Make the cookie last X days. If the cookie doesn't exist later in your application, that means X days have passed.

So to display your modal every X days, just check that the cookie doesn't exist. And then make the cookie again.

To create your cookie you need to use on the route associated with the homepage:

Cookie::queue($name, $value, $minutes);

To check if the cookie exists do something like:

if (Cookie::get('myCookie') !== false) {
    //do stuff
}

Source: http://laravel.com/docs/requests#cookies

I'm not understand. So i have to create cookies for new user who comes on website (any page). And after X days i want to show them popup which i included in my posts.show.

I don't know in which method i have to set up cookies, and in which method i have to grab the cookie.

Put your newsletter form inside

if (Cookie::get('myCookie') !== false) {
    //do stuff
}

If this is in a blade view it should look like:

@if (Cookie::get('myCookie') !== false) 
    //do stuff
@endif

does this work with laravel 5?? it doesn't seem to work with me