Laravel Unique slug, Very easy stuffs..

laravel-unique-slug.php

<?php
/**
* Crate method
* Change Product to your desired model name, dont' forget to import the Model and Str classname.
* Change whereSlug to where_(your_slug_field_name) with CamelCase
*/
public function store(Request $request) {

	$unique_slug = Str::slug($request->title);
	$unique_next = 2;
	while(Product::whereSlug($unique_slug)->first()) {
	  $unique_slug = Str::slug($request->title) . '-' . $unique_next;
	  $unique_next++;
	}

	$product = new Product;
	$product->slug = $unique_slug;
	$product->save();
}

/**
* Update method
* Change Product to your desired model name
* Change whereSlug to where_(your_slug_field_name) with CamelCase
*/
public function update(Request $request, Product $product) {

	$unique_slug = Str::slug($request->name);
    $unique_next = 2;
    while(Product::whereSlug($unique_slug)->first()) {
        if($product->name == $request->name) {
            $unique_slug = $product->slug;
            break;
        }
        $unique_slug = Str::slug($request->name) . '-' . $unique_next;
        $unique_next++;
    }
	$product->slug = $unique_slug;
	$product->save();
}