试图在 laravel 5.2 中获取非对象的属性

Question

这是我的帖子表

    <?php
    use Illuminate\Database\Schema\Blueprint;
    use Illuminate\Database\Migrations\Migration;
    class CreatePostsTable extends Migration
    {

    public function up()
    {
        Schema::create('posts', function (Blueprint $table) {
            $table->increments('id');

            $table->integer('user_id')->unsigned();
            $table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');

            $table->integer('prf_id')->unsigned();
            $table->foreign('prf_id')->references('id')->on('profiles')->onDelete('cascade');

            $table->longText('status');
            $table->timestamps();
        });
    }


    public function down()
    {
        Schema::drop('posts');
    }
}

这是我的帖子模型：

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Post extends Model
{
    protected $table='posts';
    protected $fillable = ['status'];


    protected $hidden = [];

    public function profile(){
        return $this->belongsTo('App\Profile');
    }

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


}

这是个人资料模型

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Profile extends Model
{
    protected $table='profiles';

    protected $fillable = ['user_id','name','position','roles','username','college','phone','location','graduation','skill'];


    protected $hidden = [];

     public function posts(){
        return $this->hasMany('App\Post');
    }

}

这是用户模型

<?php

namespace App;

use Illuminate\Foundation\Auth\User as Authenticatable;

class User extends Authenticatable
{

    protected $fillable = [
        'fname','lname', 'email','sex', 'password','user_id','roles'
    ];

    /**
     * The attributes that should be hidden for arrays.
     *
     * @var array
     */
    protected $hidden = [
        'password', 'remember_token',
    ];


     public function posts(){
        return $this->hasMany('App\Post');
    }

}

当我尝试 {{$status->user->fname}} this.its 显示正确的值但是当我尝试 {{$status->profile->username} } 这个，每次它显示我 试图获取非对象的属性（视图：C:\xampp\htdocs\abc\resources\views\pages\profile.blade.php） 我真的不知道为什么:(

Answer 1

在您的 Post 类中尝试以下代码：

public function profile(){
    return $this->belongsTo('App\Profile', 'prf_id');
}