Route groups in Laravel - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to start a route group with the prefix 'admin'.

Laravel

Route::[1](['prefix' => 'admin'], function () {
    // routes here
});

Drag options to blanks, or click blank then click option'

Amiddleware

Bprefix

Cgroup

Dresource

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'prefix' instead of 'group' causes syntax errors.

Using 'middleware' or 'resource' does not create a route group.

The group method starts a route group with shared attributes like prefix.

2fill in blank

medium

Complete the code to add a middleware 'auth' to a route group.

Laravel

Route::group(['middleware' => [1]], function () {
    // protected routes
});

Drag options to blanks, or click blank then click option'

A'auth'

B'web'

C'api'

D'guest'

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'guest' allows only guests, not authenticated users.

Using 'web' or 'api' are middleware groups, not specific auth.

The 'auth' middleware protects routes by requiring user authentication.

3fill in blank

hard

Fix the error in the route group to correctly set both prefix and middleware.

Laravel

Route::group([1], function () {
    // routes
});

Drag options to blanks, or click blank then click option'

A['prefix' => 'dashboard', 'middleware' => 'auth']

B['prefix' => dashboard, 'middleware' => auth]

C['prefix' => 'dashboard', 'middleware' => ['auth']]

D['prefix' => 'dashboard', middleware => 'auth']

Attempts:

3 left

💡 Hint

Common Mistakes

Missing quotes around keys or values causes syntax errors.

Using array for middleware is valid but not required here.

The array keys and string values must be quoted correctly for PHP syntax.

4fill in blank

hard

Fill both blanks to create a route group with prefix 'api' and middleware 'auth:api'.

Laravel

Route::group(['[1]' => 'api', '[2]' => 'auth:api'], function () {
    // api routes
});

Drag options to blanks, or click blank then click option'

Aprefix

Bmiddleware

Cguard

Dnamespace

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'guard' or 'namespace' keys instead of 'prefix' or 'middleware'.

Swapping the keys causes unexpected behavior.

The 'prefix' key sets the URL prefix, and 'middleware' applies the auth guard.

5fill in blank

hard

Fill all three blanks to create a route group with prefix 'admin', middleware 'auth', and namespace 'Admin'.

Laravel

Route::group(['[1]' => 'admin', '[2]' => 'auth', '[3]' => 'Admin'], function () {
    // admin routes
});

Drag options to blanks, or click blank then click option'

Aprefix

Bmiddleware

Cnamespace

Ddomain

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'domain' instead of 'namespace' for controller grouping.

Mixing up the order of keys.

The keys 'prefix', 'middleware', and 'namespace' set URL prefix, middleware, and controller namespace respectively.

Practice

1. What is the main purpose of using Route::group() in Laravel?

easy

A. To register routes only for API requests

B. To define a single route with multiple HTTP methods

C. To create a route that redirects to another URL

D. To apply shared settings like middleware or prefixes to multiple routes at once

Solution

1. Step 1: Understand Route Group Purpose

   Route groups allow you to bundle routes that share common attributes like middleware or URL prefixes.

2. Step 2: Compare with Other Options

   Options A, B, and C describe different routing features, not the grouping concept.

3. Final Answer:

   To apply shared settings like middleware or prefixes to multiple routes at once -> Option D

4. Quick Check:

   Route groups = shared settings [OK]

Hint: Route groups bundle routes with common settings fast [OK]

Common Mistakes:

• Thinking route groups define single routes
• Confusing route groups with route redirects
• Assuming route groups are only for API routes

2. Which of the following is the correct syntax to create a route group with a prefix admin in Laravel?

easy

A. Route::group('prefix' => 'admin', function () { /* routes */ });

B. Route::group(['prefix' => 'admin'], function () { /* routes */ });

C. Route::group(['admin' => 'prefix'], function () { /* routes */ });

D. Route::group(function () { prefix('admin'); /* routes */ });

Solution

1. Step 1: Recall Route Group Syntax

   Route groups use an array of attributes as the first argument, e.g., ['prefix' => 'admin'].

2. Step 2: Identify Correct Array Syntax

   Route::group(['prefix' => 'admin'], function () { /* routes */ }); correctly uses the array with 'prefix' key and a closure function.

