Good morning,

I can't find a way to download all the photos from a specific contest.

Did I look wrong?
Is it possible via the front-end?

Thank you so much.

I do markets where I sell beer and liquor and I hold photo competitions during these markets.
The winner receives a bottle of liquor at the end of the market.

And at each market I make a photo album on the Facebook page with the photos that were taken during the market.

This is why all my somewhat specific requests ;)

ok, i have a solution for this :

I have add a php script on my joomla installation and i have create one direct link by button on my site.

First : only connected user see the button

Second : joomla connected user check for access to the script

Is my logic correct?

The script checks which user is connected and will create an archive with only the photos from their competition.
For my use there is only one competition that will be created per user so that's good.

I just have in my treeessence for the future?

Is it possible to transform it into a module or plugin for your component?

<?php

define('_JEXEC', 1);
define('JPATH_BASE', __DIR__);
require_once JPATH_BASE . '/includes/defines.php';
require_once JPATH_BASE . '/includes/framework.php';

// Initialisation
$container = \Joomla\CMS\Factory::getContainer();
$container->alias('session.web', 'session.web.site')
          ->alias('session', 'session.web.site')
          ->alias('JSession', 'session.web.site')
          ->alias(\Joomla\CMS\Session\Session::class, 'session.web.site')
          ->alias(\Joomla\Session\Session::class, 'session.web.site')
          ->alias(\Joomla\Session\SessionInterface::class, 'session.web.site');

$app = $container->get(\Joomla\CMS\Application\SiteApplication::class);
\Joomla\CMS\Factory::$application = $app;

$userInfo = \Joomla\CMS\Factory::getApplication()->getSession()->get('user');

$db = \Joomla\CMS\Factory::getDbo();
$query = $db->getQuery(true);
$query->select($db->quoteName('title'))
      ->from($db->quoteName('#__competition_competitions'))
      ->where($db->quoteName('created_user_id') . ' = ' . $db->quote($userInfo->id));
$db->setQuery($query);

$competitionTitle = $db->loadResult();


/// Chemin du dossier à archiver et création de l'archive
$directoryPath = JPATH_BASE . '/ncuploads/' . $competitionId . '/';
$username = preg_replace("/[^a-zA-Z0-9]+/", "", $userInfo->username); // Utilisez $userInfo pour obtenir le nom d'utilisateur
$archiveName = JPATH_BASE . '/archives_gallery/' . $username . '_' . date('Y-m-d_H-i-s') . '.zip';

if (!\Joomla\CMS\Filesystem\Folder::exists(JPATH_BASE . '/archives_gallery/')) {
    \Joomla\CMS\Filesystem\Folder::create(JPATH_BASE . '/archives_gallery/');
}

$zip = new \ZipArchive();
if ($zip->open($archiveName, \ZipArchive::CREATE) !== TRUE) {
    exit("Impossible de créer l'archive <$archiveName>\n");
}


// Fonction récursive pour ajouter des fichiers au ZIP
function addFilesToZip($dir, $zip) {
    $files = scandir($dir);
    foreach ($files as $file) {
        if ($file == '.' || $file == '..') continue;
        $path = $dir . '/' . $file;
        if (is_dir($path)) {
            addFilesToZip($path, $zip); // Appel récursif sans $baseDir
        } else {
            if (strpos($file, 'big_') === 0) {
                // Ajoute le fichier directement à la racine de l'archive, sans $baseDir
                $zip->addFile($path, basename($file));
            }
        }
    }
}


addFilesToZip($directoryPath, $zip);
$zip->close();

// Préparation au téléchargement de l'archive
header('Content-Type: application/zip');
header('Content-Disposition: attachment; filename="' . basename($archiveName) . '"');
header('Content-Length: ' . filesize($archiveName));
readfile($archiveName);

Like this ?
I have a lot of questions because I'm learning at the same time ;)

<?php

define('_JEXEC', 1);
define('JPATH_BASE', __DIR__);
require_once JPATH_BASE . '/includes/defines.php';
require_once JPATH_BASE . '/includes/framework.php';

// Initialisation
$container = \Joomla\CMS\Factory::getContainer();
$container->alias('session.web', 'session.web.site')
          ->alias('session', 'session.web.site')
          ->alias('JSession', 'session.web.site')
          ->alias(\Joomla\CMS\Session\Session::class, 'session.web.site')
          ->alias(\Joomla\Session\Session::class, 'session.web.site')
          ->alias(\Joomla\Session\SessionInterface::class, 'session.web.site');

$app = $container->get(\Joomla\CMS\Application\SiteApplication::class);
\Joomla\CMS\Factory::$application = $app;

// Récupération des informations de l'utilisateur et vérification de la connexion
$userInfo = \Joomla\CMS\Factory::getApplication()->getIdentity();
if ($userInfo->guest) {
    exit('User is not logged in');
}


// Ajustement de la requête SQL pour récupérer l'ID de la compétition
$db = \Joomla\CMS\Factory::getDbo();
$query = $db->getQuery(true);
$query->select($db->quoteName('id'))
      ->from($db->quoteName('#__competition_competitions'))
      ->where($db->quoteName('created_user_id') . ' = ' . $db->quote($userInfo->id));
$db->setQuery($query);

$competitionId = $db->loadResult(); // Utilisation de l'ID pour les opérations suivantes



/// Chemin du dossier à archiver et création de l'archive
$directoryPath = JPATH_BASE . '/ncuploads/' . $competitionId . '/';
$username = preg_replace("/[^a-zA-Z0-9]+/", "", $userInfo->username); // Utilisez $userInfo pour obtenir le nom d'utilisateur
$archiveName = JPATH_BASE . '/archives_gallery/' . $username . '_' . date('Y-m-d_H-i-s') . '.zip';

if (!\Joomla\CMS\Filesystem\Folder::exists(JPATH_BASE . '/archives_gallery/')) {
    \Joomla\CMS\Filesystem\Folder::create(JPATH_BASE . '/archives_gallery/');
}

$zip = new \ZipArchive();
if ($zip->open($archiveName, \ZipArchive::CREATE) !== TRUE) {
    exit("Impossible de créer l'archive <$archiveName>\n");
}


// Fonction récursive pour ajouter des fichiers au ZIP
function addFilesToZip($dir, $zip) {
    $files = scandir($dir);
    foreach ($files as $file) {
        if ($file == '.' || $file == '..') continue;
        $path = $dir . '/' . $file;
        if (is_dir($path)) {
            addFilesToZip($path, $zip); // Appel récursif sans $baseDir
        } else {
            if (strpos($file, 'big_') === 0) {
                // Ajoute le fichier directement à la racine de l'archive, sans $baseDir
                $zip->addFile($path, basename($file));
            }
        }
    }
}


addFilesToZip($directoryPath, $zip);
$zip->close();

// Préparation au téléchargement de l'archive
header('Content-Type: application/zip');
header('Content-Disposition: attachment; filename="' . basename($archiveName) . '"');
header('Content-Length: ' . filesize($archiveName));
readfile($archiveName);

Well seen ;)

But in my case each user will have their competition necessarily created in advance.

On the other hand, I find it quite strange that for a photo competition component that there is not in the basic code the possibility for users to download their photos as well as for the competition organizers to download their respective gallery in one click.

Either a possibility of downloading by selecting the photos one by one or an upload destination folder by competition.

Maybe an idea for the next update of the component to make it native.

In any case, I'm making quite a bit of progress on the configurations and changes that I need to put in place so that it does exactly what I want hehe

Many thanks for your valuable help.