RainLab - Generate indexed attribute for existring translations

routes.php

<?php

/*
 *
 * Generate RainLab translation index
 * @see https://github.com/rainlab/translate-plugin#indexed-attributes
 *
 */


Route::get('generate', function () {

    $items = DB::table('rainlab_translate_attributes')
        ->where('model_type', 'Inetis\YOUR_PLUGIN\Models\YOUR_MODEL')
        ->get();

    $attribute = 'name';

    $items->each(function ($item) use ($attribute) {
        $data = json_decode($item->attribute_data);

        if (empty($data->{$attribute})) {
            return;
        }

        DB::insert('INSERT INTO rainlab_translate_indexes (locale, model_id, model_type, item, `value`) VALUES (?, ?, ?, ?, ?)',
            [
                $item->locale,
                $item->model_id,
                $item->model_type,
                $attribute,
                $data->{$attribute},
            ]);

    });

});