2013-02-17 120 views
0

這裏我的第一個問題。我在PHP和CI一個新手,但我想學習:)PHP致命錯誤:調用未定義的方法stdClass :: num_rows()在(...)行36

首先我的模型:

class Login_model extends MY_Model {

protected $table = 'users'; 
protected $primary = 'user_id'; 

function __construct() 
{ 

    parent::__construct(); 
} 

public function validate() 
{ 
    // Récupère le POST du login 
    $user_mail = $this->input->post('user_mail'); 
    $password = sha1($this->input->post('user_mail') . $this->input->post('password')); 

    //Execution de la requete 

    $query = $this->users_m->get(array('user_mail' => $user_mail)); 
    // Verification qu'il existe un enregistrement 
    var_dump($query); 
    if($query->num_rows() == 1) 
    { 
     // If there is a user, then create session data 
     $row = $query->row(); 
     $data = array(
       'userid' => $row->userid, 
       'fname' => $row->fname, 
       'lname' => $row->lname, 
       'username' => $row->username, 
       'validated' => true 
       ); 
      $this->session->set_userdata($data); 
      return true; 
      //  } 
      // Si le login ne se valide pas 
      // return false. 
      return false; 
     } 
    } 
} 

這個模型擴展My_model MY_MODEL.PHP

<?php 

if (!defined('BASEPATH')) exit('No direct script access allowed'); 

/** 
* MY_Model 
*/ 
class MY_Model extends CI_Model 
{ 

    /** 
    * Connexion à la BDD 
    * 
    * @var object 
    */ 
    protected $link; 

    /** 
    * Groupe de connexion BDD 
    * 
    * @var string 
    */ 
    protected $db_group = 'default'; 

    /** 
    * Table de la BDD 
    * 
    * @var string 
    */ 
    protected $table = ''; 

    /** 
    * Clé(s) primaire(s) 
    * 
    * @var string/array 
    */ 
    protected $primary = 'id'; 

    /** 
    * Déclanche une exception 
    * 
    * @var boolean 
    */ 
    private $_throw_exception = TRUE; 

    /** 
    * Constructeur 
    */ 
    public function __construct() 
    { 
    parent::__construct(); 

    if ($this->table != '') 
    { 
     $this->_set_link(); 
    } 
    } 

    /** 
    * Connexion à la BDD 
    */ 
    private function _set_link() 
    { 
    $this->link = $this->load->database($this->db_group, TRUE); 
    } 

    /** 
    * Active la gestion des exceptions 
    */ 
    public function enable_exception() 
    { 
    $this->_throw_exception = TRUE; 
    } 

    /** 
    * Desactive la gestion des exceptions 
    */ 
    public function disable_exception() 
    { 
    $this->_throw_exception = FALSE; 
    } 

    /** 
    * Récupère un enregistrement unique 
    * 
    * @param array $where 
    * @return boolean 
    * @throws Exception 
    */ 
    public function get($where = array()) 
    { 
    if (is_array($where) && $where) 
    { 
     foreach ($where as $key => $value) 
     { 
     $this->link->where($key, $value); 
     } 
    } 

    $query = $this->link->get($this->table); 

    /* Traitement de la requete */ 
    $data = FALSE; 

    if (is_object($query)) 
    { 
     if ($query->num_rows() == 1) 
     { 
     $result = $query->result(); 
     $data = $result[0]; 
     } 
     else if ($this->_throw_exception) 
     { 
     throw new Exception($query->num_rows(), 11); 
     } 
    } 
    else 
    { 
     throw new Exception($this->link->_error_number() . ":" . $this->link->_error_message(), 10); 
    } 
    return $data; 
    } 

    /** 
    * Liste des enregistrements de la table 
    * 
    * @param array $orders 
    * @return array 
    */ 
    public function get_all($where = array(), $orders = array(), $limit = NULL, $offset = NULL) 
    { 
    /* Conditions */ 
    if (is_array($where) && $where) 
    { 
     foreach ($where as $key => $value) 
     { 
     $this->link->where($key, $value); 
     } 
    } 

    /* Tris */ 
    if (is_array($orders) && $orders) 
    { 
     foreach ($orders as $order) 
     { 
     $this->link->order_by("$this->table.$order"); 
     } 
    } 
    else if ($orders) 
    { 
     $this->link->order_by("$this->table.$orders"); 
    } 
    else if (is_array($this->primary)) 
    { 
     foreach ($this->primary as $order) 
     { 
     $this->link->order_by("$this->table.$order"); 
     } 
    } 
    else 
    { 
     $this->link->order_by("$this->table.$this->primary"); 
    } 

    /* Requete */ 
    $query = $this->link->get($this->table, $limit, $offset); 

