I am creating function here i want to add sequence and one more field value but this function gave error like no create method define so how i will improve this

def create(self, cr, uid, vals, context=None):
    if vals.get('name','/')=='/':
        name_obj=self.pool.get('type')
        sequence=self.pool.get('ir.sequence').get(cr, uid, 'sale.order') or '/'
        new_name=name_obj.create(cr, uid, {'name':sequence,}, context=context)
        import pprint
        pprint.pprint( vals )
        vals['name']=new_name
        pprint.pprint( vals )