CodeIgniter how to get from Model?_问答_开发者

开发者 https://www.devze.com 2023-02-08 07:57 出处：网络

I\'m trying to learn PHP with the newest CodeIgniter framework, but I\'m having some problems. I can\'t tell if I\'m just having some bad luck or if I\'m missing some fundamental concepts.

I'm trying to learn PHP with the newest CodeIgniter framework, but I'm having some problems. I can't tell if I'm just having some bad luck or if I'm missing some fundamental concepts.

Here's my View/index.php

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="utf-8">
    <title><?php echo $title; ?></title>
</head>
<body>

<?php foreach($forums as $f): ?>
<table>
<tr><td style="background-color:#ccc; font-weight:bold border: 1px solid black;">
<?php echo $f['name']; ?>
</td><开发者_开发技巧;/tr></table><br />
<?php endforeach; ?>

</body>
</html>

And here's my Models/index.php :

class Index_Model extends CI_Model {

    function __construct()
    {
        // Call the Model constructor
        parent::__construct();  
    }

    function getIndexListing(){
        $query = $this->db->query('Select name from Forums where parentid=0 order by sortorder asc');
        $rows =  $query->result_array();
        $query->free_result();  
    }  
}

And here's my Controllers/index.php

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

class Index extends CI_Controller {

    function __construct()
    {
        parent::__construct();
        // load users model
        if (! isset($this->Index_Model))
        {
        //   $this->load->model( 'Index_Model' );
        }
    }

    function index()
    {
        $data['forums']= $this->Index_Model->getIndexListing();
        $data['title'] = 'Welcome!';
        $this->load->view('index.php', $data);
    }
}

Problem : I can't figure out how to call getIndexListing() . When I do as I have here, I get the error Undefined property: Index::$Index_Model . But when I uncomment the $this->load->model( 'Index_Model' );, I get out of memory exceptions.

What's the right way to call getIndexListing() so I can populate my page? Did I misname my classes or files?

first of all you need to change controller name as index is the reserved name http://codeigniter.com/user_guide/general/reserved_names.html

Then you will have to have two different names for controller class and model class they cant be same as you cant have 2 classes with same name in same namespace. So let say you controller is whatever then it is good practice to have model class like whatever_model