    /* Traitement de la requete */ 
    $data = array(); 

    if (is_object($query)) 
    { 
     if ($query->num_rows() > 0) 
     { 
     $data = $query->result(); 
     } 
    } 
    else if ($this->_throw_exception) 
    { 
     throw new Exception($this->link->_error_number() . ":" . $this->link->_error_message(), 10); 
    } 

    /* Retour */ 
    return $data; 
    } 

    /** 
    * Nombre d'enregistrements de la table 
    * 
    * @return integer 
    */ 
    public function count($where = array()) 
    { 
    if (is_array($where) && $where) 
    { 
     foreach ($where as $key => $value) 
     { 
     $this->link->where($key, $value); 
     } 
    } 

    $this->link->from($this->table); 

    return $this->link->count_all_results(); 
    } 

    /** 
    * Insertion dans la BDD 
    * 
    * @param array $data 
    * @return boolean 
    * @throws Exception 
    */ 
    public function insert($data = array()) 
    { 
    $insert = FALSE; 
    if ($this->link->insert($this->table, $data)) 
    { 
     if (is_array($this->primary)) 
     { 
     $insert = TRUE; 
     } 
     else if (isset($data[$this->primary])) 
     { 
     $insert = $data[$this->primary]; 
     } 
     else 
     { 
     $insert = $this->link->insert_id(); 
     } 
    } 
    else if ($this->_throw_exception) 
    { 
     throw new Exception($this->link->_error_number() . ":" . $this->link->_error_message(), 20); 
    } 
    return $insert; 
    } 

    /** 
    * Insertion de masse dans une base de donnée 
    * 
    * @param array $data 
    * @return boolean 
    * @throws Exception 
    */ 
    public function insert_batch($data) 
    { 
    $insert = FALSE; 

    if ($this->link->insert_batch($this->table, $data)) 
    { 
     $insert = TRUE; 
    } 
    else if ($this->_throw_exception) 
    { 
     throw new Exception($this->link->_error_number() . ":" . $this->link->_error_message(), 20); 
    } 

    return $insert; 
    } 

    /** 
    * Mise à jour d'enregistrements de la BDD 
    * 
    * @param array $data 
    * @param array $where 
    * @return boolean 
    * @throws ExceptionModel 
    */ 
    public function update($data = array(), $where = array()) 
    { 
    $update = FALSE; 

    if (is_array($where) && $where) 
    { 
     foreach ($where as $key => $value) 
     { 
     $this->link->where($key, $value); 
     } 
    } 

    if ($this->link->update($this->table, $data)) 
    { 
     $update = TRUE; 
    } 
    else if ($this->_throw_exception) 
    { 
     throw new Exception($this->link->_error_number() . ":" . $this->link->_error_message(), 30); 
    } 

    return $update; 
    } 

    /** 
    * Suppression d'enregistrements de la BDD 
    * 
    * @param array $where 
    * @return boolean 
    * @throws Exception 
    */ 
    public function delete($where = array()) 
    { 
    $delete = FALSE; 

    if (is_array($where) && $where) 
    { 
     foreach ($where as $key => $value) 
     { 
     $this->link->where($key, $value); 
     } 
    } 

    if ($this->link->delete($this->table)) 
    { 
     $delete = TRUE; 
    } 
    else if ($this->_throw_exception) 
    { 
     throw new Exception($this->link->_error_number() . ":" . $this->link->_error_message(), 40); 
    } 

    return $delete; 
    } 

} 

/* End of file MY_Model.php */ 
/* Location: ./application/core/MY_Model.php */ 

我有我的控制器: Accueil(將默認路由)

方法login()調用視圖login.php

ACCUEIL.PHP:

<?php 

if (!defined('BASEPATH')) 
    exit('No direct script access allowed'); 

class Accueil extends MY_Controller 
{ 

    public function __construct() 
    { 
     parent::__construct(); 
     $this->load->model('users_model', 'users_m'); 
     $this->load->library('form_validation'); 
     $this->load->helper(array('form', 'url')); 
     $this->load->library('template'); 
    } 

    public function index($msg = NULL) //msg en cas d'erreur , NULL si pas d'erreur 
    { 
     $data['msg'] = $msg; 
     $this->load->view('/login', $data); 
    } 

    public function login() 
    { 
     // Chargement du model de login 
     $this->load->model('login_model'); 
     // Validation que l'user puisse se connecter 
     $result = $this->login_model->validate(); 
     // Verification du résultat 
     if (!$result) 
     { 
      // Pas de validation on renvoit vers l'index 
      $msg = '<font color=red>Nom d\'utilisateur ou mot de passe incorrect(s).</font><br />'; 
      $this->index($msg); 
     } 
     else 
     { 
      // Si validation ok, 
      // On l'envoit vers la partie "protégée" 
      redirect('home'); 
     } 
    } 

