Resource routes in Laravel - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ component_behavior

intermediate

What is the HTTP method and URI for the 'edit' action in a Laravel resource route?

Given a Laravel resource route defined as Route::resource('photos', PhotoController::class);, what is the HTTP method and URI that corresponds to the 'edit' action?

A GET /photos/{photo}/edit

B POST /photos/{photo}/edit

C GET /photos/edit/{photo}

D PUT /photos/{photo}/edit

💡 Hint

The 'edit' action shows a form to edit an existing resource and uses GET.

In Laravel resource routes, the 'edit' action uses the GET method and the URI pattern is /resource/{id}/edit. So for 'photos', it is GET /photos/{photo}/edit.

📝 Syntax

intermediate

Which option correctly registers a resource route for 'posts' with only 'index' and 'show' actions?

You want to register a resource route for 'posts' but only want to include the 'index' and 'show' actions. Which code snippet is correct?

A Route::resource('posts', PostController::class)->except(['index', 'show']);

B Route::resource('posts', PostController::class)->include(['index', 'show']);

C Route::resource('posts', PostController::class)->only('index', 'show');

D Route::resource('posts', PostController::class)->only(['index', 'show']);

💡 Hint

Use the 'only' method with an array of action names.

The 'only' method accepts an array of action names to include. Option D uses the correct syntax. Option D is invalid because 'only' expects an array, not multiple arguments.

❓ state_output

advanced

What is the route name generated for the 'destroy' action in a resource route for 'users'?

If you define Route::resource('users', UserController::class);, what is the name of the route generated for the 'destroy' action?

A users.delete

B users.destroy

C users.remove

D users.destroyUser

💡 Hint

Laravel uses the resource name plus the action name for route names.

Laravel generates route names by combining the resource name and the action name separated by a dot. For 'destroy' action on 'users', the route name is 'users.destroy'.

🔧 Debug

advanced

Why does this resource route registration cause a runtime error?

Consider this code: Route::resource('products', ProductController::class)->only('index', 'show'); When running, it throws an error. What is the cause?

A ProductController must be imported with a 'use' statement.

B The resource name 'products' must be singular, not plural.

C The 'only' method requires an array, not multiple string arguments.

D The 'only' method is not available on resource routes.

💡 Hint

Check the argument type passed to 'only'.

The 'only' method expects an array of action names. Passing multiple string arguments without an array causes a runtime error.

🧠 Conceptual

expert

Which HTTP methods are included by default in a Laravel resource route?

When you define Route::resource('comments', CommentController::class);, which HTTP methods are automatically handled by the generated routes?

A GET, POST, PUT/PATCH, DELETE

B GET and POST only

C GET, POST, DELETE only

D GET, POST, PUT, PATCH, DELETE, OPTIONS

💡 Hint

Think about all CRUD operations and their HTTP verbs.

Laravel resource routes cover all CRUD operations: GET for index/show/edit/create, POST for store, PUT/PATCH for update, and DELETE for destroy.

Practice

1. What does the Route::resource('photos', PhotoController::class) method do in Laravel?

easy

A. Creates multiple routes for common CRUD actions automatically.

B. Creates a single route for the index method only.

C. Creates routes only for the create and edit methods.

D. Deletes all existing routes related to photos.

Solution

1. Step 1: Understand the purpose of Route::resource

   This method generates routes for all standard CRUD actions (index, create, store, show, edit, update, destroy) automatically.

2. Step 2: Recognize the effect on routes

   It saves time by creating multiple routes with correct HTTP verbs and URLs for the resource controller.

3. Final Answer:

   Creates multiple routes for common CRUD actions automatically. -> Option A

4. Quick Check:

   Resource routes = multiple CRUD routes [OK]

Hint: Resource routes generate all CRUD URLs in one line [OK]

Common Mistakes:

• Thinking it creates only one route
• Confusing resource with single route methods
• Assuming it deletes routes

2. Which of the following is the correct syntax to create resource routes for a controller named PostController?

easy

A. Route::resource('posts', 'PostController::class');

B. Route::resource('posts', 'PostController');

C. Route::resource('posts', PostController);

D. Route::resource('posts', PostController::class);

Solution

1. Step 1: Identify correct controller reference syntax

   In Laravel, the controller class should be passed using the ::class constant without quotes.

