我的CodeIgniter PHP代码无法更新数据

我有如下代码，但当我更新数据时，数据不会更新，而是在数据库中添加新数据

如何在保存时进行更新/编辑数据而不添加新数据

这里我使用CodeIgniter版本3.1.8，php版本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');
  }
}

<?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');
  }

}

---

问题是您将
nim
值获取为
$key
，并将其发送到
名称
列中进行检查。所以，它返回0。根据您的代码，如果您选择0，将插入返回数据而不是更新。以及在更新部分，您也在检查
name
字段中的
nim
值

更新你的代码如下

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);
}

您现在想从我们这里得到什么？在getdata（）中，是
nama
还是
nim
？你的帖子名是
nim
@Blue先生，谢谢，现在编辑我的数据工作有什么错误吗？