A

Canonical helper

<?php

function canonical()
{
    $route = Route::current();
    if (!$route) {
        return false;
    }
    $action = $route->getAction();
    if (!$action) {
        return false;
    }
    if (!array_has($action, 'uses') or $action['uses'] instanceof Closure) {
        return false;
    }
    $uses = explode('App\Http\Controllers\\', $action['uses'])[1];
    if (!$uses) {
        return false;
    }
    $parameters = $route->parameters();
    if ($parameters) {
        return action($uses, $parameters);
    } else {
        return action($uses);
    }
}

Laravel sharable Trait

<?php

namespace App\Traits;

trait Shareable
{
    public function getShareUrl($type = 'facebook')
    {
        if ($type == 'facebook') {
            $query = urldecode(http_build_query([
                'app_id' => env('FACEBOOK_ID'),
                'href' => canonical(),
                'display' => 'page',
                'title' => $this->title
            ]));

            return 'https://www.facebook.com/dialog/share?' . $query;
        }

        if ($type == 'twitter') {
            $query = urldecode(http_build_query([
                'url' => canonical(),
                'text' => str_limit($this->title, 100)
            ]));

            return 'https://twitter.com/intent/tweet?' . $query;
        }
    }
}