Laravel 5.4: How to DO NOT use route parameter in controller

问题

I am developing a Multilingual application and trying to make a middleware to pass route {locale} prefix to URL. But now I do not need to use this {locale} parameter in controller, for example:

public function getPost(App\Post $post)
{
    return view('welcome')->withPost($post);
}

But the code above does not work unless I change the App\Post $post to $locale, App\Post $post.

The problem is because I'll need to pass the $locale parameter whenever I create a new controller. That is not cool.

How to avoid passing $locale parameter to all controllers? I do not need it because I already used it on my middleware.

UPDATE:

routes\web.php

Route::prefix('{locale}')->middleware('locale')->group(function () {     

    Route::get('/', 'PageController@getHome')->name('welcome');
    Auth::routes();
    Route::get('/home', 'HomeController@index')->name('home');

    ...

    // This route must be the last!
    Route::get('/{post}', 'PageController@getPost')->name('post');
});

回答1:

There is a forgetParameter()-method in Laravel's route class, that can remove a parameter from being parsed to controller methods.

It can be used e.g. in a middleware, by calling it like so:

$request->route()->forgetParameter('locale');

Then the parameter will be removed from the controller dispatcher's parameter property and thereby not get parsed on to the controller methods as parameter.

回答2:

I solved my question without using a prefix parameter, but using a custom helper function.

By this way, I do not need a middleware to parse the {locale} prefix parameter anymore. See my custom helper function to parse locale from URL:

function parseLocale()
{
    $locale = Request::segment(1);
    $languages = ['pt', 'it', 'fr', 'ru', 'es'];

    if (in_array($locale, $languages)) {
        App::setLocale($locale);
        return $locale;
    }

    return '/';
}

Now I need just to use it on my Route::prefix() like following:

Route::prefix(parseLocale())->group(function () {
    Auth::routes();
    Route::get('home', 'HomeController@index')->name('home');
    Route::get('/', 'PageController@getHome')->name('welcome');
    ...

As you can see, if you try to navigate into www.site.com/pt/something the application will give you the something route the same way you try to navigate into www.site.com/something. But without the locale prefix the Laravel will load the default language you've set in config\app.php.

Thank you guys!

回答3:

Remove {locale} from your route parameters if it is not needed. It sounds like you still have the routes defined with it in there. Please post your routes/web.php so we can verify.

If your route is defined like:

Route::get('/{locale}/{post}', 'PostController@getPost');

Laravel will expect 2 parameters and bind whatever is in place for the first one. So for example, '/some-post' would bind 'some-post' to {locale} and still expect another route parameter for {post}

来源：https://stackoverflow.com/questions/44619512/laravel-5-4-how-to-do-not-use-route-parameter-in-controller

标签

laravel

laravel-5.4