faveo/vendor/maatwebsite/excel/docs/blade/vars.md

Passing variables to the view

As parameter

We can pass variables to the view by using the second parameter inside the loadView() method.

$sheet->loadView('view', array('key' => 'value'));

With with()

Alternatively you can use the with() method which works the same as with Laravel views.

// Using normal with()
$sheet->loadView('view')
	  ->with('key', 'value');

// using dynamic with()
$sheet->loadView('view')
	  ->withKey('value');