Joomla! 5.x Coding • Plugin to notify users of new articles

Code:

<?xml version="1.0" encoding="utf-8"?><extension type="plugin" group="system" version="5.0" method="upgrade">    <name>PLG_SYSTEM_NOTIFYNEWCONTENT</name>    <author>me</author>    <creationDate>2024-06-06</creationDate>    <copyright>(C) 2024 me</copyright>    <license>GNU General Public License version 2 or later; see LICENSE.txt</license>    <version>1.0.2</version>    <description>PLG_SYSTEM_NOTIFYNEWCONTENT_DESC</description>    <files>        <filename plugin="notifynewcontent">plg_system_notifynewcontent.php</filename>        <filename>install_script.php</filename>    </files>    <languages>        <language tag="en-GB">language/en-GB/en-GB.plg_system_notifynewcontent.ini</language>        <language tag="en-GB">language/en-GB/en-GB.plg_system_notifynewcontent.sys.ini</language>        <language tag="de-DE">language/de-DE/de-DE.plg_system_notifynewcontent.ini</language>        <language tag="de-DE">language/de-DE/de-DE.plg_system_notifynewcontent.sys.ini</language>    </languages>    <install>        <scriptfile>install_script.php</scriptfile>    </install></extension>

Code:

<?php// No direct accessdefined('_JEXEC') or die;use Joomla\CMS\Factory;use Joomla\CMS\Installer\InstallerScript;use Joomla\CMS\Language\Text;use Joomla\CMS\Log\Log;class PlgSystemNotifynewcontentInstallerScript extends InstallerScript{    public function preflight($type, $parent)    {        echo 'Install Preflight';        Log::add('Preflight action - Type: ' . $type, Log::NOTICE, 'install');    }    public function postflight($type, $parent)    {        echo 'Install Postflight';        Log::add('Postflight action - Type: ' . $type, Log::NOTICE, 'install');        if ($type == 'install') {            $this->addProfileField();        } elseif ($type == 'update') {            // Actions to perform after update        } elseif ($type == 'uninstall') {            $this->removeProfileField();        }    }    public function uninstall($parent)    {        echo 'uninstall()';        Log::add('Uninstall action', Log::NOTICE, 'install');        $this->removeProfileField();    }    protected function addProfileField()    {        echo 'addProfileField()';        Log::add('Adding profile field', Log::ERROR, 'install');        $db = Factory::getDbo();        $fieldTitle = Text::_('PLG_SYSTEM_NOTIFYNEWCONTENT_NOTIFY');        // Check if the field already exists        $query = $db->getQuery(true)            ->select('COUNT(*)')            ->from($db->quoteName('#_fields'))            ->where($db->quoteName('name') . ' = ' . $db->quote('notify_on_new_content'));        $db->setQuery($query);        if (!$db->loadResult())        {            Log::add('Field does not exist, creating new field', Log::NOTICE, 'install');            // Add the field            $query = $db->getQuery(true)                ->insert($db->quoteName('#_fields'))                ->columns(array(                    $db->quoteName('title'),                    $db->quoteName('name'),                    $db->quoteName('label'),                    $db->quoteName('type'),                    $db->quoteName('context'),                    $db->quoteName('state'),                    $db->quoteName('fieldparams'),                    $db->quoteName('created_time'),                    $db->quoteName('created_user_id')                ))                ->values(                    $db->quote($fieldTitle) . ', ' .                    $db->quote('notify_on_new_content') . ', ' .                    $db->quote($fieldTitle) . ', ' .                    $db->quote('radio') . ', ' .                    $db->quote('com_users.user') . ', ' .                    1 . ', ' .                    $db->quote(json_encode(array(                        'default' => '0',                        'options' => array(                            array('value' => '1', 'text' => 'Yes'),                            array('value' => '0', 'text' => 'No')                        )                    ))) . ', ' .                    $db->quote(Factory::getDate()->toSql()) . ', ' .                    $db->quote(Factory::getUser()->id)                );            $db->setQuery($query);            try {                $db->execute();                Log::add('Field created successfully', Log::NOTICE, 'install');            } catch (Exception $e) {                Log::add('Error creating field: ' . $e->getMessage(), Log::ERROR, 'install');            }        } else {            Log::add('Field already exists', Log::NOTICE, 'install');        }    }    protected function removeProfileField()    {        echo 'removeProfileField()';        Log::add('Removing profile field', Log::NOTICE, 'install');        $db = Factory::getDbo();        $query = $db->getQuery(true)            ->delete($db->quoteName('#_fields'))            ->where($db->quoteName('name') . ' = ' . $db->quote('notify_on_new_content'));        $db->setQuery($query);        try {            $db->execute();            Log::add('Field removed successfully', Log::NOTICE, 'install');        } catch (Exception $e) {            Log::add('Error removing field: ' . $e->getMessage(), Log::ERROR, 'install');        }    }}

