fail to update data into database - codeigniter

Question

Controller
function edit($RegNo){
$data['row'] = $this->ManageTrenter code hereansfers->GetById($RegNo);
$this->load->view('admin/transferupdate', $data);
}
enter code here
public function update($RegNo){
$this->ManageT`enter code here`ransfers->update($RegNo);
redirect('admin/ManageTransfer/transfer');
}
Model
function GetById($RegNo){
return $this->db->get_where('user_transfer', array('RegNo' => $RegNo ))->row();
}
function update($RegNo){
$arr['School'] = $this->input->post('School');
$arr['Date'] = $this->input->post('Date');
$arr['RegNo'] = $this->input->post('RegNo');
$arr['Class'] = $this->input->post('Class');
$arr['New'] = $this->input->post('New');
$arr['Reason'] = $this->input->post('Reason');
$arr['UserId'] = $this->input->post('UserId');
$arr['Status'] = $this->input->post('Status');
$this->db->where(array('RegNo' => $RegNo));
$this->db->update('user_transfer', $arr);
}
View
RegNo);?>">
error occur
A PHP Error was encountered
Severity: Notice
Message: Trying to get property of non-object
Filename: admin/transferupdate.php
Line Number: 12

Answer 1

replace
$this->db->where(array('RegNo' => $RegNo));
like this
$this->db->where('RegNo', $RegNo);

Answer 2

function update($RegNo){
$arr= array();
$post_data=$this->input->post();
$arr=(
'School' => $post_data['School'],
'Date' => $post_data['Date'],
'RegNo' => $post_data['RegNo'],
'Class' => $post_data['Class'],
'New' => $post_data['New'],
'Reason' => $post_data['Reason'],
'UserId' => $post_data['UserId'],
'Status' => $post_data['Status']
);
$this->db->where('RegNo', $RegNo);
$this->db->update('user_transfer', $arr);
}