Laravel Show details based on custom field

I am using Laravel 5 and I followed by this tutorial Link

public function show($id)
    {
        $post = Post::find($id);


        if (is_null($post)) {
            return $this->sendError('Post not found.');
        }


        return $this->sendResponse($post->toArray(), 'Post retrieved successfully.');
    }

For showing I am using above function. it working fine but my problem is i used cuid field in my table I want to get collection based on cuid how to get custom collection

also i need to use Angular Js 1 how to integrate can you please some one guide me how to achive this

via Chebli Mohamed