First Laravel application - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ component_behavior

intermediate

What does this route return?

Consider this Laravel route defined in routes/web.php. What will the browser display when you visit /hello?

Laravel

<?php

use Illuminate\Support\Facades\Route;

Route::get('/hello', function () {
    return 'Hello, Laravel!';
});

A The text 'Hello, Laravel!'

B A blank page

C A JSON object with key 'message' and value 'Hello, Laravel!'

D A 404 Not Found error

💡 Hint

Look at what the route's closure returns directly.

The route returns a plain string, so the browser will display that text exactly.

📝 Syntax

intermediate

Identify the syntax error in this controller method

Look at this Laravel controller method. Which option correctly identifies the syntax error?

Laravel

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class WelcomeController extends Controller
{
    public function index()
    {
        return view('welcome');
    }
}

A Wrong namespace declaration

B Missing parentheses in method declaration

C Incorrect use statement for Request

D Missing semicolon after return statement

💡 Hint

Check the end of the return statement line.

In PHP, each statement must end with a semicolon. The return statement is missing it.

❓ state_output

advanced

What is the output of this Blade template?

Given this Blade template resources/views/greeting.blade.php, what will be rendered in the browser?

Laravel

@php
    $name = 'Alice';
@endphp

<h1>Hello, {{ $name }}!</h1>
@if(strlen($name) > 3)
    <p>Welcome to Laravel.</p>
@endif

A <h1>Hello, {{ $name }}!</h1><p>Welcome to Laravel.</p>

B <h1>Hello, Alice!</h1>

C <h1>Hello, Alice!</h1><p>Welcome to Laravel.</p>

D Syntax error in Blade template

💡 Hint

Check how Blade outputs variables and evaluates conditions.

Blade replaces {{ $name }} with 'Alice' and includes the paragraph because the name length is greater than 3.

🔧 Debug

advanced

Why does this route cause a 500 error?

This route causes a server error when accessed. What is the cause?

Laravel

<?php

use Illuminate\Support\Facades\Route;

Route::get('/user/{id}', function ($id) {
    $user = User::find($id);
    return view('user.profile', ['user' => $user]);
});

A The view file 'user.profile' does not exist

B The User model is not imported or defined

C The route URL is missing a trailing slash

D The route method should be post, not get

💡 Hint

Check if all classes used are properly imported.

The code uses User::find but does not import the User model, causing a class not found error.

🧠 Conceptual

expert

What happens when you run this Artisan command?

You run php artisan make:controller ProductController --resource. What does this command do?

A Creates a controller with methods for all RESTful actions

B Creates a controller with only an index method

C Creates a model named ProductController

D Deletes the existing ProductController if it exists

💡 Hint

Think about what the --resource flag means in Laravel controllers.

The --resource flag generates a controller with methods like index, create, store, show, edit, update, and destroy.