php - Laravel 5.6 试图获取非对象的属性

Question

当我尝试回显值时，我收到异常。我用 dd() 检查集合并且不为空。

我的模型:

客户:

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Cliente extends Model
{
    protected $table = 'clientes';

    public function ordens() {
        return $this->hasMany('App\OrdemServico','cliente_id');
    }
}

订单服务:

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class OrdemServico extends Model
{
    protected $table = 'ordens_servico';

    public function clientes() {
        return $this->belongsTo('App\Cliente','id');
    }
}

OrdemServicoController:

public function index()
{

    $ordens = OrdemServico::with('clientes')->get();

    return view('home',compact('ordens'));

}

零件 View 首页:

             <table class="table">
                    <thead>
                    <tr>
                        <th scope="col">#</th>
                        <th scope="col">Nome Cliente</th>
                        <th scope="col">Modelo</th>
                        <th scope="col">Status O.S</th>
                    </tr>
                    </thead>
                @foreach($ordens as $ordem)
                    <?php //dd($ordem->clientes->nome); ?>
                    <tr>
                        <th scope="row"></th>
                        <td>{{$ordem->id}}</td>
                        <td>{{$ordem->clientes->nome}}</td>
                        <td></td>
                        <td></td>
                        <td><button class="btn btn-outline-primary" onclick="location.href='{{ route('ordem_servico.show',1) }}'">Mostrar mais</button></td>
                    </tr>
                @endforeach

                    </tbody>
                </table>

当我

<?php dd($ordem->clientes->nome); ?>

我收到:

dd() return

但是当我尝试回显该值时，我收到了一条执行消息。

$ordem 的 dd()。

https://gist.github.com/vgoncalves13/8140a7a1bf2cb85fe4d16da20ea34acc

Answer 1

也许你的关系应该被称为cliente()假设一个订单只属于一个App\Cliente...你应该传递第三个参数是other_key...你可以通过使用英语来避免这种类型的错误(因为 laravel 会搜索 customer_id 和 order_id)

试试下面的代码

命名空间应用；

使用 Illuminate\Database\Eloquent\Model；

class Cliente extends Model
{
    protected $table = 'clientes';

    public function ordens() {
        return $this->hasMany('App\OrdemServico','cliente_id');
    }
}

和

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class OrdemServico extends Model
{
    protected $table = 'ordens_servico';

    public function cliente() {
        return $this->belongsTo('App\Cliente', 'id', 'cliente_id');
    }
}

引用:https://laravel.com/docs/5.6/eloquent-relationships#one-to-many