} 

最後認爲:login.php中

<!DOCTYPE html> 
<html> 
    <head> 
     <meta charset="utf-8"> 
     <title>connexion</title> 
     <meta name="viewport" content="width=device-width, initial-scale=1.0"> 
     <meta name="description" content=""> 
     <meta name="author" content="kliklipse"> 

     <!-- Le styles --> 
     <link rel="stylesheet" href="<?php echo css_url('bootstrap.min'); ?>"> 
     <style> 
      body { 
       padding-top: 40px; 
       padding-bottom: 40px; 
       background-color: #f5f5f5; 
      } 

      .form-signin { 
       max-width: 300px; 
       padding: 19px 29px 29px; 
       margin: 0 auto 20px; 
       background-color: #fff; 
       border: 1px solid #e5e5e5; 
       -webkit-border-radius: 5px; 
       -moz-border-radius: 5px; 
       border-radius: 5px; 
       -webkit-box-shadow: 0 1px 2px rgba(0,0,0,.05); 
       -moz-box-shadow: 0 1px 2px rgba(0,0,0,.05); 
       box-shadow: 0 1px 2px rgba(0,0,0,.05); 
      } 
      .form-signin .form-signin-heading, 
      .form-signin .checkbox { 
       margin-bottom: 10px; 
      } 
      .form-signin input[type="text"], 
      .form-signin input[type="password"] { 
       font-size: 16px; 
       height: auto; 
       margin-bottom: 15px; 
       padding: 7px 9px; 
      } 

     </style> 
     <link rel="stylesheet" href="<?php echo css_url('bootstrap-responsive.min'); ?>"> 
     <link rel="stylesheet" href="<?php echo css_url('main'); ?>"> 


     <!-- HTML5 shim, for IE6-8 support of HTML5 elements --> 
     <!--[if lt IE 9]> 
      <script src="../assets/js/html5shiv.js"></script> 
     <![endif]--> 

     <!-- Fav and touch icons --> 
     <link rel="apple-touch-icon-precomposed" sizes="144x144" href="../assets/ico/apple-touch-icon-144-precomposed.png"> 
     <link rel="apple-touch-icon-precomposed" sizes="114x114" href="../assets/ico/apple-touch-icon-114-precomposed.png"> 
     <link rel="apple-touch-icon-precomposed" sizes="72x72" href="../assets/ico/apple-touch-icon-72-precomposed.png"> 
     <link rel="apple-touch-icon-precomposed" href="../assets/ico/apple-touch-icon-57-precomposed.png"> 
     <link rel="shortcut icon" href="../assets/ico/favicon.png"> 
    </head> 

    <body> 

     <div class="container"> 



      <form class="form-signin" action="<?php echo base_url();?>accueil/login" method="post" name="process"> 
       <h2 class="form-signin-heading">Identifiez vous</h2> 
       <br /> 
       <?php if(! is_null($msg)) echo $msg;?> 
       <input type="text" name="user_mail" id="user_mail" class="input-block-level" placeholder="Adresse Email"> 
       <input type="password" name="password" id="password" class="input-block-level" placeholder="Mot de passe"> 
       <label class="checkbox"> 
        <input type="checkbox" value="remember-me"> Se souvenir de moi 
       </label> 
       <button class="btn btn-large btn-primary" type="submit">Se connecter</button> 
      </form> 

     </div> <!-- /container --> 

     <div id="footer"> 
      <div class="container-narrow"> 
       <p>&copy; Kliklipse 2013 <a href="<?php echo base_url(); ?>">Gestion des utilisateur & groupes</a></p> 
      </div> 
     </div> 
     <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.0/jquery.min.js"></script> 

     <script src="<?php echo js_url('bootstrap.min'); ?>"></script> 
     <script src="<?php echo js_url('sorttable'); ?>"></script> 
     <script>var base_url = <?php echo base_url(); ?></script> 

     <!-- {elapsed_time} seconds--> 
    </body> 
</html> 

我的錯誤與NUM_ROWS(),它的一個未定義的方法......只是不知道爲什麼..

