Adaface Sample Laravel Questions

You are developing a Laravel application that has a PostController for managing blog posts. The routes for this controller are set up as a resource route in your web.php file:

You have already created a middleware called EnsureAdminRole to restrict access to certain routes for admin users. Now, you want to apply this middleware to the create, edit, update, and delete routes for the PostController, but not the index or show routes.
            
            Which of the following ways would correctly apply the EnsureAdminRole middleware to these routes?

In your Laravel application, you are implementing a registration form where users enter their birthdate as a string in the 'Y-m-d' format. You want to ensure that only users aged 18 years or older can register. To achieve this, you decide to write a custom validation rule. Consider the following implementation of the custom rule and a function to handle the registration request:

Which of the following code snippets correctly fills the passes method in the AgeRestriction class to ensure that only users aged 18 or older can register, given that the birthdate is a string in the 'Y-m-d' format?

Consider the following code snippet in a Laravel application:

Assume the user 'John Doe' is the first user in the User table. You want to retrieve all comments belonging to a post made by this user ('John Doe'). Which of the following Eloquent expressions is the correct way to achieve this?

In your Laravel application, you're making use of route model binding to handle retrieving models based on the incoming request. You have a route defined as follows:

In your PostController, the show method looks like this:

Now, imagine that instead of using the ID, you want to retrieve posts by their 'slug' for SEO purposes. Which of the following changes should you make in order to achieve this?

A: Modify the route to Route::get('/posts/{slug}', 'PostController@show'); and change the show method to public function show($slug).
            B: Modify the getRouteKeyName method in the Post model to return 'slug'.
            C: Change the show method to public function show(Post $slug).
            D: No changes are needed, Laravel will automatically use the 'slug' if it exists.

In a Laravel application, the Service Container is a powerful tool for managing class dependencies and performing dependency injection. You're building a payment feature and created an interface PaymentGatewayInterface and two concrete classes, StripePaymentGateway and PaypalPaymentGateway, which implement this interface.
            
            The application should use StripePaymentGateway for users located in the US, and PaypalPaymentGateway for users located in Europe.
            
            Which of the following approach would you use to register these bindings in the Service Container?

A: Use App::bind(PaymentGatewayInterface::class, StripePaymentGateway::class) for US users and App::bind(PaymentGatewayInterface::class, PaypalPaymentGateway::class) for European users.
            
            B: Use App::singleton(PaymentGatewayInterface::class, StripePaymentGateway::class) for US users and App::singleton(PaymentGatewayInterface::class, PaypalPaymentGateway::class) for European users.
            
            C: Use a conditional statement within the binding closure of App::bind to check the user's location and bind the appropriate concrete class.
            
            D: Use App::instance(PaymentGatewayInterface::class, new StripePaymentGateway) for US users and App::instance(PaymentGatewayInterface::class, new PaypalPaymentGateway) for European users.
            
            E: Use App::when('App\\Http\\Controllers\\PaymentController')->needs(PaymentGatewayInterface::class)->give(StripePaymentGateway::class) for US users and the same method with PaypalPaymentGateway::class for European users.