My CodeIgniter PHP code cannot update the data - php

Question

I have the code like below, but when I update the data, the data is not updated but add new data in the database
How can I make updates / edit data and not add new data when saved?
Here I use CodeIgniter version 3.1.8, php version 7.2.4
model_anggota.php
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class Model_anggota extends CI_model {
public function getdata($key){
$this->db->where('nama',$key);
$hasil = $this->db->get('tb_anggota');
return $hasil;
}
public function getupdate($key,$data){
$this->db->where('nama',$key);
$this->db->update('tb_anggota',$data);
}
public function getinsert($data){
$this->db->insert('tb_anggota',$data);
}
public function getdelete($key){
$this->db->where('nim',$key);
$this->db->delete('tb_anggota');
}
}
data_anggota.php
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class Data_anggota extends CI_Controller {
public function index()
{
$this->model_security->getsecurity();
$isi['content'] = 'data_anggota/tampil_dataanggota';
$isi['data'] = $this->db->get('tb_anggota');
$this->load->view('tampilan_home',$isi);
}
public function tambah(){
$this->model_security->getsecurity();
$isi['content'] = 'data_anggota/form_tambahanggota';
$this->load->view('tampilan_home',$isi);
}
public function edit(){
$this->model_security->getsecurity();
$isi['content'] = 'data_anggota/form_editanggota';
$key = $this->uri->segment(3);
$this->db->where('nim',$key);
$query = $this->db->get('tb_anggota');
if($query->num_rows()>0){
foreach ($query->result() as $row) {
$isi['nama'] = $row->nama;
$isi['nim'] = $row->nim;
$isi['jurusan'] = $row->jurusan;
$isi['tempat_lahir'] = $row->tempat_lahir;
$isi['tanggal_lahir'] = $row->tanggal_lahir;
$isi['alamat'] = $row->alamat;
$isi['agama'] = $row->agama;
$isi['kelamin'] = $row->kelamin;
$isi['angkatan'] = $row->angkatan;
$isi['status'] = $row->status;
}
}
$this->load->view('tampilan_home',$isi);
}
public function simpan(){
$this->model_security->getsecurity();
$key = $this->input->post('nim');
$data['nama'] = $this->input->post('nama');
$data['nim'] = $this->input->post('nim');
$data['jurusan'] = $this->input->post('jurusan');
$data['tempat_lahir'] = $this->input->post('tempat_lahir');
$data['tanggal_lahir'] = $this->input->post('tanggal_lahir');
$data['alamat'] = $this->input->post('alamat');
$data['agama'] = $this->input->post('agama');
$data['kelamin'] = $this->input->post('kelamin');
$data['angkatan'] = $this->input->post('angkatan');
$data['status'] = $this->input->post('status');
$this->load->model('model_anggota');
$query = $this->model_anggota->getdata($key);
if($query->num_rows()>0){
$this->model_anggota->getupdate($key,$data);
$this->session->set_flashdata('info','Data sukses diupdate');
}else{
$this->model_anggota->getinsert($data);
$this->session->set_flashdata('info','Data sukses disimpan');
}
redirect('data_anggota');
}
public function delete(){
$this->model_security->getsecurity();
$this->load->model('model_anggota');
$key = $this->uri->segment(3);
$this->db->where('nim',$key);
$query = $this->db->get('tb_anggota');
if($query->num_rows()>0){
$this->model_anggota->getdelete($key);
$this->session->set_flashdata('info','Data sukses dihapus');
}
redirect('data_anggota');
}
}

Answer 1

The problem is you are getting nim value as $key, and sending that to check in the name column. so, it's returning 0. as per your code, if you the 0 return data will be inserted instead of update. as well as in the update part also, you are checking nim value in name field.
update your codes like following
public function getdata($key){
$this->db->where('nim',$key);
$hasil = $this->db->get('tb_anggota');
return $hasil;
}
public function getupdate($key,$data){
$this->db->where('nim',$key);
$this->db->update('tb_anggota',$data);
}