php - Codeigniter missing argument -

help guys.

this error problem error:

i think follow right tutorial, don't know wrong code

there controllers

public function edit($id){     $where = array('id' => $id);     $data['barang'] = $this->model_barang->edit($where,'barang')->results();     $this->load->view('edit',$data); } public function update(){     $id = $this->input->post('id');     $jenis = $this->input->post('jenis');     $nama = $this->input->post('nama');     $harga = $this->input->post('harga');     $pemasok = $this->input->post('pemasok');      $data = array (         'jenis' => $jenis,         'nama'=> $nama,         'harga' => $harga,         'pemasok' => $pemasok     );      $where = array(         'id' => $id     );      $this->model_barang->update($where,$data,'barang');     redirect('barang/tampil'); } 

and there model, think model not showing error

public function edit($where,$table) {     return $this->db->get($table,$where); } public function update($where,$data,$table){     $this->db->where($where);     $this->db->update($table,$data); } 

you need pass $id controller. should http://domain.com/barang/edit/1