Trying to get the username using MODELS but getting this error: Trying to get property of non-object

Question

错误： ErrorException in 814a6fb85b2cceb262c3a8191c08e42742940fc7.php line 223: Trying to get property of non-object (View: /var/www/html/m/TS/resources/views/d/show-details.blade.php)

实际上我正在尝试获取将结果存储在数据库中的用户名，即 TN has got user_id as a foreign key in the table 所以我需要使用 [=19= 从 user_id 中获取 username ]尝试获取与 ID 关联的属性非对象 when I try to get theusername`。我不知道我哪里做错了。

我遇到的错误在这里 value="{{$tn->users->username}}" 显示在缓存文件中。

我也在下面给出了我的代码以供查看。

提前致谢

控制器

public function details($id) {

        $d= $this->detail->showDetails($id);
        $tn= TN::find($id);

// calling functions from Model
        $n = $d->tN;
        $o = $d->tO;

return view('details.show-details', compact('d','o', 'n', 'tn'));

}

查看

foreach($n as $n)
<input style="font-size:10px;font-weight: bold; color:black; background:#59d864;" value="{{$tn->users->username}}" readonly>

型号

用户模型

<?php

namespace App;

use Illuminate\Foundation\Auth\User as Authenticatable;
use App\TN;
use App\TO;
use App\UserType;

class User extends Authenticatable
{
/**
 * The attributes that are mass assignable.
 *
 * @var array
 */
protected $fillable = [
    'username', 'password',
];

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

public function tN() {
    return $this->hasMany(TN::class);
}

public function tO() {
    return $this->hasMany(TO::class);
}

public function userType() {
    return $this->belongsTo(UserType::class);
}

}

TO 型号

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;
use App\D;
use App\TT;
use App\User;

class TO extends Model
{
protected $fillable = ['o', 'date'];

public function d() {
    return $this->belongsTo(D::class);
}

public function tOType() {
    return $this->belongsTo(TOType::class);
}

public function users() {
    return $this->belongsTo(User::class);
}
}

TN 型号

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;
use App\Debtor;
use App\TracingType;
use App\User;

class TN extends Model
{
protected $fillable = ['r', 'date'];

public function d() {
   return $this->belongsTo(D::class);
}

public function tType() {
    return $this->belongsTo(TType::class);
}

public function users() {
    return $this->belongsTo(User::class);
}

}

Answer 1

你好，我已经解决了这个问题，但是忘记了 post 问题就在这里

public function users() {
    return $this->belongsTo(User::class);
}

这应该是 public function user() 而不是 users。因为它 belongsTo 到 User class，它应该是单数而不是复数，对于 hasMany 我们使用复数。谢谢你的帮助... :)

Trying to get the username using MODELS but getting this error: Trying to get property of non-object