")

Suraj Rao Raas Masood 4 年前

例如,以下操作将更改标签 s 新密码2 新密码确认 确认密码

class MyPasswordChangeForm(PasswordChangeForm):
  PasswordChangeForm.base_fields['new_password2'].label = 'Confirm Password'

进去看看 django/forms/forms.py ,你会看到的和 .

class Form(BaseForm, metaclass=DeclarativeFieldsMetaclass):
...

class DeclarativeFieldsMetaclass(MediaDefiningClass):
    """Collect Fields declared on the base classes."""
    def __new__(mcs, name, bases, attrs):
        # Collect fields from current class and remove them from attrs.
        attrs['declared_fields'] = {
            key: attrs.pop(key) for key, value in list(attrs.items())
            if isinstance(value, Field)
        }

        new_class = super().__new__(mcs, name, bases, attrs)

        # Walk through the MRO.
        declared_fields = {}
        for base in reversed(new_class.__mro__):
            # Collect fields from base class.
            if hasattr(base, 'declared_fields'):
                declared_fields.update(base.declared_fields)

            # Field shadowing.
            for attr, value in base.__dict__.items():
                if value is None and attr in declared_fields:
                    declared_fields.pop(attr)

        new_class.base_fields = declared_fields
        new_class.declared_fields = declared_fields

有一条评论

class BaseForm:
...
    # The base_fields class attribute is the *class-wide* definition of
    # fields. Because a particular *instance* of the class might want to
    # alter self.fields, we create self.fields here by copying base_fields.
    # Instances should always modify self.fields; they should not modify
    # self.base_fields.