[英]Set custom error messages in Django 3 ModelForm in default pop-out window
I'm new in Django3 and now I got a task to create custom error-messages text in default pop-out window of ModelForm.我是 Django3 的新手,现在我的任务是在 ModelForm 的默认弹出窗口中创建自定义错误消息文本。 This window: default pop-out window, when I press submit button
此窗口:默认弹出窗口,当我按下提交按钮时
Models.py模型.py
class Application_form_model(models.Model):
user_name = models.CharField(
max_length=30,
null=True
)
Forms.py表单.py
class ApplicationForm(forms.ModelForm):
class Meta:
model = Application_form_model
fields = (
'user_name',
)
widgets = {
'user_name': TextInput(
attrs={
'placeholder': 'Введіть ім\'я'
},
),
}
error_messages = {
'user_name': {
'required': _("Custom error message."),
},
}
views.py视图.py
def app_form(request):
formset = ApplicationForm(request.POST)
if formset.is_valid():
save_data = Application_form_model(
user_name=formset.cleaned_data['user_name'],
)
save_data.save()
return HttpResponseRedirect('')
return render(
request,
'application_form/application_form.html',
{
'formset': formset
}
)
Those messages are the default validation message of elements in HTML5.这些消息是 HTML5 中元素的默认验证消息。 You may override it by calling the method
setCustomValidity
.您可以通过调用方法
setCustomValidity
来覆盖它。
widgets = {
'user_name': TextInput(
attrs={
'placeholder': 'Введіть ім\'я'
'oninvalid'="setCustomValidity('Show a custom error message')"
},
),
}
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