Lets assume you want to convert DateTime objects into human readable strings easily in your blade files. The laravel docs suggests adding the following code snippet into AppServiceProvider::boot method:

// allows @datetime(new \DateTime('now')) to display the current date and time

Blade::directive('datetime', function($expression) {
    return "<?php echo with{$expression}->format('m/d/Y H:i'); ?>";
});

This is pretty simple. However it's a little more complex to abstract the format into a second parameter for the datetime directive e.g.: @datetime(new \DateTime('now'), 'm/d/Y H:i'). Rather than using regex to get the 2 separate parameters, I like to create a self executing class capable of handling any number of parameters.

class DateFormatter
{
	public function __invoke(\DateTime $date, $format)
	{
		return $date->format($format);
	}
}

Remember, when you add the __invoke method to any class, it can be executed like a closure.

$formatter = new \DateFormatter();
echo $formatter(new \DateTime('2016-01-19'), 'Y'); // 2016

The Blade::directive should now be updated to use our DateFormatter class and a DateFormatter instance should be injected into the templates.

// Inject DateFormatter instance into all templates
View::with('dateFormatter', new \DateFormatter);

// Update directive to use `DateFormatter`
Blade::directive('datetime', function ($expression) {
	return "<?php echo \$dateFormatter{$expression}; ?>";
});

Imagine the following template code:

Registered on @datetime($user->createdAt, 'Y-m-d')

When the template is compiled, the above line will be compiled to:

Registered on <?php echo $dateFormatter($user->createdAt, 'Y-m-d'); ?>