laravel:insert database

<?php
namespace App\Http\Controllers;
use App\Posts;

class PostsController extends Controller
{
    //
    public function index(){
        $posts = Posts::all();
        return view("post.index",compact("posts"));
    }

    public function create(){
        return view("post.create");
    }

    public function store(){
        $post = new Posts;
        $post->title = request("title");
        $post->body = request("body");
        $post->save();

//        or
//      must set $fillable in model

        Posts::create([
            "title" => request("title"),
            "body" => request("body")
        ]);
        return redirect("posts");
    }
}