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How to initiate values ​​for fields in a form for editing in a template

I understand that you can use the parameter initiatefor the class Formfrom this question .

I am creating an editing form and I am trying to figure out how to initiate values ​​from a pre-existing object.

Am I doing this at the template level or at the presentation level (I don’t even know how to do this at the template level)? Or maybe I need to pass the actual object to the form and start at the form level?

What is the best practice?

EDIT:

For @Bento: in my original FormI am doing something like this

class OrderDetailForm(forms.Form):
    work_type = forms.ChoiceField(choices=Order.WORK_TYPE_CHOICES)
    note = forms.CharField(widget=forms.Textarea)

    def __init__(self, creator_list=None, place_list=None, *args, **kwargs):
        super(OrderCreateForm, self).__init__(*args, **kwargs)

        if creator_list:
            self.fields['creator'] = UserModelChoiceField(
                queryset=creator_list,
                empty_label="Select a user",
            )

    def clean(self):
        super(OrderCreateForm, self).clean()

        if 'note' in self.cleaned_data:
            if len(self.cleaned_data['note']) < 50:
                self._errors['note'] = self.error_class([u"Please enter a longer note."])

                del self.cleaned_data['note']

        return self.cleaned_data

How can I do this with ModelForm?

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1 answer

, ModelForm, . : , "", ModelForm "".

:

def view(request): 
  obj = Model.objects.get(pk = objectpk)
  form = MyModelForm(instance = obj)

  return render (request, "template", {'form' = form})

"" , - :

form.fields['fieldname'].initial = somevalue

, .

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