Laravel DD helper不在每个函数中执行 [英] Laravel DD helper not executing inside each function

问题描述

我目前正在尝试通过复制具有适当关系的对象来解决问题.我通常使用Laravel的DD帮助程序来查看是否获得了正确的信息，但是在这种情况下，当它碰到要执行的方法中的行时，我认为它并没有在运行.

I'm currently trying to troubleshoot my way through duplicating an object with its appropriate relationships. I usually use Laravel's DD helper to see if I'm getting the right information, but in this instance, I don't think that it's being run when it hits the line in the method that gets executed.

这是我的控制器方法来处理重复.

Here's my controller method that's handling the duplication.

        $copiedManagementSystem = $managementSystem->replicate();
    $copiedManagementSystem->inspections->each(function($inspection) {
        $copiedInspection = $copiedManagementSystem->inspections()->create([
            'name' => $inspection->name,
            'management_system_id' => $inspection->managementSystemId,
            'pass_score' => $inspection->passScore,
            'max_score' => $inspection->maxScore,
            'order' => $inspection->order,
        ]);
            dd($inspection); //I've placed the dd here but it doesn't work in any position, in any part of the each function.
        $inspection->checks->each(function($check){
            $copiedInspection->checks()->create([
                'question' => $check->question,
                'values' => $check->values,
                'type' => $check->type,
                'inspection_id' => $check->inspectionId,
                'order' => $check->order,
            ]);
        });
    });
    $copiedManagementSystem->save();

这是具有检查关系的管理系统模型

Here is the ManagementSystem's model with the inspections relationship

class ManagementSystem extends Model 
{
    protected $table = 'management_systems';

    protected $fillable = ['name', 'description'];

    public function inspections()
    {
        return $this->hasMany(Inspection::class);
    }
}

这是具有关系的检验模型

This is the inspection's model with the relations

class Inspection extends Model 
{
    protected $table = 'inspections';

    protected $casts = [
    'order' => 'integer'
    ];

protected $fillable = [
    'name', 
    'management_system_id', 
    'pass_score', 
    'max_score',
    'order'
];

    public function checks()
    {
        return $this->hasMany(Check::class);
    }

    public function managementSystem()
    {
        return $this->belongsTo(ManagementSystem::class);
    }
}

最后，这是检查模型及其关系.

And finally, here is the check model with its relations.

class Check extends Model 
{
protected $table = 'checks';

protected $fillable = [
    'question',
    'values',
    'type',
    'inspection_id',
    'order'
];

    public function inspection()
    {
         return $this->belongsTo(Inspection::class);            
    }

    public function answers()
    {
        return $this->hasMany(Answer::class);
    }
}

非常感谢您的帮助:)

因此，我遇到了一个奇怪的情况.如果我运行以下命令:

So I've come across a strange occurrence. If I run the following:

dd($copiedManagementSystem->inspections->count();

它返回0.但是如果我运行:

It returns 0. But if I run:

dd($managementSystem->inspections->count());

它返回12，这是正确的值.

It returns 12, which is the correct value.

有人知道为什么会这样吗?如果是这样，我该如何解决该问题?

Does anyone know why this happens? And if so, how can I fix the issue?

谢谢！

推荐答案

由于copy()不会复制关系，因此您可以尝试执行以下操作.

Since replicate() does not replicate the relations you could try something like this.

$copiedManagementSystem = $managementSystem->replicate()
foreach($managementSystem->inspections as $inspection) {
    $copiedManagementSystem->inspections->attach($inspection->replicate())
}

这是伪代码，如果您希望链接原始检查，请删除$ inspection-> replicate()调用，而只需使用$ inspection

It is pseudo code, if you want the original inspections linked remove the $inspection->replicate() call and just use $inspection

$ managementSystem可能具有的任何其他关系也是如此.

Same goes for any other relations $managementSystem might have.

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