Question

我的数据库充满了数据并显示了所有数据的工作原理。但是如果我只尝试显示一个特定的线程，我得到一个空的结果，我无法找出原因。

web.php

<?php

Route::get('/', function () {
    return view('welcome');
});


Auth::routes();

Route::get('/home', 'HomeController@index')->name('home');
Route::get('/threads', 'ThreadsController@index');
Route::get('/threads/{threads}', 'ThreadsController@show');

ThreadsController @ index有效，但ThreadsController @ show不起作用。

ThreadsController.php

<?php

namespace App\Http\Controllers;

use App\Thread;
use Illuminate\Http\Request;

class ThreadsController extends Controller
{
    /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function index()
    {
        $threads = Thread::latest()->get();
        return view('threads.index', compact('threads'));
        //return $threads;
    }

    /**
     * Show the form for creating a new resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function create()
    {
        //
    }

    /**
     * Store a newly created resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */
    public function store(Request $request)
    {
        //
    }

    /**
     * Display the specified resource.
     *
     * @param  \App\Thread  $thread
     * @return \Illuminate\Http\Response
     */
    public function show(Thread $thread)
    {
        //return view('threads.show', compact('thread'));
        return $thread;
    }

    /**
     * Show the form for editing the specified resource.
     *
     * @param  \App\Thread  $thread
     * @return \Illuminate\Http\Response
     */
    public function edit(Thread $thread)
    {
        //
    }

    /**
     * Update the specified resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \App\Thread  $thread
     * @return \Illuminate\Http\Response
     */
    public function update(Request $request, Thread $thread)
    {
        //
    }

    /**
     * Remove the specified resource from storage.
     *
     * @param  \App\Thread  $thread
     * @return \Illuminate\Http\Response
     */
    public function destroy(Thread $thread)
    {
        //
    }
}

这是laracast教程的一个例子：link

为什么这个例子不起作用？我在代码中找不到任何拼写错误。我的版本：

php artisan --version
Laravel Framework 5.4.32

Answer 1

将您的节目路线重命名为以下内容：

Route::get('/threads/{thread}', 'ThreadsController@show');

您正在加载Thread对象，而不是Threads对象。

Laravel - 尝试显示特定线程的空结果

1 个答案: