limit the instances created by the current logged in user where the user is a foreign key in the model.

[Saloni Kalra]

I have a feedback app in which the user signs in, logs in and gives feedback. i wish to limit the number of feedbacks a user can give. how to do this and where? shall I user validation?

[Tomasz Knapik]

You probably have to validate it yourself. You probably should do this at the form level. I don't think there's a smart way to do that in Django.

1. Pass user into the form's __init__.

2. Check the number of user's feedback in the form's clean() method and raise ValidationError if user has left enough feedback.

class FeedbackForm(forms.Form):
    def __init__(self, user, *args, **kwargs):
        self.user = user

    def clean(self):
        super().clean()
        if Feedback.objects.filter(user_id=self.user.pk).count() >= 3:
            raise ValidationError(['You have already left feedback 3 times.'])

======================

form = FeedbackForm(request.user, request.POST)

On 01/07/18 17:25, Saloni Kalra wrote:

I have a feedback app in which the user signs in, logs in and gives feedback. i wish to limit the number of feedbacks a user can give. how to do this and where? shall I user validation?

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[Saloni Kalra]

thanks much!