2. Step 2: Check each option

   Route::resource('posts', PostController::class); correctly uses PostController::class without quotes, which is the modern and recommended syntax.

3. Final Answer:

   Route::resource('posts', PostController::class); -> Option D

4. Quick Check:

   Use ControllerName::class without quotes [OK]

Hint: Use ControllerName::class without quotes for resource routes [OK]

Common Mistakes:

• Passing controller name as a string with quotes
• Omitting ::class
• Using quotes around ::class

3. Given the route definition Route::resource('books', BookController::class)->only(['index', 'show']);, which URLs will be available?

medium

A. /books/create (GET) and /books/{book}/edit (GET)

B. /books (GET) and /books/{book} (GET)

C. /books (POST) and /books/{book} (DELETE)

D. /books/{book} (PUT) and /books/{book} (PATCH)

Solution

1. Step 1: Understand the only() method

   The only() method limits resource routes to specified actions. Here, only 'index' and 'show' routes are created.

2. Step 2: Identify routes for index and show

   Index route is GET /books, show route is GET /books/{book}.

3. Final Answer:

   /books (GET) and /books/{book} (GET) -> Option B

4. Quick Check:

   only(['index','show']) = GET /books and GET /books/{id} [OK]

Hint: only(['index','show']) creates just list and detail GET routes [OK]

Common Mistakes:

• Confusing HTTP verbs for actions
• Assuming create/edit routes are included
• Mixing POST or DELETE with index/show

4. What is wrong with this route definition?

Route::resource('users', UserController::class)->except('store');

medium

A. The except() method requires an array, not a string.

B. UserController::class should be a string.

C. Resource routes cannot use except() method.

D. The route name 'users' is invalid.

Solution

1. Step 1: Check except() method usage

   The except() method expects an array of action names to exclude, not a single string.

2. Step 2: Identify correct syntax

   It should be except(['store']) with square brackets to pass an array.

3. Final Answer:

   The except() method requires an array, not a string. -> Option A

4. Quick Check:

   Use except(['action']) with array brackets [OK]

Hint: Pass array to except(), not a single string [OK]

Common Mistakes:

• Passing string instead of array to except()
• Using quotes incorrectly around controller class
• Thinking except() is not allowed

5. You want to create resource routes for ArticleController but only allow routes for creating, storing, and editing articles. Which is the correct route definition?

hard

A. Route::resource('articles', ArticleController::class)->only(['create', 'store', 'edit']);

B. Route::resource('articles', ArticleController::class)->only(['create', 'edit']);

C. Route::resource('articles', ArticleController::class)->except(['index', 'show', 'update', 'destroy']);

D. Route::resource('articles', ArticleController::class)->except(['store']);

Solution

1. Step 1: Identify required actions

   We want routes for create, store, and edit only.

2. Step 2: Use except() to exclude unwanted actions

   Excluding index, show, update, and destroy leaves only create, store, and edit routes.

3. Step 3: Confirm only() option

   Route::resource('articles', ArticleController::class)->only(['create', 'store', 'edit']); correctly includes the store route, but using except() as in Route::resource('articles', ArticleController::class)->except(['index', 'show', 'update', 'destroy']); is also correct and often preferred for excluding unwanted routes.

4. Final Answer:

   Route::resource('articles', ArticleController::class)->except(['index', 'show', 'update', 'destroy']); -> Option C

5. Quick Check:

   except(['index','show','update','destroy']) = create, store, edit routes [OK]

Hint: Use except() to exclude unwanted routes for precise control [OK]

Common Mistakes:

• Using only() but missing store route
• Excluding wrong actions
• Confusing create and store routes