如何在Codeigniter中從數據庫設置會話用戶數據？

Question

我在codeigniter 3中的會話登錄有問題。我無法從數據庫獲取數據以插入會話。 我的代碼有什么問題？

我的控制器

function __construct(){
    parent::__construct();      
    $this->load->model('m_login');
}

function index(){
    $this->load->view('v_login');
}

function aksi_login(){
    $username = $this->input->post('username');
    $password = $this->input->post('password');
    $where = array(
        'username' => $username,
        'password' => md5($password)
        );
    $cek = $this->m_login->cek_login("admin",$where)->num_rows();
    if($cek > 0){
        $data_session = array(
            'username' => $cek['username'],
            'nama'     => $cek['nama']
            'status'   => "login"
            );
        $this->session->set_userdata($data_session);
        redirect(base_url("admin"));
    }else{
        echo "Username dan password salah !";
    }
}
}

我的模特

<?php 
class M_login extends CI_Model{ 
function cek_login($table,$where){      
    return $this->db->get_where($table,$where);
    }   
}

Answer 1

 Try This 
if($cek > 0){
   $cek = $cek->row_array();
    $data_session = array(
        'username' => $cek['username'],
        'nama'     => $cek['nama']
        'status'   => "login"
        );
    $this->session->set_userdata($data_session);
    redirect(base_url("admin"));
}else{
    echo "Username dan password salah !";
}

Answer 2

這樣嘗試...

在codeigniter中， row_array()采用數組格式的第一匹配行，因此您的function aksi_login()必須像這樣...

function aksi_login(){
    $username = $this->input->post('username');
    $password = $this->input->post('password');
    $where = array(
        'username' => $username,
        'password' => md5($password)
        );
    $result = $this->m_login->cek_login("admin",$where);
    $cek = $this->m_login->cek_login("admin",$where)->num_rows();
    if($cek > 0){
        $cek = $result->row_array();//no your records are in array format having matched row
        $data_session = array(
            'username' => $cek['username'],
            'nama'     => $cek['nama']
            'status'   => "login"
            );
        $this->session->set_userdata($data_session);
        redirect(base_url("admin"));
    }else{
        echo "Username dan password salah !";
    }
}

有關更多信息，請參見此處。.https ://www.codeigniter.com/userguide3/database/results.html

Answer 3

1.m_login-> cek_login
該函數返回一個SQL QUERY OBJECT
2.SQL QUERY OBJECT-> num_rows（）函數返回INT（$ cek）
3.so $ cek是一個INT。 所以你不能像數組一樣使用（$ cek ['username']）

所以請嘗試這段代碼

function aksi_login(){
    $username = $this->input->post('username');
    $password = $this->input->post('password');
    $where = array(
        'username' => $username,
       'password' => md5($password)
    );
   $cek = $this->m_login->cek_login("admin",$where);//$cek is a Query Object
   $rows = $cek->num_rows();//$rows is a INT
   if($rows > 0){
        $cek = $cek->row_array();//now u get an Array
        $data_session = array(
           'username' => $cek['username'],
           'nama'     => $cek['nama']
           'status'   => "login"
           );
        $this->session->set_userdata($data_session);
        redirect(base_url("admin"));
    }else{
        echo "Username dan password salah !";
    }
}