Laravel blade custom directive with include partial

If anyone comes across this question since its post in '16, Laravel now has a blade helper to create a custom include directive (since version 5.6.5):

Blade::include('viewsNameSpace::path.to.view.file');

This is to be added to the boot() method of your app service provider. More examples here.

This is how I made it work:

return "<?php echo view('$formPartial')->render(); ?>";

Where $formPartial is 'viewsNameSpace::partials._form'.