Components and slots in Laravel - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a Blade component in Laravel?

A Blade component is a reusable piece of UI in Laravel that you can include in your views to keep your code clean and organized.

beginner

What is the purpose of slots in Laravel Blade components?

Slots allow you to pass content from a parent view into a component, making components flexible and customizable.

beginner

How do you define a default slot in a Laravel Blade component?

You use {{ $slot }} inside the component's Blade file to display the default slot content passed from the parent.

intermediate

How can you create a named slot in Laravel Blade components?

You define a named slot in the component using @isset($slotName) and in the parent view you pass content using ....

beginner

Why use components and slots instead of repeating HTML in Laravel views?

Components and slots help avoid repeating code, make views easier to read, and allow you to update UI in one place instead of many.

What Blade directive is used to include a component in a Laravel view?

A <x-component-name>

B @component('component-name')

C @include('component-name')

D @slot('component-name')

You include components using the syntax in Blade.

How do you display the default slot content inside a Blade component?

A {{ $slot }}

B @yield('slot')

C @slot('default')

D {{ $content }}

The default slot content is accessed using {{ $slot }} inside the component.

Which syntax passes content to a named slot called 'header'?

A {{ slot('header') }}

B @slot('header') Content @endslot

C @section('header') Content @endsection

D <x-slot name="header">Content</x-slot>

Named slots are passed using Content inside the component tag.

What is a benefit of using Blade components with slots?

A They make your PHP code run faster.

B They automatically generate database migrations.

C They allow reusing UI parts with flexible content.

D They replace the need for controllers.

Components with slots let you reuse UI parts and customize content easily.

Where do you define the HTML structure of a Blade component?

A In a controller file.

B In a Blade view file inside resources/views/components.

C In the routes/web.php file.

D In the .env configuration file.

Blade components are defined as Blade files inside resources/views/components.

Explain how you create and use a simple Blade component with a default slot in Laravel.

Think about how you pass content between views and components.

Describe the difference between default slots and named slots in Laravel Blade components.

Consider how you pass different parts of content to a component.

Practice

1. What is the main purpose of using components in Laravel Blade?

easy

A. To define routes for the application

B. To write raw PHP code inside Blade templates

C. To create reusable pieces of UI that can be included in multiple views

D. To connect Laravel with external databases

Solution

1. Step 1: Understand what components do

   Components in Laravel Blade are designed to hold reusable UI parts, like buttons or cards, so you don't repeat code.

2. Step 2: Compare options with component purpose

   Only To create reusable pieces of UI that can be included in multiple views describes reusable UI pieces. Other options describe unrelated tasks.

3. Final Answer:

   To create reusable pieces of UI that can be included in multiple views -> Option C

4. Quick Check:

   Components = reusable UI [OK]

Hint: Components = reusable UI blocks in Blade templates [OK]

Common Mistakes:

• Confusing components with routing or database tasks
• Thinking components are for PHP logic only
• Assuming components are only for styling

2. Which of the following is the correct syntax to pass a slot named header to a Laravel Blade component called card?

easy

A. Title

B. Title

C.

D. Title

Solution

1. Step 1: Recall named slot syntax in Blade

   Named slots use <x-slot name="slotName">...</x-slot> inside the component tags.

2. Step 2: Match syntax with options

   <x-card><x-slot name="header">Title</x-slot></x-card> correctly uses <x-slot name="header">. Others misuse slot attribute or tag.

3. Final Answer:

   <x-card><x-slot name="header">Title</x-slot></x-card> -> Option A

4. Quick Check:

   Named slot syntax = <x-slot name="name"> [OK]

Hint: Use for named slots inside components [OK]

Common Mistakes:

• Using slot attribute instead of tag
• Confusing slot with regular HTML <slot> tag
• Passing slot content as a component attribute

3. Given this Blade component usage:

<x-alert>
  <x-slot name="title">Warning</x-slot>
  This is an alert message.
</x-alert>

And the component template:

<div class="alert">
  <h4>{{ $title }}</h4>
  <p>{{ $slot }}</p>
</div>

What will be the rendered HTML output?

medium

A. WarningThis is an alert message.

B. Warning This is an alert message.

C. titleThis is an alert message.

D. Warning

Solution

1. Step 1: Understand slot and named slot usage

   The $title variable receives content from the named slot title. The default $slot holds the inner content outside named slots.

2. Step 2: Match passed content to template placeholders

   The title slot is "Warning", and the default slot is "This is an alert message." so they fill <h4> and <p> respectively.

3. Final Answer:

   <div class="alert"><h4>Warning</h4><p>This is an alert message.</p></div> -> Option A

4. Quick Check:

   Named slot fills $title, default slot fills $slot [OK]

Hint: Named slots fill variables, default slot fills $slot content [OK]

Common Mistakes:

• Confusing default slot with named slot content
• Expecting named slot content inside $slot variable
• Ignoring that $title is set by named slot

4. Identify the error in this Blade component usage:

<x-modal>
  <x-slot name="footer">Close</x-slot>
  <x-slot>Content here</x-slot>
</x-modal>

What is the problem?

medium

A. Named slots cannot be used inside components

B. The slot name "footer" is reserved and cannot be used

C. Slots must be self-closing tags

D. The unnamed slot is incorrectly declared with <x-slot> instead of using default slot syntax

Solution

1. Step 1: Check unnamed slot syntax

   The default slot content should be placed directly inside the component tags, not wrapped in <x-slot> without a name.

2. Step 2: Understand correct default slot usage

   Using <x-slot> without a name is invalid. Default slot content is just plain content inside the component.

3. Final Answer:

   The unnamed slot is incorrectly declared with <x-slot> instead of using default slot syntax -> Option D

4. Quick Check:

   Default slot = direct content, not tag [OK]

Hint: Default slot is plain content, not wrapped in [OK]

Common Mistakes:

• Wrapping default slot content in without name
• Thinking all slots must be named
• Believing slots must be self-closing

5. You want to create a reusable profile-card component that accepts a header slot for the user's name, a default slot for the bio, and a footer slot for action buttons. Which Blade component template correctly supports these slots?

hard

A.
{{ $slot }}
{{ $header }}
{{ $footer }}

B.
{{ $header }}
{{ $slot }}
{{ $footer }}

C.
{{ $header }}
{{ $footer }}
{{ $slot }}

D.
{{ $footer }}
{{ $slot }}
{{ $header }}

Solution

1. Step 1: Match slots to variables

   The named slots header and footer correspond to $header and $footer. The default slot content is in $slot.

2. Step 2: Verify correct placement in template

   <div class="profile-card"> <header>{{ $header }}</header> <section>{{ $slot }}</section> <footer>{{ $footer }}</footer> </div> places $header in <header>, $slot in <section>, and $footer in <footer>, matching the requirement.

3. Final Answer:

   <div class="profile-card"> <header>{{ $header }}</header> <section>{{ $slot }}</section> <footer>{{ $footer }}</footer> </div> -> Option B

4. Quick Check:

   Named slots = $header/$footer, default slot = $slot [OK]

Hint: Named slots = variables, default slot = $slot in template [OK]

Common Mistakes:

• Mixing up slot variable names and their placement
• Using $slot for named slots
• Placing slots in wrong HTML sections