我正在学习使用 Django 1.4(我会在 1.7 发布后立即升级)。
我有一个测试表单，其中我已将所有字段标记为 required=False，但我需要让用户在表单上至少输入一个字段。输入哪个字段并不重要，只要至少输入一项即可。
我确实有一个可行的解决方案，但我认为这可以做得更好，所以我希望对 Django 有更好理解的人可以向我展示更好的解决方案。
这是我的模型代码:
....
nationality_visa_country_of_birth = models.TextField(null=True, blank=True)
nationality_visa_citizenship = models.TextField(null=True, blank=True)
nationality_visa_residency = models.TextField(null=True, blank=True)
nationality_visa_work_visa = models.TextField(null=True, blank=True)
nationality_visa_study_visa = models.TextField(null=True, blank=True)
nationality_visa_specialist_visa = models.TextField(null=True, blank=True)
nationality_visa_other_visa = models.TextField(null=True, blank=True)
nationality_visa_current_valid_passport_display_type = models.PositiveIntegerField(default=0)
nationality_visa_multiple_passports = models.BooleanField(default=False)
nationality_visa_passport_nationality = models.TextField(null=True, blank=True)
nationality_visa_timestamp_added = models.DateTimeField(auto_now_add=True, auto_now=False)
nationality_visa_timestamp_updated = models.DateTimeField(auto_now=True, auto_now_add=False)
....
这是我的表单代码:
nationality_visa_country_of_birth = forms.CharField(label=_('Country of Birth'), max_length=250, required=False)
nationality_visa_citizenship = forms.CharField(label=_('Citizenship'), max_length=250, required=False)
nationality_visa_residency = forms.CharField( label=_('Residency'), max_length=250, required=False)
nationality_visa_work_visa = forms.CharField( label=_('Work Visa'), max_length=250, required=False)
nationality_visa_study_visa = forms.CharField( label=_('Student Visa'),max_length=250, required=False)
nationality_visa_specialist_visa = forms.CharField(label=_('Specialist Visa'), max_length=250, required=False)
nationality_visa_other_visa = forms.CharField(label=_('Other Visa'), max_length=250, required=False)
nationality_visa_current_valid_passport_display_type = forms.TypedChoiceField(coerce=int, label=_('Current Valid Passport'), choices=[(x, x) for x in range(0, 3)], required=False)
nationality_visa_multiple_passports = forms.BooleanField( label=_('Multiple Passports'), required=False, help_text=_("Select this option if you're going to enter multiple passport details into the field below."))
nationality_visa_passport_nationality = forms.CharField( label=_('Nationality of Passport(s)'), max_length=250, required=False)
这是要求用户至少输入一个字段的 forms.py 上的验证数据:
def clean(self):
cd_nvdf = super(NationalityVisaDetailsForm, self).clean()
if 'nationality_visa_country_of_birth' in cd_nvdf and len(cd_nvdf['nationality_visa_country_of_birth'].strip()) == 0:
if 'nationality_visa_citizenship' in cd_nvdf and len(cd_nvdf['nationality_visa_citizenship'].strip()) == 0:
if 'nationality_visa_residency' in cd_nvdf and len(cd_nvdf['nationality_visa_residency'].strip()) == 0:
if 'nationality_visa_work_visa' in cd_nvdf and len(cd_nvdf['nationality_visa_work_visa'].strip()) == 0:
if 'nationality_visa_study_visa' in cd_nvdf and len(cd_nvdf['nationality_visa_study_visa'].strip()) == 0:
if 'nationality_visa_specialist_visa' in cd_nvdf and len(cd_nvdf['nationality_visa_specialist_visa'].strip()) == 0:
if 'nationality_visa_other_visa' in cd_nvdf and len(cd_nvdf['nationality_visa_other_visa'].strip()) == 0:
if 'nationality_visa_current_valid_passport_display_type' in cd_nvdf and cd_nvdf['nationality_visa_current_valid_passport_display_type'] == 0:
if 'nationality_visa_passport_nationality' in cd_nvdf and len(cd_nvdf['nationality_visa_passport_nationality'].strip()) == 0:
self._errors['nationality_visa_country_of_birth'] = self.error_class([_("You must enter at least one Nationality & Visa Detail.")])
self._errors['nationality_visa_citizenship'] = self.error_class([_(" ")])
self._errors['nationality_visa_residency'] = self.error_class([_(" ")])
self._errors['nationality_visa_work_visa'] = self.error_class([_(" ")])
self._errors['nationality_visa_study_visa'] = self.error_class([_(" ")])
self._errors['nationality_visa_specialist_visa'] = self.error_class([_(" ")])
self._errors['nationality_visa_other_visa'] = self.error_class([_(" ")])
self._errors['nationality_visa_current_valid_passport_display_type'] = self.error_class([_(" ")])
self._errors['nationality_visa_passport_nationality'] = self.error_class([_(" ")])
del self.cleaned_data['nationality_visa_country_of_birth']
del self.cleaned_data['nationality_visa_citizenship']
del self.cleaned_data['nationality_visa_residency']
del self.cleaned_data['nationality_visa_work_visa']
del self.cleaned_data['nationality_visa_study_visa']
del self.cleaned_data['nationality_visa_specialist_visa']
del self.cleaned_data['nationality_visa_other_visa']
del self.cleaned_data['nationality_visa_current_valid_passport_display_type']
del self.cleaned_data['nationality_visa_passport_nationality']
return cd_nvdf
目前通过验证的表单会高亮上面的表单域，但是对于模板上的每个表单域，都会在html代码中插入如下html代码，使得每个表单域下面多出一个换行符:
<span class="help-inline">
<strong>
<br>
</strong>
</span>
我如何更好地编写验证代码，以便用户至少输入一个表单字段和/或不包括上面显示的额外换行代码？
请您参考如下方法:
这是有效的解决方案:
def clean(self):
cd_nvdf = super(NationalityVisaDetailsForm, self).clean()
if not any(
cd_nvdf.get(x, '')
for x in (
'nationality_visa_country_of_birth',
'nationality_visa_citizenship',
'nationality_visa_residency',
'nationality_visa_work_visa',
'nationality_visa_study_visa',
'nationality_visa_specialist_visa',
'nationality_visa_other_visa',
'nationality_visa_current_valid_passport_display_type',
'nationality_visa_passport_nationality',
)
):
self._errors['nationality_visa_country_of_birth'] = self.error_class([_("You must enter at least one Nationality & Visa Detail.")])
self._errors['nationality_visa_citizenship'] = self.error_class([_("You must enter at least one Nationality & Visa Detail.")])
self._errors['nationality_visa_residency'] = self.error_class([_("You must enter at least one Nationality & Visa Detail.")])
self._errors['nationality_visa_work_visa'] = self.error_class([_("You must enter at least one Nationality & Visa Detail.")])
self._errors['nationality_visa_study_visa'] = self.error_class([_("You must enter at least one Nationality & Visa Detail.")])
self._errors['nationality_visa_specialist_visa'] = self.error_class([_("You must enter at least one Nationality & Visa Detail.")])
self._errors['nationality_visa_other_visa'] = self.error_class([_("You must enter at least one Nationality & Visa Detail.")])
self._errors['nationality_visa_current_valid_passport_display_type'] = self.error_class([_("You must enter at least one Nationality & Visa Detail.")])
self._errors['nationality_visa_passport_nationality'] = self.error_class([_("You must enter at least one Nationality & Visa Detail.")])
return cd_nvdf
我希望这会对某人有所帮助。
