SurvosBabelBundle

SurvosBabelBundle provides normalized translation storage with runtime locale resolution using PHP 8.4 property hooks.

This bundle is intentionally opinionated and not plug-and-play. It is designed for:

• applications with many translatable entities,
• batch translation workflows,
• search indexing per locale,
• avoiding per-entity translation join tables.

If you want “EntityTranslation tables per entity”, this is not that bundle.

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Core idea (read this first)

Every translatable field has two representations:

1. A persisted backing field (the source text)
2. A runtime property hook (the localized value)

Example:

$product->title = 'Chair';     // write source text
echo $product->title;          // read localized text (if available)

Only the backing field is persisted. The localized value is resolved at runtime.

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Hard requirements (non-negotiable)

If you violate any of these, Babel will not work.

1. PHP 8.4 property hooks

This bundle requires PHP 8.4.

2. BabelHooksInterface must be implemented

Entities using Babel must implement:

Survos\BabelBundle\Contract\BabelHooksInterface

The easiest way is to use the provided trait:

use Survos\BabelBundle\Entity\Traits\BabelHooksTrait;

⚠️ The compiler pass relies on this interface. If it is missing, the entity will not be indexed.

3. Naming convention is strict

For every logical field foo:

Purpose	Name
Backing property	fooBacking
Runtime property	foo

The compiler pass and runtime resolver assume this naming.

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Minimal working example

<?php
declare(strict_types=1);

namespace App\Entity;

use Doctrine\ORM\Mapping as ORM;
use Survos\BabelBundle\Attribute\BabelStorage;
use Survos\BabelBundle\Attribute\Translatable;
use Survos\BabelBundle\Contract\BabelHooksInterface;
use Survos\BabelBundle\Entity\Traits\BabelHooksTrait;

#[ORM\Entity]
#[BabelStorage] // Property-hook storage mode
class Product implements BabelHooksInterface
{
    use BabelHooksTrait;

    #[ORM\Id, ORM\GeneratedValue, ORM\Column]
    public ?int $id = null;

    #[ORM\Column(nullable: true)]
    public ?string $titleBacking = null;

    #[Translatable]
    public ?string $title {
        get => $this->resolveTranslatable('title', $this->titleBacking);
        set => $this->titleBacking = $value;
    }
}

---

Database model (important)

Babel stores translations outside your entities.

Source strings (str)

One row per unique source string + locale.

Translations (str_translation)

One row per (source, targetLocale) pair.

Your entities never store translations directly.

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Commands (opinionated subset)

Only these commands are considered current and supported:

babel:debug
babel:carriers
babel:scan
babel:stats
babel:str
babel:tr

Everything else should be treated as experimental or legacy.

See doc/commands.md for details.

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⚠️ Known broken / legacy areas (read before using)

babel:translate

babel:translate currently references obsolete field names (hash, original, locale, etc.).

It does not match the current entities:

• StrBase: code, sourceLocale, source, context, meta
• StrTranslationBase: strCode, targetLocale, engine, text, status

Until this is refactored, do not rely on babel:translate.

Use the event system instead (see docs).

Code generation

All previous code generators for Babel have been removed.

They caused more confusion than value.

Documentation now reflects manual, explicit setup only.

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Documentation

• doc/concepts.md — mental model & invariants
• doc/setup.md — manual setup only
• doc/commands.md — what still matters
• doc/examples.md — Product + event listener
• doc/troubleshooting.md — common failures

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Philosophy

Babel is intentionally:

• explicit over magical
• inspectable over clever
• boring at runtime
• powerful at scale

Once wired correctly, it disappears into the background.