models.py
class MyModel(models.Model):
pub_date = models.DateTimeField(default=timezone.now)
title = models.CharField(max_length=255, blank=False, null=False)
text = models.TextField(blank=True, null=True)
forms.py
class MyModelForm(ModelForm):
tos = BooleanField()
class Meta:
model = models.MyModel
fields = ['title', 'text', 'tos']
widgets = {
'title': TextInput(attrs={'class': 'form-control', 'placeholder': 'Title'}),
'text': Textarea(attrs={'class': 'form-control', 'placeholder': 'Text'}),
'tos': CheckboxInput(attrs={'data-validation-error-msg': 'You have to agree to our terms and conditions'}),
}
结果:
>>> print(forms.MyModelForm())
<tr><th><label for="id_title">Title:</label></th><td><input type="text" name="title" class="form-control" placeholder="Title" maxlength="255" required id="id_title" /></td></tr>
<tr><th><label for="id_text">Text:</label></th><td><textarea name="text" cols="40" rows="10" class="form-control" placeholder="Text" id="id_text"></textarea></td></tr>
<tr><th><label for="id_tos">Tos:</label></th><td><input type="checkbox" name="tos" required id="id_tos" /></td></tr>
您可以看到在TOS Field data-validation-error-msg
属性中缺少。
有什么想法?
edit
这有效:
class MyModelForm(ModelForm):
tos = BooleanField(
widget=CheckboxInput(
attrs={'data-validation-error-msg': 'You have to agree to our terms and conditions'}))
class Meta:
model = models.MyModel
fields = ['title', 'text', 'tos']
widgets = {
'title': TextInput(attrs={'class': 'form-control', 'placeholder': 'Title'}),
'text': Textarea(attrs={'class': 'form-control', 'placeholder': 'Text'}),
}
它不适用于Meta
类仍然很奇怪。
widgets
选项用于覆盖默认值。它对您的tos
字段不起作用,因为您已在表格中声明了tos = BooleanField()
。有关此信息的更多信息,请参见小部件文档中的注释。
在声明tos
字段时,您可以通过通过widget
来解决问题:
class MyModelForm(ModelForm):
tos = BooleanField(widget=CheckboxInput(attrs={'data-validation-error-msg': 'You have to agree to our terms and conditions'}))
class Meta:
model = models.MyModel
fields = ['title', 'text', 'tos']
widgets = {
'title': TextInput(attrs={'class': 'form-control', 'placeholder': 'Title'}),
'text': Textarea(attrs={'class': 'form-control', 'placeholder': 'Text'}),
}