Sylius Translation Flags Plugin

A Sylius admin plugin that adds flag icons to the translations accordions and to the locales list in the back-office: every locale label gets a flag icon before a capitalized locale name. Flags used to be displayed in older versions of Sylius but were removed from the core - see the ADR for the reasons.

Why 2.2 is the floor: the flagpack icon set only exists in Sylius 2.2+ - on 2.1 no flag would render, and on 2.0 the accordion template is different and ux_icon('flagpack:…') throws.

Symfony 8 needs Sylius 2.3 (hence PHP 8.4+): Sylius 2.2 stays on Symfony 7.4.

composer require cyllene-digital/sylius-translation-flags-plugin

The Flex recipe registers the bundle. Without Flex:

// config/bundles.php
CylleneDigital\SyliusTranslationFlagsPlugin\CylleneDigitalSyliusTranslationFlagsPlugin::class => ['all' => true],

That's it - the overrides are active as soon as the bundle is registered.

A compiler pass registers the plugin's templates/admin directory under the @SyliusAdmin Twig namespace right before the core AdminBundle's own templates/ directory (src/DependencyInjection/Compiler/RegisterAdminTemplatesPathPass.php), so the plugin's copies shadow two core templates:

• shared/helper/translations.html.twig - the translations accordion of every translations form: products, variants, taxons, promotions, payment and shipping methods, options, attributes…
• locale/grid/field/name.html.twig - the name column of the locales list.

Both render the same label, templates/shared/locale_label.html.twig (@CylleneDigitalSyliusTranslationFlagsPlugin/shared/locale_label.html.twig): the flag, then the capitalized locale name.

Your project's overrides still come first: the usual Symfony bundle override wins over the plugin.

• To change the label everywhere (flag size, no capitalization…), copy templates/shared/locale_label.html.twig to templates/bundles/CylleneDigitalSyliusTranslationFlagsPlugin/shared/locale_label.html.twig.
• To change one screen, copy the plugin's template to the same path under templates/bundles/SyliusAdminBundle/, e.g. templates/bundles/SyliusAdminBundle/shared/helper/translations.html.twig.

Clear the cache if the templates/bundles/… directory did not exist before.

Sylius ships 16 flagpack flags with its admin: au, br, ca, cn, de, es, fr, gb, in, it, jp, mx, nz, pl, pt and us. The flag of any other country (nl, be, ch…) is downloaded by Symfony UX Icons from the Iconify API (https://api.iconify.design) the first time it is rendered, then kept in the Symfony system cache until the next cache clear.

Because Sylius sets ux_icons.ignore_not_found: true, a server that cannot reach that API renders those labels without a flag and without an error. If your servers have no outbound HTTPS access, allow api.iconify.design, or check that every locale you use has its flag among the 16 above.

bin/console ux:icons:import flagpack:<code> does not work around it: it writes into assets/icons/, while Sylius maps the flagpack prefix to its own directory - the only one looked up for that prefix.

Exercised on a real Sylius 2.3 back office: the functional tests render the taxon edit page and the locales list through the HTTP kernel, log an admin in, and assert on the rendered HTML - every accordion header and every locale name carries exactly one flag icon, before the capitalized locale name. Both screens were also walked by hand in the development environment (PHP 8.4, Sylius 2.3, Symfony 7.4, MariaDB).

The continuous integration matrix runs the unit and functional tests, PHPStan at max level, the coding standard, container and template linting and a strict composer validate on PHP 8.3, 8.4 and 8.5, against Sylius 2.2 and 2.3 with MariaDB. (sylius/test-application is a development-only package that ships alpha versions in every minor - v2.3.0-ALPHA.3 / v2.2.0-ALPHA.1 here - that is normal.)

Sylius 2.1 and 2.0 are not supported - see the compatibility note above.

The scope stops at the back-office translations accordion and locales list: the shop is untouched, and the plugin carries no configuration, no route, no table and no command.

CONTRIBUTING.md - setting up the test environment, standards, what has to pass.

A flaw is reported privately: SECURITY.md. Do not open it as a public issue.

Released under the MIT licence - see LICENSE. The flag icons come from flagpack (MIT): shipped with Sylius for 16 of them, fetched from Iconify for the others (see "In production").

Package: cyllene-digital/sylius-translation-flags-plugin

Maintained by Cyllene, on GitHub as @CylleneDigital