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我是初学者 PHP 和 codeigniter 学习者。

有一个模型从 Controller 加载后无法工作,但从另一个模型加载后可以正常工作。

我正在为用户构建一个应用程序以获取反馈。用户可能有几个他可以向听众提出的问题。

从编码的角度来看,我有一个MY_Controller扩展 CI_Controller 的基本控制器“”。然后我有 2 个控制器,它们扩展了我的控制器 - 主页(用户将看到的主页)和问题(查看问题的详细信息)。

我有 2 个主要型号:user_modelquestion_model

当我从 user_model 中加载 question_model 时,一切顺利,程序运行良好。

但是当我从 Question 控制器中加载 question_model 时,它会运行构造函数(我已经做出了一个回显来检查它)并完成了构造函数(我再次回显来检查),但是当我调用 question_model 的方法时,我得到错误:

Fatal error: Call to a member function initialize() on a non-object in /Users/jaimequintas/Dropbox/3 CODIGO/feedbacking/application/controllers/question.php on line 17

有人可以帮我弄这个吗?我已经为此苦苦挣扎了一天多,但无论如何我都无法解决。

我的基本控制器:

class MY_controller extends CI_Controller{


public function index()
{
    $this->session->set_userdata('user_id', 8); //this is here just to initialize a user while in DEV
    $this->prepare_user(); //populates user with DB info

}

我的问题控制器(不能使用 $this->question_model 方法的控制器)

class Question extends MY_Controller {

public function index(){

    parent::index();

    $active_question = $this->uri->segment(2,0);

    $this->load->model('Question_model'); //this line runs well, as an echo statement after this gets printed
    $this->Question_model->initialize($active_question); //this is the line that triggers the "can't use method error"
    $this->Question_model->get_answers_list();

这是无法从控制器调用其方法的 Question_model。

class Question_model extends CI_Model {

public $question_id;
public $question_text;
public $vote_count; 
public $activation_date;
public $status; //Draft, Active, Archived
public $question_notes; //user notes

public $question_url; //the segment that will be added to codeigniter url feedbacking.me/"semgent"
public $answers_list; //array with answer objects
public $last_vote; //date of the last vote

public $vote_count_interval; //this is not computed with initialize, must call method when needed


public function __construct()
{
    parent::__construct();
}

public function initialize($question_id)
{
    //populate question from DB with: question_id, question_text, vote_count, activation_date, status
    // if $question_id ==0 creates an empty question (should be followed by create_question)


        $this->question_id = $question_id;
        $this->get_question_by_id();
        $this->get_question_votes();
}

最后是 User_model。我之所以把它放在这里是因为当这个模型加载 Question_model 时,一切正常。

class User_model extends CI_Model {

public $user_id;
public $user_email;
public $user_name;
public $plan_id;
public $questions_list; //array with question objects




public function __construct()
{
    parent::__construct();
    $this->load->database();
}

public function initialize($user_id)
{
    //populates user_info and question_list
    $this->user_id = $user_id;
    $this->get_user_by_id();
    $this->get_user_questions(); //this line calls the Question_model and works fine
}
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1 回答 1

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在模型中加载模型时,您需要获取代码点火器的实例(而不是 $this):

$CI =& get_instance();
$CI->load->model('Question_model');
$CI->Question_model->initialize($active_question);
$CI->Question_model->get_answers_list();
于 2013-05-24T03:45:13.477 回答