การสร้าง model และเรียกใช้งาน พร้อมแนวทางการประยุกต์ ตอนที่ 1

// ลิ้งค์หน้าบริการของเรา
http://localhost/learnci/service
// ลิ้งค์หน้าจัดการเนื้อหา "บริการของเรา" ของ admin
http://localhost/learnci/admin/service

<div class="container">
    
Service 
<br><br>
<?php if($action==null){?>
<a href="<?=base_url('admin/service/create')?>" class="btn btn-primary btn-sm">Create</a>
<br><br>
<table class="table table-striped table-bordered table-condensed">
    <thead>
        <tr>
            <th width="50" class="text-center">#</th>
            <th>Title</th>
            <th width="150" class="text-center">Modify Date</th>
            <th width="150" class="text-center">Manage</th>
        </tr>
    </thead>
    <tbody>
       <?php for($i=1;$i<=5;$i++){?>
        <tr>
            <td class="text-center"><?=$i?></td>
            <td>Service <?=$i?></td>
            <td class="text-center"><?=date("Y-m-d H:i:s")?></td>
            <td class="text-center">
                <a href="<?=base_url('admin/service/edit/'.$i)?>" class="btn btn-success btn-sm">
                <span class="glyphicon glyphicon-pencil" aria-hidden="true"></span>
                </a>
                &nbsp;&nbsp;
                 <a href="<?=base_url('admin/service/delete/'.$i)?>" class="btn btn-danger btn-sm">
                <span class="glyphicon glyphicon-remove" aria-hidden="true"></span>
                </a>
                
            </td>
        </tr>
        <?php } ?>
    </tbody>
</table>
<?php } ?>

<?php if($action=="create"){?>
<a href="<?=base_url('admin/service')?>" class="btn btn-warning btn-sm">< Back</a>
<br><br>
<form action="<?=base_url('admin/service/create')?>" method="post" enctype="multipart/form-data">
<table class="table table-bordered">
<thead>
    <tr class="active">
        <th colspan="2">Add New Service</th>
    </tr>
</thead>
<tbody>
    <tr >
        <th width="120">Title:</th>
        <td>
            <input type="text" name="service_title" style="width:500px;">
        </td>
    </tr>
    <tr>
        <th width="120">Detail:</th>
        <td>
        <textarea name="service_detail" cols="85" rows="10"></textarea>
        </td>
    </tr>    
    <tr>
        <th width="120">Images:</th>
        <td>
        <input type="file" name="service_image" >
        </td>
    </tr>    
    <tr>
        <th></th>
        <td>
            <input type="submit" class="btn btn-success btn-sm" name="btn_add" value="Add Service">
        </td>
    </tr>
</tbody>
</table>    
    

</form>
<?php } ?>


<?php if($action=="edit"){?>
<a href="<?=base_url('admin/service')?>" class="btn btn-warning btn-sm">< Back</a>
<br><br>
<form action="<?=base_url('admin/service/edit/'.$id)?>" method="post" enctype="multipart/form-data">
<table class="table table-bordered">
<thead>
    <tr class="active">
        <th colspan="2">Edit Service</th>
    </tr>
</thead>
<tbody>
    <tr >
        <th width="120">Title:</th>
        <td>
            <input type="text" name="service_title" style="width:500px;">
        </td>
    </tr>
    <tr>
        <th width="120">Detail:</th>
        <td>
        <textarea name="service_detail" cols="85" rows="10"></textarea>
        </td>
    </tr>    
    <tr>
        <th width="120">Images:</th>
        <td>
        <input type="file" name="service_image" >
        </td>
    </tr>    
    <tr>
        <th></th>
        <td>
            <input type="submit" class="btn btn-success btn-sm" name="btn_add" value="Edit Service">
        </td>
    </tr>
</tbody>
</table>   

        
</form>
<?php } ?>

<?php if($action=="delete"){?>
<a href="<?=base_url('admin/service')?>" class="btn btn-warning btn-sm">< Back</a>
<br><br>
<div class="bg-success text-center" style="padding:10px;">
    <p class="text-success">Delete data complete</p>
    <a href="<?=base_url('admin/service')?>" class="text-success">< Back > </a>
</div>
<?php } ?>

</div>

<li><a href="<?=base_url('admin/service')?>">Service</a></li>  

        <?php if(isset($_SESSION['ses_admin_id']) && $_SESSION['ses_admin_id']!=""){?>
            <li><a href="<?=base_url('admin/user')?>">User</a></li>  
            <li><a href="<?=base_url('admin/service')?>">Service</a></li>  
            <li><a href="<?=base_url('admin/logout')?>">Logout</a></li>  
         <?php } ?>

<?php
class Service_model extends CI_Model {

    public function __construct()
    {
        parent::__construct();
    }
    
    public function getlist(){
        echo "List";
    }    
    
    public function create(){
        echo "Create";
    }
    
    public function view(){
        echo "View";
    }    
    
    public function edit(){
        echo "Edit";
    }  
    
    public function delete(){
        echo "Delete";
    }        

}

$this->load->model('model_name');

$this->load->model('service_model');

$this->load->model('admin/service_model');

$this->load->model('admin/service_model/');  // แบบนี้ไม่ถูกต้อง
$this->load->model('/admin/service_model');  // แบบนี้ไม่ถูกต้อง

$this->load->model('admin/service_model','service'); 
// แบบนี้ก็จะใช้ service แทน service_model

            $file_model=APPPATH.'/models/admin/'.ucfirst($admin_pages).'_model.php';
            if(file_exists($file_model))
            {
                $this->load->model('admin/'.$admin_pages.'_model');
            }    

            // แสดงหน้า admin อย่างง่ายเมื่อมีการล็อกอิน และสร้าง session
            $data['title']="Admin Home";  
            $data['title_h1']="Page Admin Home";  
            $data['action']=$action;
            $data['id']=$id;
            $file_model=APPPATH.'/models/admin/'.ucfirst($admin_pages).'_model.php';
            if(file_exists($file_model))
            {
                $this->load->model('admin/'.$admin_pages.'_model');
            }            
            $this->load->view('admin/admin_header', $data);  
            $this->load->view('admin/admin_'.$admin_pages,$data);  
            $this->load->view('admin/admin_footer');  

$file_model=APPPATH.'/models/admin/'.ucfirst($admin_pages).'_model.php';

            if(file_exists($file_model))
            {
                $this->load->model('admin/'.$admin_pages.'_model');
            }