Permission Denied in admin custom page opencart

Question

I followed Below procedure But still im getting permission denied error . I am using opencart 2.x

1) Create a new file in admin/controller/custom/helloworld.php

Your filename and controller name should be the same in desc order:

helloworld.php

<?

    class ControllerCustomHelloWorld extends Controller{ 
        public function index(){
                    // VARS
                    $template="custom/hello.tpl"; // .tpl location and file
            $this->load->model('custom/hello');
            $this->template = ''.$template.'';
            $this->children = array(
                'common/header',
                'common/footer'
            );      
            $this->response->setOutput($this->render());
        }
    }
    ?>

2) Create a new file in admin/view/template/custom/hello.tpl

Hello.tpl



 <?php echo $header; ?>
    <div id="content">
    <h1>HelloWorld</h1>
    <?php
    echo 'I can also run PHP too!'; 
    ?>
    </div> 
    <?php echo $footer; ?>

3) Create a new file in admin/model/custom/hello.php

  <?php
    class ModelCustomHello extends Model {
        public function HellWorld() {
            $sql = "SELECT x FROM `" . DB_PREFIX . "y`)"; 
            $implode = array();
            $query = $this->db->query($sql);
            return $query->row['total'];    
        }       
    }

?>

4) You then need to enable the plugin to avoid permission denied errors:

Opencart > Admin > Users > User Groups > Admin > Edit Select and Enable the Access Permission.

Answer 1

Here is the way add custom helloworld module in admin

1. create admin/controller/custom/helloworld.php

    <?php class ControllerCustomHelloworld extends Controller { public function index() { $this->load->language('custom/helloworld'); $this->document->setTitle($this->language->get('heading_title')); $this->load->model('custom/helloworld'); $data['header'] = $this->load->controller('common/header'); $data['column_left'] = $this->load->controller('common/column_left'); $data['footer'] = $this->load->controller('common/footer'); $this->response->setOutput($this->load->view('custom/helloworld.tpl', $data)); } } ?> 

2. Create admin/model/custom/helloworld.php

    <?php class ModelCustomHelloworld extends Model { public function helloworldmodel(){ } } ?> 

3. create admin/language/english/custom/helloworld.php

    <?php // Heading $_['heading_title'] = 'Hello world Admin module'; ?> 

4. Create admin/view/template/custom/helloworld.tpl

    <?php echo $header; ?><?php echo $column_left; ?> <h1><?php echo "This is helloworld admin module in opencart 2.xxx "; ?></h1> <?php echo $footer; ?> 

5. Go to system -> users -> user groups -> edit Administrator group . Select all to access permission and modify permission and save.

Here is the tutorial http://blog.a2bizz.com/index.php/2015/12/17/create-custom-module-in-opencart-admin/

Answer 2

I would suggest you to have a look into following URLs for the resolution-

Step by step process to create a custom Admin page in Opencart

Fixing the permission error

I hope above links will help you.