AttributeError: 'student_detail' object has no attribute '775'?

I created a very small and simple module and created wizard in it. When i updated my module and try to use my wizard on the button call i got this error: AttributeError: 'student_detail' object has no attribute '775' for no reason. I searched all my module if there is mistyping or something but i am now not able to find out what went wrong. Kindly help if someone knows about this weird error. here is my main model: class student_detail(osv.osv): _name = 'student.detail' _description = 'Students' _columns ={ 'fname':fields.char('First Name',size=64), 'lname':fields.char('Last Name', size=64), 'dob':fields.date('Date of Birth', required=True), 'stu_id':fields.char('Roll No.',size=24,required=True), 'city':fields.char('City',size=24,required=True), 'phone':fields.char('Contact',size=16), 'active': fields.boolean('Active') } _defaults = { 'active': lambda *a: True, } def confirm(self, cr, uid, ids,Context=None): student = self.pool.get('student.detail') new_id = student.create(cr, uid, {'fname': student.fname, 'lname':student.fname, 'dob':student.dob, 'stu_id':student.stu_id, 'city':student.city, 'phone':student.phone, 'active':True, }) self.write(cr, uid, [student.id], {'student': new_id}) return {} def action_cancel(self,cr,uid,ids,context=None): return {'type': 'ir.actions.act_window_close'} student_detail() main view: student.tree student.detailtreestudent.formstudent.detailform

Studentsstudent.detail wizard.py: from osv import fields, osv class confirm_registration(osv.osv_memory): _name = "confirm.registration" _description = "confirm registration" _columns = { 'confirm_student':fields.many2one('student.detail', 'Student', required=True), } def confirm(self, cr, uid, ids, context=None): if context is None: context = {} data = context and context.get('active_ids', []) or [] stu_ref = self.pool.get('student.detail') for confirm_obj in self.browse(cr, uid, ids, context=context): stu_ref.confirm(cr, uid, data, confirm_obj.confirm_student.id, context) return {'type': 'ir.actions.act_window_close'} confirm_registration() and wizard view: confirm.registration.formconfirm.registrationform

Confirm Studentconfirm.registrationformtree,formnew