Laravel 5.7 Eloquent 上市关系

Question

我正在尝试通过连接获取数据集，我想使用 eloquent 自动完成，无需手动查询。我也做了关系，但是当我尝试列出连接的数据时，它以某种方式相反。

Laravel 版本 5.7 MySQL 数据库

已更新，添加了数据库架构。 my_tab3s table:

mytab1 table:

错误：

"SQLSTATE[42S22]: Column not found: 1054 Unknown column 'myTab1.my_tab3_id' in 'where clause' (SQL: select * from myTab1 where myTab1.my_tab3_id in (1, 2))"

myTab3.php

    <?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class myTab3 extends Model
{
    //
    protected $table = 'my_tab3s';
    public $timestamps = true;


    protected $fillable = [
    'coolField',
    'muhCurrentDate',
    'rast',
    'myTab1_id'
  ];


    public function myTab1(){
        return $this->hasOne('App\myTab1');
    }
}

myTab1.php

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class myTab1 extends Model
{
    //
    public function scopeBigger($query){
        return $query->where('id','>','1');
    }
    public function scopeHasLetterZ($query){
        return $query->where('someField','like','%z%');
    }

    public function gimmeAll(){
        return myTab1::All();
    }
    protected $table = 'myTab1';
    public $timestamps = true;

    protected $fillable = [
    'someField'
  ];


    public function myTab3(){
        return $this->belongsTo('App\myTab3');
    }
}

myTab3Controller.php 索引方法

 public function index()
    {

        /*$dataSet = myTab3::All();*/
        //$dataSet->myTab1()->get();
        $dataSet = myTab3::with('myTab1')->get();
        return view('myTab3.index',compact('dataSet'));
    }

查看部分

@foreach($dataSet as $data)
        <tr>
            <td>{{$data->id}}</td>
            <td>{{$data->coolField}}</td>
            <td>{{$data->muhCurrentDate}}</td>
            <td>{{$data->created_at}}</td>
            <td>{{$data->updated_at}}</td>
            <td>{{$data->rast}}</td>
            <td>{{$data->myTab1->someField}}</td>
        </tr>
        @endforeach

Answer 1

没有数据库很难说，但我认为你颠倒了你的关系，myTab3 应该是 belongsTo，myTab1[=15 应该是 hasOne =]

编辑：

试试 :

public function myTab1(){
    return $this->belongsTo('App\myTab1', 'myTab1_id');
}

Laravel 5.7 Eloquent 上市关系

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