拉维尔雄辩关系错误

Question

基本上，我试图在用户、post和回复数据库之间建立一种关系。以下是模型：注释模型

<?php

namespace App\Eloquent;

use Illuminate\Database\Eloquent\Model;

class comments extends Model
{
    public $timestamps = true;
    protected $table = 'comments';
    protected $guarded = ['id'];

    public function userInfo()
    {
        return $this->belongsTo('App\Eloquent\User', 'user_id');
    }
    public function reply()
    {
        return $this->hasOne('App\Eloquent\reply', 'post_id');
    }
}

答复方式：

<?php

namespace App\Eloquent;

use Illuminate\Database\Eloquent\Model;

class reply extends Model
{
    public $timestamps = true;
    protected $table = 'replies';
    protected $guarded = ['id'];


    function user()
    {
        return $this->belongsTo('App\Eloquent\User', 'user_id');
    }
}

主要代码：

<?php

namespace App\Http\Controllers;

use App\Eloquent\comments;
use App\Eloquent\reply;
use Illuminate\Http\Request;

class CommentsController extends Controller
{
    public function index()
    {
        $commentsData = [];
        $replyData = [];
            $comments = comments::all();
        foreach ($comments as $comment)
        {
            if($comments !== null) {
                $user = comments::find($comment->user_id)->userInfo();
                $reply = comments::find($comment->id)->reply();
            }
            if(reply::all() !== null) {
                $user_reply = reply::find($comment->id)->user();
            }
            $commentsData[$comment->id]['name'] = $user->name;
            $commentsData[$comment->id]['message'] = $comment->body;
            $commentsData[$comment->id]['rating'] = $comment->rating;
            $commentsData[$comment->id]['timestamp'] = $comment->created_at;
            foreach($reply as $re)
            {
                $replyData[$re->post_id][$re->id]['name'] = $user_reply->name;
                $replyData[$re->post_id][$re->id]['body'] = $reply->body;
            }

        }

        return view('comments')->with('comments', $commentsData)->with('reply', $replyData);
    }
}

当我进入评论页面时，我得到以下错误：

未定义的属性：照亮\数据库\雄辩\关系\属于::$name。

这是我第一次使用关系，所以我查看了Laravel文档，但仍然不知道我做错了什么。基本上，我试图从用户数据库中获取用户名（使用comments user_id作为外键），获取评论详细信息（body，rating）并获取回复数据，使用post_id（在回复表中）作为外键，使用comments表主键id作为本地键。

Answer 1

我做了一些改变，关于你的Foreach循环中的一些关系，这将使它更快，更可用

你正在使用关系，并且仍然使用数组键找到用户，它更有可能在$评论上使用bcz$评论已经是模型，你可以很容易地应用关系。

foreach ($comments as $comment)
    {
        $user = $comment->userInfo();
        $reply = $comment->reply();

        $commentsData[$comment->id]['name'] = $user->name;
        $commentsData[$comment->id]['message'] = $comment->body;
        $commentsData[$comment->id]['rating'] = $comment->rating;
        $commentsData[$comment->id]['timestamp'] = $comment->created_at;
          foreach($reply as $re)
            {
                $replyData[$re->post_id][$re->id]['name'] = $re->user()->name;
                $replyData[$re->post_id][$re->id]['body'] = $re->body;
            }
        }

Answer 2

您将从模型而不是相关对象中获得关系定义。

代替

$user = comments::find($comment->user_id)->userInfo();
$reply = comments::find($comment->id)->reply();
$user_reply = reply::find($comment->id)->user();

具有

$user = comments::find($comment->user_id)->userInfo;
$reply = comments::find($comment->id)->reply;
$user_reply = reply::find($comment->id)->user;

请注意这些行末尾去掉的括号。