SyliusGeminiLocalTranslatePlugin

This plugin adds a translation button to every translatable field in the Sylius admin. It uses Chrome's built-in Gemini Nano model via the Prompt API — all inference runs on-device, no data ever leaves the browser.

Requirements

• Chrome 127+ (stable channel) with Prompt API for Gemini Nano enabled (chrome://flags/#prompt-api-for-gemini-nano)
• The Gemini Nano model must be downloaded (check chrome://components)

Installation

$ composer require barth/sylius-gemini-local-translate-plugin
$ yarn install --force
$ yarn build

Symfony configuration

The bundle registers itself automatically via Symfony Flex. Manual registration:

// config/bundles.php
return [
    Barth\SyliusGeminiLocalTranslatePlugin\BarthSyliusGeminiLocalTranslatePlugin::class => ['all' => true],
];

Routes registration

# config/routes.yaml
barth_gemini_local_translate_plugin:
    resource: "@BarthSyliusGeminiLocalTranslatePlugin/config/routes/admin_routing.yaml"

Usage

1. Go to any Sylius admin translatable field.
2. Select the target language and register (tone).
3. Click Translate — the field content is sent to Chrome's local Gemini Nano model.
4. The translated result replaces the field value.

No data leaves the browser. All inference runs on-device.

[!CAUTION] ⚠️ AI translation can contain errors. Do not rely blindly on the output; always review and verify the generated translations for accuracy and appropriate tone before saving.

Diagnostics

Visit /admin/gemini-local-translate-plugin/diagnostic in your admin to verify that the Chrome Prompt API is available.

Add it to custom translation field

If you added translated fields and the button does not appear, you may add a hook to your form:

sylius_twig_hooks:
  hooks:
    'sylius_admin.my_awesome_entity.create.content.sections.form.translations': 
      gemini_translate_button:
        template: '@BarthSyliusGeminiLocalTranslatePlugin/admin/form/translations/button.html.twig'
        priority: -10

Credits

This plugin was inspired by the GromNaN/local-browser-translator repository.

Demo