如何将 max_length 添加到 allauth 用户名

Question

我使用 Django allauth 作为我的 Django 站点的用户帐户框架。文档显示有一个 ACCOUNT_USERNAME_MIN_LENGTH 但是由于某种原因没有 ACCOUNT_USERNAME_MAX_LENGTH 。

有什么方法可以为用户名创建最大长度？

这是我的自定义 allauth 注册表单 - 也许我可以在这里做点什么？：

class AllauthSignupForm(forms.Form):

    captcha = ReCaptchaField(
        public_key=config("RECAPTCHA_PUBLIC_KEY"),
        private_key=config("RECAPTCHA_PRIVATE_KEY"),
    )

    class Meta:
        model = User

    def signup(self, request, user):
        """ Required, or else it throws deprecation warnings """
        pass

编辑： 尝试继承 SignupView

draft1/forms.py

class AllauthSignupForm(SignupForm):
    def __init__(self, *args, **kwargs):
        super(AllauthSignupForm, self).__init__(*args, **kwargs)
        self.fields['username']['validators'] += MaxLengthValidator(150,
                                                                    "Username should be less than 150 character long")

    captcha = ReCaptchaField(
        public_key=config("RECAPTCHA_PUBLIC_KEY"),
        private_key=config("RECAPTCHA_PRIVATE_KEY"),
    )

    class Meta:
        model = User

    def signup(self, request, user):
        """ Required, or else it throws deprecation warnings """
        pass

draft1/views.py

from allauth.account.views import SignupView

class MySignupView(SignupView):
    form_class = AllauthSignupForm

allauth/account/urls.py

url(r"^signup/$", MySignupView.as_view(), name="account_signup"),

draft1/settings.py

ACCOUNT_SIGNUP_FORM_CLASS = 'draft1.forms.AllauthSignupForm'

上面的代码returns这个错误：

Traceback (most recent call last):
  File "/Users/zorgan/Desktop/postr1/lib/python3.5/site-packages/django/utils/autoreload.py", line 228, in wrapper
    fn(*args, **kwargs)
  File "/Users/zorgan/Desktop/postr1/lib/python3.5/site-packages/django/core/management/commands/runserver.py", line 125, in inner_run
    self.check(display_num_errors=True)
  File "/Users/zorgan/Desktop/postr1/lib/python3.5/site-packages/django/core/management/base.py", line 359, in check
    include_deployment_checks=include_deployment_checks,
  File "/Users/zorgan/Desktop/postr1/lib/python3.5/site-packages/django/core/management/base.py", line 346, in _run_checks
    return checks.run_checks(**kwargs)
  File "/Users/zorgan/Desktop/postr1/lib/python3.5/site-packages/django/core/checks/registry.py", line 81, in run_checks
    new_errors = check(app_configs=app_configs)
  File "/Users/zorgan/Desktop/postr1/lib/python3.5/site-packages/django/core/checks/urls.py", line 16, in check_url_config
    return check_resolver(resolver)
  File "/Users/zorgan/Desktop/postr1/lib/python3.5/site-packages/django/core/checks/urls.py", line 26, in check_resolver
    return check_method()
  File "/Users/zorgan/Desktop/postr1/lib/python3.5/site-packages/django/urls/resolvers.py", line 254, in check
    for pattern in self.url_patterns:
  File "/Users/zorgan/Desktop/postr1/lib/python3.5/site-packages/django/utils/functional.py", line 35, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
  File "/Users/zorgan/Desktop/postr1/lib/python3.5/site-packages/django/urls/resolvers.py", line 405, in url_patterns
    patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
  File "/Users/zorgan/Desktop/postr1/lib/python3.5/site-packages/django/utils/functional.py", line 35, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
  File "/Users/zorgan/Desktop/postr1/lib/python3.5/site-packages/django/urls/resolvers.py", line 398, in urlconf_module
    return import_module(self.urlconf_name)
  File "/Users/zorgan/Desktop/postr1/lib/python3.5/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 986, in _gcd_import
  File "<frozen importlib._bootstrap>", line 969, in _find_and_load
  File "<frozen importlib._bootstrap>", line 958, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 673, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 665, in exec_module
  File "<frozen importlib._bootstrap>", line 222, in _call_with_frames_removed
  File "/Users/zorgan/Desktop/vorsso/venvor/draft1/urls.py", line 6, in <module>
    from . import views
  File "/Users/zorgan/Desktop/vorsso/venvor/draft1/views.py", line 11, in <module>
    from .forms import UserSettingsForm
  File "/Users/zorgan/Desktop/vorsso/venvor/draft1/forms.py", line 8, in <module>
    from allauth.account.forms import SignupForm
  File "/Users/zorgan/Desktop/postr1/lib/python3.5/site-packages/allauth/account/forms.py", line 228, in <module>
    class BaseSignupForm(_base_signup_form_class()):
  File "/Users/zorgan/Desktop/postr1/lib/python3.5/site-packages/allauth/account/forms.py", line 216, in _base_signup_form_class
    fc_classname))
django.core.exceptions.ImproperlyConfigured: Module "draft1.forms" does not define a "AllauthSignupForm" class

