我想在prestashop中创建一个在数据库中保存文本的模块

<?php
if (!defined('_PS_VERSION_')) {
    exit;
}

class MyTextModule extends Module
{
    public function __construct()
    {
        $this->name = 'mytextmodule';
        $this->tab = 'front_office_features';
        $this->version = '1.0.0';
        $this->author = 'Your Name';
        $this->need_instance = 0;

        parent::__construct();

        $this->displayName = $this->l('My Text Module');
        $this->description = $this->l('A module to save text in the database.');
    }

    public function install()
    {
        if (!parent::install() ||
            !$this->registerHook('displayHome')
        ) {
            return false;
        }

        return true;
    }

    public function uninstall()
    {
        if (!parent::uninstall()) {
            return false;
        }

        return true;
    }

    public function hookDisplayHome($params)
    {
        $text = $this->getTextFromDatabase();

        $this->context->smarty->assign(array(
            'my_text' => $text,
        ));

        return $this->display(__FILE__, 'mytextmodule.tpl');
    }

    private function getTextFromDatabase()
    {
        // 在这里编写从数据库中获取文本的代码
        // 返回获取到的文本
    }
}

<div class="my-text">
    <p>{$my_text}</p>
</div>