Laravel Auto Translate Laravel Package

Getting Started

1. Install the package with Composer and publish its config if the service provider exposes one:

   composer require <vendor>/<package>
   php artisan vendor:publish --tag=<package>-config
   

2. Configure the MyMemory driver in config/<package>.php or the relevant environment variables. Set a contact email if the driver supports it — MyMemory grants a larger anonymous quota when a valid email is supplied.
3. Look first at the package’s config file and service-provider bindings. That is where the translation driver, HTTP client, cache, and chunking behaviour are wired up.
4. First use case: translate a single short string from a controller, artisan command, or job:

   $translated = app(Translator::class)->translate('Hello world', 'en', 'fr');
   

   Then move the same call into a queued job before translating anything in bulk.

Implementation Patterns

• Wrap the package in your own translation service. Bind a small application-level class around the package’s translator. That keeps driver details, locale mapping, and retry logic out of controllers and models.
• Queue bulk translation. Translation calls are external HTTP requests. Dispatch one job per document, paragraph, or locale pair, and use Laravel’s queue retry/backoff rather than translating synchronously in a request.
• Pre-chunk long content at sentence or paragraph boundaries. Version 1.1.1 fixes the failure case where a single sentence exceeds MyMemory’s 450-byte request limit by splitting on words. That prevents exceptions, but splitting at natural sentence boundaries still produces better translations and avoids isolated word fragments.
• Cache translated strings. Use Cache::remember() keyed by source text hash, source locale, target locale, and driver. This reduces quota usage and makes repeated page renders cheap.
• Persist translations separately from source content. Store translations in a translations table or generated lang/ files. Do not overwrite the source column; keep both so you can re-run translation after source edits.
• Integrate with model accessors or dedicated translation methods. For example, translate on model save via an observer that dispatches a job, then expose the translated value through an accessor with a fallback to the source locale.
• Use Laravel’s HTTP client fakes in tests. Assert that long sentences are chunked and that requests stay under the byte limit. Test with multibyte source text, not only ASCII.
• Respect locale and driver configuration. Keep source/target locale mapping in one place; MyMemory language codes may not match your application’s locale keys.

Gotchas and Tips

• The 450-byte limit is bytes, not characters. Use strlen() when checking payload size, not mb_strlen(). Accented characters, CJK text, and emoji consume multiple bytes and can push a short-looking sentence over the limit.
• The 1.1.1 fix is a patch-level behaviour change, not a breaking change. It replaces a hard failure with word-boundary splitting. Upgrade is safe, but review any code that relied on an exception being thrown for oversized input.
• The fix handles a single over-limit sentence, but not translation quality. A long sentence split mid-thought may produce awkward target text. Pre-split at punctuation where possible.
• Watch MyMemory quotas and rate limits. Anonymous usage is limited; configure a contact email and add application-level throttling. Handle HTTP 429 and 5xx responses with retries and backoff.
• Do not translate inside loops without batching. Each call is an HTTP round trip. Group short strings where the driver supports it, or dispatch jobs in parallel with a queue worker pool.
• Beware of config caching. After changing driver credentials, run php artisan config:clear. Stale cached config is a common cause of “why is it still using the old key?” debugging sessions.
• Log request size and response status when debugging. A small custom middleware or wrapper around the package’s HTTP client makes byte-limit and quota issues visible. Log strlen($payload) alongside the source locale and target locale.
• Use the package’s extension points rather than forking. If the driver or chunker is bound in the container, override it in a service provider. Prefer a custom driver implementation or a decorator around the translator over editing vendor code.
• Test the boundary case explicitly. Include a unit test with a single sentence just under 450 bytes, one just over, and one containing multibyte characters. That guards against regressions in future patch releases.