重写Django模型表单中的Clean方法

2024-10-01 11:39:02 发布

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我目前使用的系统需要用户在注册时输入两个紧急联系号码。我想实现一个检查来确保用户输入的是一个有效的数字，我已经确定这是一个以0或+开头的字符串。为此，我尝试重写表单中的clean方法，但它不太起作用。在

这是我的表单.py相关方法的代码（现已更新，引发下面所述的错误）：

 class UserProfileForm(forms.ModelForm):
   class Meta:
       model = UserProfile
       fields = ('emergcon1', 'emergcon2')
       labels = {
          'emergcon1': ('Emergency Contact Number'),
          'emergcon2': ('Emergency Contact Number 2')
       }

   def clean_emergcon1(self):
      emergcon1 = self.cleaned_data['emergcon1']
      print emergcon1
      if emergcon1[:1] != '0' or '+':
         raise ValidationError(
             _('%(emergcon1)s is not a valid phone number'),
             params={'emergcon1': emergcon1},
         )
      return emergcon1
    def clean_emergcon2(self):
      emergcon2 = self.cleaned_data.['emergcon2']
      if emergcon2[:1] != '0' or '+':
         raise ValidationError(
             _('%(emergcon2)s is not a valid phone number'),
             params={'emergcon2': emergcon2},
         )
      return emergcon2

在视图.py: def寄存器（请求）： 注册=假

^{pr2}$

在模型.py公司名称：

class UserProfile(models.Model):
    user = models.OneToOneField(User)

    emergcon1 = models.CharField(max_length=128, blank=False)
    emergcon2 = models.CharField(max_length=128, blank=False)

    def _unicode_(self):
        return self.user.username
        return self.emergcon1
        return self.emergcon2

我的注册.html公司名称：

{% extends 'tennis/base.html' %}
{% load staticfiles %}

{% block body_block%}

   {% block title_block %}
        Registration
    {% endblock %}

    <body>
        <h1>Register Here</h1>
        {% if registered %}
            <strong> Thank you for registering</strong>
            <a href="{% url 'index' %}"> Return to homepage </a><br />

        {% else %}
            <form id="user_form" method="post" action="{% url 'register' %}">

            {% csrf_token %}

            <!-- displays forms -->
            {{ user_form.as_p }}
            {{ profile_form.as_p }}

            <!-- adds submit button -->
            <input type="submit" name="submit" value="Register" />
        </form>
        {% endif %}
    </body>
{% endblock %}

完全错误回溯，错误全局名称''uu'未定义：

    Internal Server Error: /tennis/register/
Traceback (most recent call last):
  File "/home/steph/.virtualenvs/tennis/local/lib/python2.7/site-packages/django/core/handlers/base.py", line 149, in get_response
    response = self.process_exception_by_middleware(e, request)
  File "/home/steph/.virtualenvs/tennis/local/lib/python2.7/site-packages/django/core/handlers/base.py", line 147, in get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/home/steph/Documents/project/tennis_system_project/tennis/views.py", line 29, in register
    if user_form.is_valid() and profile_form.is_valid():
  File "/home/steph/.virtualenvs/tennis/local/lib/python2.7/site-packages/django/forms/forms.py", line 161, in is_valid
    return self.is_bound and not self.errors
  File "/home/steph/.virtualenvs/tennis/local/lib/python2.7/site-packages/django/forms/forms.py", line 153, in errors
    self.full_clean()
  File "/home/steph/.virtualenvs/tennis/local/lib/python2.7/site-packages/django/forms/forms.py", line 362, in full_clean
    self._clean_fields()
  File "/home/steph/.virtualenvs/tennis/local/lib/python2.7/site-packages/django/forms/forms.py", line 383, in _clean_fields
    value = getattr(self, 'clean_%s' % name)()
  File "/home/steph/Documents/project/tennis_system_project/tennis/forms.py", line 30, in clean_emergcon1
    _('%(emergcon1)s is not a valid phone number'),
NameError: global name '_' is not defined

已解决，用“导入自”修复django.utils.翻译导入ugettext_lazy as\

新问题：以0开头的数字未被识别为有效。我提供了07896428317，当我点击提交它给我“07896428317不是一个有效的电话号码”。在


Tags： djangoinpyselfformcleanhomeis
1条回答
网友
1楼 · 发布于 2024-10-01 11:39:02

由于在clean()方法中待验证的字段不相互依赖，因此可以像这样重写逻辑，即使用^{}方法：

from django.utils.translation import ugettext_lazy as _

class UserProfileForm(forms.ModelForm):
    class Meta:
       # as is

    def clean_emergcon1(self):
        """ Validation of emergcon1 specifically """
        emergcon1 = self.cleaned_data['emergcon1']
        if emergcon1[:1] not in ['0', '+']:
            raise ValidationError(
                _('%(emergcon1)s is not a valid phone number'),
                params={'emergcon1': emergcon1},
            )
        # Always return a value to use as the new cleaned data, even if
        # this method didn't change it.
        return emergcon1

    def clean_emergcon2(self):
        """ Validation of emergcon2 specifically """
        emergcon2 = self.cleaned_data['emergcon2']
        if emergcon2[:1] not in ['0', '+']:
            raise ValidationError(
                _('%(emergcon2)s is not a valid phone number'),
                params={'emergcon2': emergcon2},
            )
        # Always return a value to use as the new cleaned data, even if
        # this method didn't change it.
        return emergcon2

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