The Form just validates that the object you choose is a valid choice for
that M2M field. If you wanted to created a new one on the fly, you'd
probably want to use another Form and maybe go the Javascript way.
You could *possibly* get by, in the same form, with doing something like
this:
class MyForm(forms.ModelForm):
add_new_m2m = forms.BooleanField()
new_m2m = forms.CharField()
def save(self):
# Instance of this ModelForm's meta "class" attribute
m = super(MyForm, self).save(commit=True)
# A Boolean deciding whether the user wants to create a new choice
or not
if self.cleaned_data['add_new_m2m']:
# Create the new object, previously unselectable
new_choice = M2M.objects.create(title=self.cleaned_data['m2m'])
# Add the object to this Model
m.m2m.add(new_choice)
Another way to go about it is to give the user the option to enter some
data manually for that M2M field. Write the clean__m2mfield to accept
whatever you feel is nessasary. Then, in your save method, if the field is
not a choose-able M2M Object, then create a new one and add it in.
Those are just a couple of ideas. I'm sure others will have more for ya :)
On Fri, Jun 1, 2012 at 2:57 AM, Timothy Makobu
<[email protected]>wrote:
> Yes, how does one do that?
> Right now it's just rendering static choices that already exist. Or do I
> have to circumvent ModelForm for this field and present the field manually?
>
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