라라벨 매크로

Request::macro('introduce', function ($name) {
    echo 'Hello ' . $name . '!';
});
Request::introduce('Caleb'); // outputs "Hello Caleb!"

Request::macro('tldIs', function ($tld) {
    return Str::is('*.' . $tld, $this->root());
});
Request::tldIs('com') // returns true for app.com
Request::tldIs('dev') // returns false for app.com

class AppServiceProvider
{
    public function boot()
    {
        Request::macro('context', function () {
            return get_class($this);
        }
    }
...
Request::context(); 
// returns 'Illuminate\Http\Request'
// instead of 'App\AppServiceProvider'

Builder::macro('whenTldMatches', function($tld, $callback) {
    if (Request::tldIs($tld)) {
        call_user_func($callback->bindTo($this));
    }
    return $this;
});
SomeModel::whenTldMatches('org', function () {
    $this->where('id', '>', 5);
})->get();
// applies ->where() 在 app.org 上应用，而不在 app.com 上应用