如果有任何問題,請問我(對不起,我的英語^^)

+0

這不是數據庫類的功能? http://ellislab.com/codeigniter/user-guide/database/results.html 也許我做了錯誤的使用它? – Kliklipse 2013-02-17 13:08:10

+0

我問自己點什麼...... Login_model擴展了My_Model。 My_Model擴展了CI_Model。 和Num_rows()是CI_Model的一種方法... 這是原因嗎?我該如何解決它? – Kliklipse 2013-02-17 13:15:27

+0

我的歉意。 CodeIgniter在PHP中使用name方法名稱作爲mysqli num_rows()方法。我正在尋找你的數據庫連接對象。在這種情況下,我所能想到的就是檢查$ query是否已成功連接到數據庫。 – 2013-02-17 13:16:24

回答

1

num_rows()僅用於CI的數據庫對象資源(不是結果)。而這$query = $this->users_m->get(array('user_mail' => $user_mail));看起來不像。

嘗試這樣:

$query = $this->db->get_where('table_name', array('user_mail' => $user_mail));

然後你可以使用$query->num_rows();

0

從您的問題中不清楚哪個電話是num_rows()導致錯誤。但我會假設它是從你的登錄模式,行var_dump($query);

在你的My_modelget功能,您有以下之後:

if (is_object($query)) 
{ 
    if ($query->num_rows() == 1) 
    { 
    $result = $query->result(); 
    $data = $result[0];    <<<<<< NOTE THIS 
    } 
    else if ($this->_throw_exception) 
    { 
    throw new Exception($query->num_rows(), 11); 
    } 
} 

,你從get返回$data

此時$data是一個$CI_result對象,它沒有num_rows()方法可用,這是來自查詢類的方法。

CI results docs

如果您在My_model爲NUM行檢查,你不需要做在你的登錄模式。您可以直接調用這些方法,因爲您已經完成了檢查。

0

我發現錯誤在哪裏。

if ($query->num_rows() == 1) 

是不正確的語法

if ($query->num_rows == 1) 

是正確的。$查詢 - > NUM_ROWS值爲 「1」

最後我選擇的解決方案是:

我user_model.php(與用戶數據庫操作)

class Users_model extends MY_Model 
{ 

    protected $table = 'users'; 
    protected $primary = 'user_id'; 

    public function liste() 
    { 

     $this->link->select('user_id'); 
     $this->link->select('user_name'); 
     $this->link->select('user_mail'); 
     $this->link->select("GROUP_CONCAT(group_name ORDER BY group_name SEPARATOR '<br />') AS user_groups", FALSE); 

     $this->link->join('groups_users', 'users_user_id=user_id', 'left'); 
     $this->link->join('groups', 'group_id=groups_group_id', 'left'); 

     $this->link->group_by('user_id'); 

     return parent::get_all(array(), array('user_name ASC')); 
    } 

    public function validate($mail, $password) 
    { 
     $pass_hashed = sha1($mail . $password); 
     return parent::get(array('user_mail'  => $mail, 'user_password' => $pass_hashed)); 
    } 

} 
/* End of file users_model.php */ 

/* Location: ./application/models/users_model.php */ 

validate方法更簡單,我不做任何控制。只是Db操作。現在

我控制器accueil.php

<?php 

if (!defined('BASEPATH')) 
    exit('No direct script access allowed'); 

class Accueil extends MY_Controller 
{ 

    public function __construct() 
    { 
     parent::__construct(); 
     $this->load->model('users_model', 'users_m');  // Chargement model 
     $this->load->library('form_validation');    // Librairie validation 
     $this->load->helper(array('form', 'url'));   // helpers 
     $this->load->library('template');     // Librairie template 
    } 

    public function index($msg = NULL) //msg en cas d'erreur , NULL si pas d'erreur 
    { 
     $data['msg'] = $msg; 
     $this->load->view('login', $data); 
    } 

public function login() 
    { 

     try 
     { 
      $user = $this->users_m->validate($this->input->post('user_mail'), $this->input->post('password')); 

      $this->session->set_userdata(array(
       'user_id' => $user->user_id, 
       'user_mail' => $user->user_mail, 
       'validated' => TRUE 
      )); 

      redirect('users'); 
     } 
     catch (Exception $e) 
     { 
      // Pas de validation on renvoit vers l'index avec un message d'erreur 
      $msg = '<font color=red>Nom d\'utilisateur ou mot de passe incorrect(s).</font><br />'; 
      $this->index($msg); 
     } 
    } 

} 

/* End of file accueil.php */ 
/* Location: ./application/controllers/accueil.php */ 

我的看法還是一樣,沒有變化。

我想我已經寫了更準確的代碼這次。

用控件分開數據庫操作。

隨時可以發表評論。

0

有時會出現這種情況,如果下面的語句丟失 (即網址助手尚未手動或自動加載。) $this->load->helper('url');

0

這個替換

num_row() 

if(!empty($Variable)) 
............... 
+0

這是如何解決問題中定義的問題的?代碼不明確...... – Farside 2016-08-22 14:49:56

0

如果太難解決使用:

$count($query); 

代替

$query->num_rows(); 

:/

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