The right way to add a new field in admin product page in Prestashop 1.7

Question

I\'ve created a module for Prestashop 1.7 in order to add a new field in the Admin Product page. Due to the lack of proper documentation, I want to ask the proper way to add my

Answer 1

To override the Product class :

Create a file "Product.php" in override/classes/

and add the following :

//override the class
class Product extends ProductCore {
    //add your attribute
    public $field_name;

    //override the construct function
    public function __construct($id_product = null, $full = false, $id_lang = null, $id_shop = null, \Context $context = null) {

        //add your custom field to the array $definitions['fields']
        self::$definition['fields']['field_name'] = [
            'type' => self::TYPE_STRING,
            'lang' => true, //if you have multiple languages on your site
            'required' => false,
            'size' => 255
        ];
    }
}

Then, add a new entry in your database, "field_name" in ps_product if lang is set to false or in ps_product_lang if lang is set to true.

You have different types : "TYPE_STRING", "TYPE_HTML", "TYPE_BOOL", "TYPE_INT", ... I don't know the exhaustive list. Depending on the type you choose you have to create the right column type in database ("VARCHAR", "TEXT", ....)

Some good documentation can be found in forum (stackoverflow, https://www.prestashop.com/forums/) but also on blog like this one : https://www.h-hennes.fr/blog/