Laravel app()->getLocale() inside routes always print the default "en"
Stefan Bogdanescu
Founder & Senior Architect · 2026-06-29
# Solving the Locale Paradox: Why `app()->getLocale()` Fails in Route Prefixes
As a senior developer working with Laravel, we often encounter subtle yet frustrating behaviors when mixing runtime state (like session data or middleware results) with static routing definitions. I recently ran into an issue where attempting to use `app()->getLocale()` directly as a route prefix resulted in the default locale ('en') being used, despite successfully setting the desired locale ('ar') through middleware.
This post dives deep into why this happens and explores robust, idiomatic Laravel solutions for dynamically managing locale-specific routes.
## The Mystery of the Default Locale
The core problem stems from the timing difference between when Laravel initializes its routing system and when your custom middleware successfully sets the locale.
When you define a route group using `Route::group(['prefix' => app()->getLocale(), ...])`, the router attempts to resolve that prefix *at the time the routes are being registered*. At this early stage, before all middleware has fully executed or established the request context based on session data, `app()->getLocale()` defaults to the application's configured default locale (which is typically 'en').
However, when you execute `app()->getLocale()` inside a route closure or controller method *during an actual request*, Laravel has already processed the middleware stack and established the current locale from the session. This is why your direct calls within the handler work perfectly fine—the context is correct at runtime.
This disparity highlights a common pitfall: relying on global state resolved during application bootstrapping for route definition parameters can lead to unpredictable behavior when dealing with request-scoped data like locales.
## Code Demonstration of the Conflict
Let's review the structure you presented to illustrate the conflict:
```php
// web.php example showing the issue
Route::get('locale/{locale}', function($locale) {
session()->put('userLocale', $locale);
return redirect(app()->getLocale()); // Works correctly here! Returns 'ar' if set.
});
Route::group(['prefix' => app()->getLocale(), 'middleware'