def add_view(self, request, *args, **kwargs):
        result = super(EnhancedModelAdmin, self).add_view(request, *args, **kwargs )
        request.session['filtered'] =  None

        return result
Delete the session key, since we want the user to be directed to all listings
dataset/ETHPy150Open baskoopmans/djcommon/djcommon/admin.py/EnhancedModelAdmin.add_view