PrestaShop: How to load custom class (models) of my module - php

Question

Hello i am working on prestrashop its new for and i am trying to develop a module in admin panel i create a model calss sizeguide but when i click on add its showing the error ,
Fatal error: Class 'sizeguide' not found in classes\controller\AdminController.php on line 1614
i did try to fix it but i am not able to fix it even class is showing in class_index.php like this .
'Sizeguide' => array (
'path' => '',
'type' => 'class',
'override' => false,
),
'SizeguideCore' => array (
'path' => 'classes/Sizeguide.php',
'type' => 'class',
'override' => false,
),
please help me to fix this issue thanks in advance.

Answer 1

A moduleadmincontroller it's a little bit different of a modulefrontcontroller.
I'll write some guidelines.
Naming
The class name should be like this AdminCONTROLLERNAMEController.
For example:
class AdminGalleryController
The complete declaration should be:
class AdminGalleryController extends ModuleAdminController
{
// some stuff
}
Add 'controller' in DB
The new admin controller must be added in database, otherwise the dispatcher didn't find it.
This snippet add the new admin controller in the database:
$tab = new Tab();
foreach (Language::getLanguages() as $language) {
$tab->name[$language['id_lang']] = $tabName;
}
$tab->class_name = 'AdminGallery';
$tab->module = /*yourmodulename*/;
$tab->id_parent = 0;
/*
* If you want to add as a child of some admin controller
* that is in the backoffice menu you have to use this code:
* (int)Tab::getIdFromClassName('AdminCatalog');
* With that code you add your controller as a child of 'AdminCatalog' controller
*/
$tab->save()
Usually this snippet should be added in install method of your module.
After that to answer to your question, your class should not be in class_index.php, your model should be placed in your module and be loaded by him.
For example in your module constructor you can add this snippet:
public function __construct()
{
/* ... */
require_once( _PS_MODULE_DIR_ . DIRECTORY_SEPARATOR . $this->name . DIRECTORY_SEPARATOR . 'models' . DIRECTORY_SEPARATOR . 'Sizeguide.php' );
/* ... */
}