How to validate a field that is sent several times in django?

Question

I want to create a survey with django and ajax. In survey creation page, user can add several options for each survey. User may add 4 options, or add 10 options or any other number of options. all the options are string and I want to validate them by forms.CharField(). So I created below Form for validating the them.

class SurveyOptionForm(forms.Form):
    option = forms.CharField(max_length=50)

How can I validate more than one option by this form? or if there is any better way, what's that?

Answer 1

Well for do that read more about formset here then you can use modelformset to save your option in the database read more here. Then you can add the option to survey like :

# don't save to the database
>>> instances = formset.save(commit=False)
>>> for instance in instances:
...     # do something with instance
...     option = instance.save(commit=False)
...     option.survey = your_suervey_object
...     option.save()

You can specify how many forms pass. You can use javascript to add a button which add or show another input