Check if variable exist in laravel's blade directive

Question

I\'m trying to create blade directive which echo variable (if variable defined) or echo \"no data\" if variable undefined.

This is my code in AppServiceProvider.ph

Answer 1

For Laravel 5.7 onwards use.

{{ $checkvariable ?? 'not-exist' }}

Answer 2

For Laravel version >=5.7

{{ $value ?? '' }}

For Laravel version <5.7

{{ $value or '' }}

Answer 3

The @empty directive might be useful:

@empty($var)
   $var is unset or false-y
@endempty

Answer 4

For the last version of Larvael make the variable optional in the blade template. Replace $myvar with {{ $myvar }} with {{ $myvar?? '' }}

Answer 5

Blade has a directive to check if a variable is set:

@isset($var)

@endisset

Answer 6

If you trying check a bool variable you can use @unless

<input type="text" class="@unless ($variable) d-none @endunless" >