Code:

<?php// No direct accessdefined('_JEXEC') or die;use Joomla\CMS\Plugin\CMSPlugin;use Joomla\CMS\Factory;use Joomla\CMS\Language\Text;use Joomla\CMS\Uri\Uri;use Joomla\CMS\Router\Route;class PlgSystemNotifynewcontent extends CMSPlugin{    protected $app;    protected $db;    public function __construct(&$subject, $config)    {        parent::__construct($subject, $config);        $this->db = Factory::getDbo();    }    public function onContentAfterSave($context, $article, $isNew)    {        error_log('onContentAfterSave triggered');        if ($context == 'com_content.article' && $isNew)        {            error_log('New article detected');            $this->notifyUsers($article);        }    }    protected function notifyUsers($article)    {        // Get the field ID for 'notify_on_new_content'        $query = $this->db->getQuery(true)            ->select($this->db->quoteName('id'))            ->from($this->db->quoteName('#_fields'))            ->where($this->db->quoteName('name') . ' = ' . $this->db->quote('notify_on_new_content'));        $this->db->setQuery($query);        $fieldId = $this->db->loadResult();        if (!$fieldId)        {            error_log('Field "notify_on_new_content" not found.');            return;        }        // Get all users with the "Notify on new content" enabled        $query = $this->db->getQuery(true)            ->select($this->db->quoteName(array('u.email', 'u.name')))            ->from($this->db->quoteName('#_users', 'u'))            ->join('INNER', $this->db->quoteName('#_fields_values', 'fv') . ' ON ' . $this->db->quoteName('u.id') . ' = ' . $this->db->quoteName('fv.item_id'))            ->where($this->db->quoteName('fv.field_id') . ' = ' . (int) $fieldId)            ->where($this->db->quoteName('fv.value') . ' = ' . $this->db->quote('1'));        $this->db->setQuery($query);        $users = $this->db->loadObjectList();        error_log('Users to notify: ' . count($users));        // Get the category name        $categoryId = $article->catid;        $categoryQuery = $this->db->getQuery(true)            ->select($this->db->quoteName('title'))            ->from($this->db->quoteName('#_categories'))            ->where($this->db->quoteName('id') . ' = ' . (int) $categoryId);        $this->db->setQuery($categoryQuery);        $categoryName = $this->db->loadResult();        // Prepare email subject and body        $subject = Text::_('PLG_SYSTEM_NOTIFYNEWCONTENT_EMAIL_SUBJECT');        $bodyTemplate = Text::_('PLG_SYSTEM_NOTIFYNEWCONTENT_EMAIL_BODY');        // Generate SEF URL        $articleLink = Route::_(            'index.php?option=com_content&view=article&id=' . $article->id . ':' . $article->alias . '&catid=' . $article->catid . '&Itemid=' . $article->params->get('item_id')        , false);        // Format the publish date        $publishDate = (new \Joomla\CMS\Date\Date($article->publish_up))->format('d.m.Y');        $body = str_replace(            array('{ARTICLE_TITLE}', '{ARTICLE_CATEGORY}', '{ARTICLE_PUBLISH_DATE}', '{ARTICLE_LINK}'),            array($article->title, $categoryName, $publishDate, Uri::root() . $articleLink),            $bodyTemplate        );        error_log('Email body: ' . $body);        // Send email to each user        foreach ($users as $user)        {            $mail = Factory::getMailer();            $mail->addRecipient($user->email);            $mail->setSubject($subject);            $mail->setBody($body);            $mail->Send();            error_log('Email sent to: ' . $user->email);        }    }}