django what variable in filter - django

Question

Complex model:
Class Name(models.Model):
first_name = models.CharField(max_length=50,blank=True)
middle_name = models.CharField(max_length=50, blank=True)
last_name = models.CharField(max_length=50, blank=True)
class Person(models.Model):
names = models.ManyToManyField('Name')
wives = models.ManyToManyField('Person',related_name='husbands',null = True, blank = True)
And Form:
class PersonForm(ModelForm):
names_list = forms.ModelMultipleChoiceField(queryset=Name.objects.filter(person=2), widget=forms.CheckboxSelectMultiple(attrs={"checked":""}))
wives_list = forms.ModelMultipleChoiceField(queryset=Person.objects.filter(husbands=2), widget=forms.CheckboxSelectMultiple(attrs={"checked":""}))
class Meta:
model = Person
fields = ('names','wives')
widgets = {
'names' : forms.HiddenInput(),
'wives': forms.HiddenInput(),
}
This is hardcoded for Person number 2 (person=2, husbands=2).
And it works. But now, I want to change number 2 into variable which is related to current edited person.
If I look at html source - I can see the hidden fields:
<input id="id_names" name="names" type="hidden" value="[30, 63]" />
<input id="id_wives" name="wives" type="hidden" value="[42]" />
So - there's two ways:
Name.objects.filter(person=somevariable) - shows the names of person number
or
Name.objects.fiter(id__in=othervariable) - shows the values in names variable
(the same with wives)
But nothing works - especially - I can't find the proper variable - i'm so close....

Answer 1

I found the main mistake - I can't set the id in the class, because it is not set yet. It is set in __init__ constructor. So I have to change it into:
class PersonForm(ModelForm):
def __init__(self, *args, **kwargs):
super(PersonForm, self).__init__(*args, **kwargs)
instance = getattr(self, 'instance', None)
if instance and instance.pk:
self.fields['names_list'].queryset=Name.objects.filter(person=instance.pk)
self.fields['wives_list'].queryset=Person.objects.filter(husbands=instance.pk)
names_list = forms.ModelMultipleChoiceField(queryset=Name.objects.none(), widget=forms.CheckboxSelectMultiple(attrs={"checked":""}))
wives_list = forms.ModelMultipleChoiceField(queryset=Person.objects.none(), widget=forms.CheckboxSelectMultiple(attrs={"checked":""}))
class Meta:
model = Person
fields = ('names','wives')
widgets = {
'names' : forms.HiddenInput(),
'wives': forms.HiddenInput(),
}
If someone finds a better solution - I would be appreciated.