Answer 1

您应该使用如下所示的最大长度验证器。更多关于验证器的文档 here.

from django.core.validators import MaxLengthValidator
from allauth.account.forms import SignupForm
class AllauthSignupForm(SignupForm):
    def __init__(self, *args, **kwargs):
        self.fields['username']['validators'] += MaxLengthValidator(150, "Username should be less than 150 character long")

Answer 2

不确定这是否是最好的方法，但它确实有效。

扩展 SignupForm 后，用具有 max_length 参数的新字段完全更改了 username 字段。

from django import forms
from django.utils.translation import ugettext_lazy as _
from allauth.account.forms import SignupForm

class AllauthSignupForm(SignupForm):
    username = forms.CharField(label=_("Username"),
                               min_length=5,
                               max_length=20, # Change this 
                               widget=forms.TextInput(
                                   attrs={'placeholder':
                                              _('Username'),
                                          'autofocus': 'autofocus'}))

Answer 3

我想解释一下为什么没有ACCOUNT_USERNAME_MAX_LENGTH。如果你打开源代码，你会看到 max_length 验证器来自 username 模型字段 https://github.com/pennersr/django-allauth/blob/330bf899dd77046fd0510221f3c12e69eb2bc64d/allauth/account/forms.py#L277

username_field.max_length = get_username_max_length()

其中 get_username_max_length 是实际从 User 模型 https://github.com/pennersr/django-allauth/blob/8fbbf8c1d32832d72de5ed1c7fd77600af57ea6f/allauth/utils.py#L64

中提取 max_length 值的函数

def get_username_max_length():
    from .account.app_settings import USER_MODEL_USERNAME_FIELD
    if USER_MODEL_USERNAME_FIELD is not None:
        User = get_user_model()
        max_length = User._meta.get_field(USER_MODEL_USERNAME_FIELD).max_length
    else:
        max_length = 0
    return max_length

第一种方法： 所以你可以直接在 User 的模型 username 字段上更改 max_length 值，如果你交换了它.

我认为重写表单字段或 __init__ 方法不会像其他答案所建议的那样实际工作，因为 max_length 的赋值发生在 ACCOUNT_SIGNUP_FORM_CLASS [=34 的子类中=]

class BaseSignupForm(_base_signup_form_class()):

其中 _base_signup_form_class 是获取 ACCOUNT_SIGNUP_FORM_CLASS

的函数

第二种方法： 是子类化 SignupView 并覆盖它的 SignupForm 读取 Override signup view django-allauth and How to customize user profile when using django-allauth

在 SignupForm 中，您实际上可以按照@MehdiB 或@PeterSobhi 的建议进行操作。

ImproperlyConfigured 问题是因为 https://github.com/pennersr/django-allauth/issues/1792

所以你要确保这些表单是根据 https://github.com/pennersr/django-allauth/issues/1749#issuecomment-304628013

在不同的 python 模块中定义的

# base/forms.py 
# this is form that your ACCOUNT_SIGNUP_FORM_CLASS is points to
class BaseSignupForm(forms.Form):

    captcha = ReCaptchaField(
        public_key=config("RECAPTCHA_PUBLIC_KEY"),
        private_key=config("RECAPTCHA_PRIVATE_KEY"),
    )

    class Meta:
        model = User

    def signup(self, request, user):
        """ Required, or else it throws deprecation warnings """
        pass

# data1/forms.py
# this is your signup form
from django.core.validators import MaxLengthValidator
from allauth.account.forms import SignupForm

class MySignupForm(SignupForm):
    def __init__(self, *args, **kwargs):
        super(MySignupForm, self).__init__(*args, **kwargs)
        self.fields['username']['validators'] += MaxLengthValidator(150, "Username should be less than 150 character long")

# views.py

from allauth.account.views import SignupView
class MySignupView(SignupView):
    form_class = MySignupForm

# urls.py

url(r"^signup/$", MySignupView.as_view(), name="account_signup"),

Answer 4

尝试使用表单中的全名导入：从 allauth.accouts 将表单导入为 AllauthForms classAllauthSignupForm(AllauthForms.SignupForm): ....

我没有测试这个，抱歉我把这个和我的 phone 一起发布了，我会尽快重新格式化答案

Answer 5

这可以通过扩展 DefaultAccountAdapter class 并覆盖 clean_username 方法来快速完成。您还需要在我们的自定义验证后再次引用 clean_username 以完成其他内置验证。

可按如下方式进行

from allauth.account.adapter import DefaultAccountAdapter
from django.forms import ValidationError

class UsernameMaxAdapter(DefaultAccountAdapter):

    def clean_username(self, username):
        if len(username) > 'Your Max Size':
            raise ValidationError('Please enter a username value less than the current one')
        return DefaultAccountAdapter.clean_username(self,username) # For other default validations.

最后，指向 settings.py

中的子class

ACCOUNT_ADAPTER = 'YourProject.adapter.UsernameMaxAdapter'

参考：https://github.com/pennersr/django-allauth/blob/8fbbf8c1d32832d72de5ed1c7fd77600af57ea6f/allauth/account/adapter.py#L244

如何将 max_length 添加到 allauth 用户名

How to add max_length to allauth username

python

django

django-allauth