Question

我正在尝试与belongsTo范围直接建立->withTrashed()关系。

这是软删除的模型：


<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;

class ContractType extends Model
{
    use SoftDeletes;
}

这是尝试访问合同类型的模型：

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class Employee extends Model
{
    protected $fillable = [
        'contract_type_id',
        'name'
    ];

    public function contract_type()
    {
        return $this->belongsTo(ContractType::class);
    }

    public function contract_type_with_trashed()
    {
        return $this->belongsTo(ContractType::class)->withTrashed();
    }
}

这是我查询这些关系时得到的：

$employee = Employee::first(); // has a contract_type_id of 1
dd($employee->contract_type, $employee->contract_type_with_trashed);

/*
ContractType {#722 ▼
  #dates: array:2 [▶]
  #connection: "mysql"
  #table: "contract_types"
  #primaryKey: "id"
  #keyType: "int"
  +incrementing: true
  #with: []
  #withCount: []
  #perPage: 15
  +exists: true
  +wasRecentlyCreated: false
  #attributes: array:7 [▶]
  #original: array:7 [▶]
  #changes: []
  #casts: []
  #dateFormat: null
  #appends: []
  #dispatchesEvents: []
  #observables: []
  #relations: []
  #touches: []
  +timestamps: true
  #hidden: []
  #visible: []
  #fillable: []
  #guarded: array:1 [▶]
  #forceDeleting: false
}
null
*/

实际上没有删除任何ContractType，并且contract_types表中确实有deleted_at列。

我该如何使用它？

[编辑]

这是contract_types表迁移：

Schema::create('contract_types', function (Blueprint $table) {
    $table->tinyIncrements('id');
    $table->string('name');
    $table->timestamps();
    $table->softDeletes();
});

以及employees表迁移：

Schema::create('employees', function (Blueprint $table) {
    $table->bigIncrements('id');
    $table->unsignedTinyInteger('contract_type_id');
    $table->string('name');
    $table->timestamps();

    $table->foreign('contract_type_id')->references('id')->on('contract_types')->onDelete('cascade');
);

结果，我的deleted_at列符合预期。我可以补充一点，$employee->contract_type()->withTrashed()->get()可以很好地工作，但是当它在关系中时，它就行不通了。

如何在belongsTo关系上使用软删除？

0 个答案: