How to Set Default Language In Laravel?

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To set the default language in Laravel, you can do so by opening the config/app.php file in your Laravel project. Inside the file, look for the 'locale' key and set its value to the desired default language code. This will define the default language for your application. Additionally, you can also set the fallback language in case the translation for a specific language is not available. This can be done in the same config/app.php file by setting the 'fallback_locale' key to the desired fallback language code. By defining these values in the configuration file, Laravel will use the specified default language throughout the application.


What is the purpose of setting the default language in Laravel?

Setting the default language in Laravel allows the application to provide language-specific content and localization for the users. This means that the application can display content in the user's preferred language, making the user experience more personalized and user-friendly. Additionally, by setting the default language, developers can easily switch between languages for different regions or users without having to manually set the language for each request.


How to switch between languages in Laravel?

In Laravel, you can easily switch between languages by using localization features provided by the framework. Here's how you can switch between languages in Laravel:

  1. First, you need to create language files for each language you want to support. These language files should be stored in the resources/lang directory in your Laravel project.
  2. Open the config/app.php file in your Laravel project and set the default application locale to the language you want to use as the default. You can do this by setting the 'locale' key to the desired language code.
  3. To switch between languages in your views or controllers, use the trans() helper function provided by Laravel. This function takes the key of the language string as its parameter and returns the corresponding translation based on the current application locale.
  4. To change the application locale dynamically within your application, you can use the setLocale() method provided by the App facade. You can set the desired language code as the parameter to this method to change the application locale.


Here's an example of how you can switch between languages in a Laravel controller:

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use Illuminate\Support\Facades\App;

public function switchLanguage($language)
{
    App::setLocale($language);
    
    // Redirect back to the previous page or to a specific route
    return back();
}


By following these steps, you can easily switch between languages in your Laravel application. Remember to create language files for each supported language and use the trans() helper function to display translated strings in your views.


How to set up language fallbacks in Laravel?

In Laravel, you can set up language fallbacks by configuring the fallback_locale in the config/app.php file. Here's how you can do it:

  1. Open the config/app.php file in your Laravel project.
  2. Find the fallback_locale key in the app configuration array.
  3. Set the fallback_locale value to the language code you want to use as a fallback when a translation is not available for the current language.


For example, if you want to set English (en) as the fallback language, your configuration should look like this:

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'fallback_locale' => 'en',


  1. Save the changes to the config/app.php file.


Now, when Laravel is unable to find a translation for the current language, it will automatically fallback to the specified language code.


You can also set up language fallbacks on a per-translation basis by using the __() function with a second parameter specifying the fallback language. For example:

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__('messages.welcome', [], 'en') // Fallback to English if translation is missing



How to set the default language in Laravel middleware?

To set the default language in Laravel middleware, you can create a custom middleware that checks the user's language preference and sets it as the default language for the application. Here's an example of how you can achieve this:

  1. Create a new middleware by running the following command in your terminal:
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php artisan make:middleware SetDefaultLanguage


  1. Open the created middleware file located at app/Http/Middleware/SetDefaultLanguage.php and add the following code:
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<?php

namespace App\Http\Middleware;

use Closure;
use Illuminate\Support\Facades\App;
use Illuminate\Support\Facades\Session;

class SetDefaultLanguage
{
    public function handle($request, Closure $next)
    {
        // Check if the user has a language preference stored in the session
        $language = Session::get('language');

        // If a language preference is found, set it as the default language
        if ($language) {
            App::setLocale($language);
        }

        return $next($request);
    }
}


  1. Register the middleware in the $routeMiddleware array in your app/Http/Kernel.php file:
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protected $routeMiddleware = [
    // Other middleware entries...
    'setDefaultLanguage' => \App\Http\Middleware\SetDefaultLanguage::class,
];


  1. Apply the middleware to the routes that you want to set the default language for. You can do this in your routes file or controller by using the middleware method:
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Route::get('/your-route', 'YourController@yourMethod')->middleware('setDefaultLanguage');


Now, whenever a user visits a route that uses the setDefaultLanguage middleware, it will check if the user has a language preference stored in the session and set it as the default language for the application.

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