prestashop displayFieldName() overload for fields translation

Question

I created a new module using MVC.

In my ObjectModel Class, I overload displayFieldName() function in order to get human reading fields errors when users doesn't fill a form well.

For example: "The Start date field is required" instead of "The start_date field is required".

I can't found how to translate this field within this function

/* Overload */
public static function displayFieldName($field, $class = __CLASS__, $htmlentities = true, Context $context = null)
{
    $fieldname = array(
        'date_start' => 'Start date',
        'title' => 'Title',
    );
    if ($fieldname[$field])
        return $fieldname[$field];
    else
        return $field;
}

I tried many things but can't find the usual l() function from here. Any idea?

Answer 1

You don't need to do that at all. It is already implemented in PrestaShop.

BackOffice > Localization > Translation > Field name translations

Note that during the installation you must copy your object model file in classes folder.

So if you have Object Model called MyDataObject you must have:

classes/MyDataObject.php in which you must have

<?php

class MyDataObjectCore extends ObjectModel
{

}

Do not forget the "Core" suffix, because the Fields Translation functionality needs it.