Laravel method for database driven localization

helpers.php

<?php
function t($string) {
    if(count(config('app.locales'))==1) return $string;
    return \Cache::remember(md5($string.config('app.locale')), 24*60, function() use ($string){
        $all_translations = config('app.translations');
        $translated = $all_translations->where('hash', md5($string.config('app.locale')))->first();
        if(!$translated){
            $translated = App\Models\Translations::firstOrCreate([
                'string' => $string,
                'hash' => md5($string.config('app.locale')),
                'value' => '',
                'lang' => config('app.locale')
            ]);
        }
        if($translated->value) return $translated->value;
        return $string;
    });
}

migration_file.php

<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;

class CreateTranslationsTable extends Migration {

	public function up()
	{
		Schema::create('translations', function(Blueprint $table) {
			$table->increments('id');
			$table->text('string');
            $table->string('hash', 100)->unique()->index();
			$table->text('value')->nullable();
			$table->string('lang', 2)->index();
		});
	}

	public function down()
	{
		Schema::drop('translations');
	}
}

routes.php

<?php
$locale = Request::segment(1);
if(in_array($locale, config('app.locales'))){
    config(['app.locale' => $locale]);
}else{
    config(['app.locale' => 'bg']);
    $locale = '';
}
Route::group([
    'prefix' => $locale
], function(){
});

Translations_model.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;



class Translations extends Model {

	protected $table = 'translations';
	public $timestamps = false;
    protected $primaryKey = 'id';
    protected $unique = 'hash';
    protected $guarded = ['id'];

}