CODE EXAMPLE FOR PHP

firstOrfail()

<?php

namespace AppHttpControllers;

use AppModelsPost;
use IlluminateHttpRequest;

class PageController extends Controller
{
    //
    public function index(){

        $posts = Post::latest("id")->get();
        return view("index",["posts"=>$posts]);//compact($posts)
    }

    public function detail($slug){
        $post = Post::where("slug",$slug)->firstOrfail();
        return  view('post.detail',compact('post'));
        return $slug;
    }
}