django - How to give initial value in modelform -

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How do I provide the initial value for the field in ModelForm? Example: 

  class form 1 (forms.Form): title = forms.CharField (initial = "hello")

what would be equivalent to this ModelForm The basic syntax is something like this: 

  class Form2 (djangoforms.ModelForm): class meta: model = some model regions = ('title',)

What I am trying to do is generate a CRUD. Since I am doing this in an Appenin project, I can not use general ideas. Appengine has provided us the djangoforms.ModelForm which works like the ModelForm of the DEGENGO, but uses APINgin's Datastore.

I need the above functionality "Edit" part.

Normally, you can pass the model object that you want to use for the example keyword ARGU Editing in form: Form2 (example = somemodelobject) , but I do not know if it works on GAE, you can always send the constructor of your form to the initial dictionary, like 

  form 2 (initial = {"title": "blahblah"})

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