Blade directives in Laravel - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ component_behavior

intermediate

What is the output of this Blade snippet?

Consider this Blade template code:

@if($user->isAdmin())
  
Admin Access
@else
  
User Access
@endif

If $user->isAdmin() returns false, what will be rendered?

Laravel

@if($user->isAdmin())
  <p>Admin Access</p>
@else
  <p>User Access</p>
@endif

A <p>Admin Access</p>

B <p>User Access</p>

C No output

D Syntax error

💡 Hint

Think about what the @else directive does when the condition is false.

The @if directive checks the condition. Since $user->isAdmin() is false, the @else block runs, rendering

User Access

.

📝 Syntax

intermediate

Which Blade directive correctly loops over an array?

You want to loop over $items in Blade. Which option uses the correct directive syntax?

A

@foreach($items as $item)
  {{ $item }}
@endforeach

B

@loop($items as $item)
  {{ $item }}
@endloop

C

@for($items as $item)
  {{ $item }}
@endfor

D

@repeat($items as $item)
  {{ $item }}
@endrepeat

💡 Hint

Blade uses a directive named after a common PHP loop for arrays.

The correct directive to loop over arrays in Blade is @foreach. The others are invalid Blade directives.

🔧 Debug

advanced

What error does this Blade code cause?

Given this Blade snippet:

@if($count > 0)
  
Count is positive
@else
  
No count
@endif

What error will occur when rendering?

Laravel

@if($count > 0)
  <p>Count is positive</p>
@else
  <p>No count</p>
@endif

A Runtime error: Undefined variable $count

B Renders both paragraphs

C No output

D Syntax error: Unexpected @else without matching @if

💡 Hint

Check the placement of @else relative to @endif.

The @else directive must be inside the @if block before @endif. Here, @else is after @endif, causing a syntax error.

❓ state_output

advanced

What is the output of this Blade component with @isset?

Given $title = null; and this Blade code:

@isset($title)
  
{{ $title }}
@else
  
Default Title
@endisset

What will be rendered?

Laravel

@isset($title)
  <h1>{{ $title }}</h1>
@else
  <h1>Default Title</h1>
@endisset

A <h1>Default Title</h1>

B <h1></h1>

C No output

D <h1>null</h1>

💡 Hint

Remember what @isset checks for in Blade.

@isset checks if the variable is set and not null. Since $title is null, the @else block runs.

🧠 Conceptual

expert

Which Blade directive is used to include a child view and pass data?

You want to include a Blade view named header and pass ['title' => 'Welcome'] to it. Which directive and syntax is correct?

A @extends('header', ['title' => 'Welcome'])

B @component('header', ['title' => 'Welcome']) @endcomponent

C @include('header', ['title' => 'Welcome'])

D @yield('header', ['title' => 'Welcome'])

💡 Hint

Think about the directive that inserts a view and allows passing variables.

@include inserts a child view and can pass data as an array. @component is for components, @yield is for sections, and @extends is for layout inheritance.

Practice

1. Which Blade directive is used to display a variable safely escaped in a Laravel view?

easy

A. @foreach($variable as $item)

B. @php $variable @endphp

C. {{ $variable }}

D. @if($variable)

Solution

1. Step 1: Understand Blade variable display

   Blade uses double curly braces {{ }} to safely display variables with HTML escaping.

2. Step 2: Identify correct directive for safe output

   The {{ $variable }} syntax outputs the variable safely, preventing XSS attacks.

3. Final Answer:

   {{ $variable }} -> Option C

4. Quick Check:

   Safe variable display = {{ $variable }} [OK]

Hint: Use double curly braces {{ }} for safe variable output [OK]

Common Mistakes:

• Using @php for output instead of {{ }}
• Confusing @if with variable display
• Using @foreach for single variable output

2. Which of the following is the correct syntax to start a Blade loop over an array $items?

easy

A. @loop($items as $item)

B. @for($items as $item)

C. @while($items as $item)

D. @foreach($items as $item)

Solution

1. Step 1: Recall Blade loop directives

   Blade uses @foreach to loop over arrays or collections.

2. Step 2: Match correct syntax

   The correct syntax is @foreach($items as $item), which loops through each item.

3. Final Answer:

   @foreach($items as $item) -> Option D

4. Quick Check:

   Loop over array = @foreach [OK]

Hint: Use @foreach for looping arrays in Blade [OK]

Common Mistakes:

• Using @loop which does not exist
• Using @for incorrectly for arrays
• Using @while for array loops

3. What will be the output of this Blade snippet if $count = 3?

@if($count > 5)
  Large
@elseif($count > 1)
  Medium
@else
  Small
@endif

medium

A. Large

B. Medium

C. Small

D. No output

Solution

1. Step 1: Evaluate the condition $count > 5

   Since $count = 3, 3 > 5 is false, so skip the first block.

2. Step 2: Evaluate the @elseif($count > 1) condition

   3 > 1 is true, so Blade outputs "Medium" and skips the @else.

3. Final Answer:

   Medium -> Option B

4. Quick Check:

   3 > 1 but not > 5 = Medium [OK]

Hint: Check conditions top to bottom; first true block runs [OK]

Common Mistakes:

• Choosing Large because 3 is close to 5
• Ignoring @elseif and picking @else
• Thinking all blocks output

4. Identify the error in this Blade snippet:

@foreach($users as $user)
  
{{ $user->name }}
@endforeach
@endfor

medium

A. Incorrect closing directive @endfor instead of @endforeach

B. Missing closing @endforeach directive

C. Incorrect variable name $user instead of $users

D. Missing opening @for directive

Solution

1. Step 1: Check loop opening and closing directives

   The loop starts with @foreach but incorrectly ends with @endfor.

2. Step 2: Match correct closing directive

   Blade requires @endforeach to close a @foreach loop, so @endfor is invalid here.

3. Final Answer:

   Incorrect closing directive @endfor instead of @endforeach -> Option A

4. Quick Check:

   Match @foreach with @endforeach [OK]

Hint: Close @foreach with @endforeach, not @endfor [OK]

Common Mistakes:

• Using @endfor to close @foreach
• Confusing $user and $users variables
• Missing closing directive entirely

5. You want to include a Blade template named header.blade.php inside your main view. Which directive correctly includes it and passes a variable $title with value 'Welcome'?

hard

A. @include('header', ['title' => 'Welcome'])

B. @include('header', $title = 'Welcome')

C. @include('header', ['title' => Welcome])

D. @include('header', title = 'Welcome')

Solution

1. Step 1: Recall correct syntax for @include with data

   Blade's @include accepts the view name and an associative array of data.

2. Step 2: Check array syntax for passing variables

   The correct way is @include('header', ['title' => 'Welcome']) with quotes around string values.

3. Final Answer:

   @include('header', ['title' => 'Welcome']) -> Option A

4. Quick Check:

   Pass variables as array in @include [OK]

Hint: Pass variables as array in @include(['key' => value]) [OK]

Common Mistakes:

• Passing variable without array brackets
• Missing quotes around string values
• Using assignment syntax inside @include