3. Final Answer:

   Route::group(['prefix' => 'admin'], function () { /* routes */ }); -> Option B

4. Quick Check:

   Array with 'prefix' key = correct syntax [OK]

Hint: Use array with 'prefix' key inside Route::group [OK]

Common Mistakes:

• Missing array brackets around attributes
• Swapping key and value in array
• Trying to call prefix() inside the closure

3. Given the following route group code, what URL will respond to the Route::get('dashboard', ...) route?

Route::group(['prefix' => 'admin'], function () {
    Route::get('dashboard', function () {
        return 'Admin Dashboard';
    });
});

medium

A. /admin/dashboard

B. /admin

C. /dashboard

D. /dashboard/admin

Solution

1. Step 1: Understand Prefix Effect

   The 'prefix' => 'admin' adds '/admin' before all routes inside the group.

2. Step 2: Combine Prefix and Route URI

   The route URI is 'dashboard', so combined URL is '/admin/dashboard'.

3. Final Answer:

   /admin/dashboard -> Option A

4. Quick Check:

   Prefix + route URI = /admin/dashboard [OK]

Hint: Prefix adds before route URI in URL [OK]

Common Mistakes:

• Ignoring the prefix and using only route URI
• Appending prefix after route URI
• Confusing route name with URL

4. Identify the error in this route group code:

Route::group(['middleware' => 'auth'], function {
    Route::get('profile', function () {
        return 'User Profile';
    });
});

medium

A. Missing parentheses after function keyword

B. Middleware should be an array, not a string

C. Route::group cannot use middleware

D. Route URI 'profile' is invalid

Solution

1. Step 1: Check Closure Syntax

   The anonymous function must have parentheses: function() { ... }.

2. Step 2: Validate Middleware Usage

   Middleware can be a string or array, so that is correct here.

3. Final Answer:

   Missing parentheses after function keyword -> Option A

4. Quick Check:

   Anonymous function needs () after function [OK]

Hint: Always add () after function keyword for closures [OK]

Common Mistakes:

• Omitting parentheses in anonymous functions
• Thinking middleware must be array always
• Assuming route URI 'profile' is invalid

5. You want to create a route group with prefix api and middleware auth:api. Inside it, you define a route GET /users that returns a JSON list of users. Which is the correct way to write this in Laravel?

hard

A. Route::middleware('auth:api')->group(['prefix' => 'api'], function () {
Route::get('users', function () {
return response()->json(['users' => []]);
});
});

B. Route::group(['prefix' => 'api'], function () {
Route::middleware('auth:api')->get('users', function () {
return ['users' => []];
});
});

C. Route::group(['prefix' => 'api', 'middleware' => 'auth:api'], function () {
Route::get('users', function () {
return response()->json(['users' => []]);
});
});

D. Route::group(['middleware' => 'auth:api'], function () {
Route::prefix('api')->get('users', function () {
return response()->json(['users' => []]);
});
});

Solution

1. Step 1: Combine Prefix and Middleware in One Group

   Route::group(['prefix' => 'api', 'middleware' => 'auth:api'], function () { Route::get('users', function () { return response()->json(['users' => []]); }); }); correctly passes both 'prefix' and 'middleware' as keys in the attributes array.

2. Step 2: Check Route Definition Inside Group

   The route uses Route::get with URI 'users' and returns JSON response properly.

3. Step 3: Verify Other Options

   Route::group(['prefix' => 'api'], function () { Route::middleware('auth:api')->get('users', function () { return ['users' => []]; }); }); applies middleware only to the route, not the group prefix. Route::middleware('auth:api')->group(['prefix' => 'api'], function () { Route::get('users', function () { return response()->json(['users' => []]); }); }); has wrong group syntax. Route::group(['middleware' => 'auth:api'], function () { Route::prefix('api')->get('users', function () { return response()->json(['users' => []]); }); }); misuses prefix inside the route.

4. Final Answer:

   Route::group(['prefix' => 'api', 'middleware' => 'auth:api'], function () { Route::get('users', function () { return response()->json(['users' => []]); }); }); -> Option C

5. Quick Check:

   Group attributes array with prefix and middleware [OK]

Hint: Put prefix and middleware together in group attributes array [OK]

Common Mistakes:

• Splitting prefix and middleware into separate calls incorrectly
• Misplacing prefix() inside route closure
• Using middleware() outside group incorrectly