在数组中加载多个模型-Codeigniter框架 [英] load multiple models in array - codeigniter framework

问题描述

<?php
class Home extends CI_Controller
{
    public function __construct()
    {
        // load libraries //
        $this->load->library('session');
        $this->load->library('database');
        $this->load->library('captcha');

        // alternative
        $this->load->library(array('session', 'database', 'captcha'));

        // load models //
        $this->load->model('menu_model', 'mmodel');
        $this->load->model('user_model', 'umodel');
        $this->load->model('admin_model', 'amodel');

        // alternative
        $this->load->model(array(?));
    }
}
?>

如何加载数组中的所有模型？

How can i load all models in array? is it possible?

推荐答案

对于模型，您可以执行以下操作：

For models, you can do this:

$models = array(
    'menu_model' => 'mmodel',
    'user_model' => 'umodel',
    'admin_model' => 'amodel',
);

foreach ($models as $file => $object_name)
{
    $this->load->model($file, $object_name);
}

但是如上所述，您可以创建文件 application / core / MY_Loader.php 并编写您自己的模型加载方法。我认为这可能有效（未经测试）：

But as mentioned, you can create file application/core/MY_Loader.php and write your own method for loading models. I think this might work (not tested):

class MY_Loader extends CI_Loader {

    function model($model, $name = '', $db_conn = FALSE)
    {
        if (is_array($model))
        {
            foreach ($model as $file => $object_name)
            {
                // Linear array was passed, be backwards compatible.
                // CI already allows loading models as arrays, but does
                // not accept the model name param, just the file name
                if ( ! is_string($file)) 
                {
                    $file = $object_name;
                    $object_name = NULL;
                }
                parent::model($file, $object_name);
            }
            return;
        }

        // Call the default method otherwise
        parent::model($model, $name, $db_conn);
    }
}

与上面的变量一起使用：

Usage with our variable from above:

$this->load->model($models);

您还可以允许在数组中传递单独的数据库连接，但是您需要具有多维数组，而不是我们使用的简单数组。无论如何，您很少需要这样做。

You could also allow a separate DB connection to be passed in an array, but then you'd need to have a multidimensional array, and not the simple one we used. It's not too often you'll need to do that anyways.

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