I want to exclude certain fields in the init function of a modelform depending on a parameter passed in, how do I do this? I know I can add exclude fields using the meta class of a model form but I need this to be dynamic depending on the variable passed in.
Thanks
您可以在调用super
之后修改self.fields
列表。
You should use modelform_factory to create the form on the fly and pass in the fields you want to exclude.
def django.forms.models.modelform_factory (
model,
form = ModelForm,
fields = None,
exclude = None,
formfield_callback = lambda f: f.formfield()
)
So something like
modelform_factory(MyModel, MyModelForm, exclude=('name',))
你应该使用self._meta
而不是self.Meta
,因为ModelForm.__new__
方法获取属性形成self.Meta
并将它们放入self._meta
。
Related, to exclude fields from a sub-class, I have extended the ModelForm class like so:
class ModelForm(djangoforms.ModelForm):
def __init__(self, *args, **kwargs):
super(ModelForm, self).__init__(*args, **kwargs)
meta = getattr(self, 'Meta', None)
exclude = getattr(meta, 'exclude', [])
for field_name in exclude:
if field_name in self.fields:
del self.fields[field_name]
Just to note: if your form is called from a ModelAdmin class, just create a get_form method for the ModelAdmin:
def get_form(self, request, obj=None, **kwargs):
exclude = ()
if not request.user.is_superuser:
exclude += ('field1',)
if obj:
exclude += ('field2',)
self.exclude = exclude
return super(ProfessorAdmin, self).get_form(request, obj, **kwargs)
PS: change ProfessorAdmin by the method "owner" class.
I made like this:
class Meta:
exclude = [field.label for field in Fields.objects.filter(visible=False)] + ['language', 'created_at']
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