Question

Template loader taken from this question。尝试在视图文件中使用$this->load->view()时，除非将返回值指定为true，否则会引发MY_LOADER的问题。

扩展模板加载器

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class MY_Loader extends CI_Loader {

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

    public function template($template_name, $vars = array(), $return = FALSE) {
        if($return) {
            $content  = $this->view('templates/header', $vars, $return);
            $content .= $this->view($template_name, $vars, $return);
            $content .= $this->view('templates/footer', $vars, $return);

            return $content;
        } else { 
            $this->view('templates/header', $vars);
            $this->view($template_name, $vars);
            $this->view('templates/footer', $vars);
        }
    }
}
?>

基本控制器

<?php
defined('BASEPATH') OR exit('No direct script access allowed');

class Home extends CI_Controller {
    public function index() {
        $this->load->template('welcome_message');
    }
}

welcome_message

<?php echo $this->load->view('account/login'); ?> // Throws error
<?php echo $this->load->view('account/login', array(), true); ?> // No error

如果我没有将返回值定义为 true ，则会抛出错误Object of class MY_Loader could not be converted to string

完整的堆栈跟踪

    A PHP Error was encountered
Severity: 4096
Message: Object of class MY_Loader could not be converted to string
Filename: views/welcome_message.php
Line Number: 71
Code on line 71: <?php echo $this->load->view('account/login'); ?>

Backtrace:

File: application/views/welcome_message.php
Line: 71
Function: _error_handler

File: application/core/MY_Loader.php
Line: 17
Function: view
Code on line 17: $this->view($template_name, $vars);

File: application/controllers/Home.php
Line: 26
Function: template
Code on line 26: $this->load->template('welcome_message');

File: index.php
Line: 316
Function: require_once

这种用法在CI.2中正常工作，问题的原因是什么？

Answer 1

尝试使用下面的视图，而不使用echo

<?php $this->load->view('account/login'); ?>

而不是

<?php echo $this->load->view('account/login'); ?>

Codeigniter视图Fault Tolerance for an Aurora DB Cluster

在加载视图时扩展核心加载程序会导致问题

1 个答案: