Enhancing Blade with Custom Directives

If you're using the same condition repeatedly in Blade, especially if it's complex, you likely won't want to repeat it multiple times. To avoid this, Laravel provides a neat way to define your condition once in the AppServiceProvider class:

use Illuminate\Support\Facades\Blade;

/**
* Bootstrap any application services.
*/
public function boot(): void
{
    Blade::if('isGuest', function () {
        return auth()->guest();
    });
}

Then, you can easily use it like this:

@isGuest
    <p>You are a guest</p>
@endisGuest

In addition, you can define a custom Blade directive like this:

/**
* Bootstrap any application services.
*/
public function boot(): void
{
    Blade::if('isAuth', function () {
        return auth()->check();
    });

    Blade::directive('welcomeUser', fn($name) => "Welcome $name");
}

Once defined, you can use these custom directives in your Blade templates like this:

@isAuth

@welcomeUser(auth()->user()->name)

@endisAuth