Unique Slug Code

gistfile1.php

    public static function unique_slug($title)
    {
        $post_slug = \Str::slug($title);
        $next_slug = null;
        
        $i = 0;
        do
        {
        	if ($i == 0)
        	{
        		$post = static::where('slug', '=', $post_slug)->first();
        	}
        	else
        	{
        		$next_slug = $post_slug . "-{$i}";
	            $post = static::where('slug', '=', $next_slug)->first();
        	}
            $i++;
        }
        while( !is_null( $post ));

        return ($next_slug != null) ? $next_slug : $post_slug;
    }