API资源中的Laravel多级关系 [英] Laravel Multi level relationship in API Resource

问题描述

我的问题是，我确实不需要加载api资源.查看我的Api资源文件

My problem is, the api resource loading which i really not needed. Look into my Api Resource files

//BoxItemResource.php

//BoxItemResource.php

 public function toArray($request)
{
    return [
        'box_id'=> $this->box_id,
        'item_id'=> $this->item_id,
        'item'=> new ItemResource($this->item)
    ];
}

//ItemResource.php

//ItemResource.php

public function toArray($request)
{
    return [
        'id' => $this->id,
        'shipping_price' => $this->shipping_price,
        'condition_id' => $this->condition_id,
        'condition' => new ConditionResource($this->condition)
    ];
}

//ConditionResource.php

//ConditionResource.php

public function toArray($request)
{
    return [
        'id'=> $this->id,
        'name'=> $this->name
    ];
}

//控制器

return BoxItemResource::collection(
        BoxItem::with([
            'item'
        ])->paginate(1)
    );

我的问题是，我只需要BoxItem和Item.我真的不想加载条件.如果我从ItemResource.php中删除条件关系，它将起作用.但是问题是我在需要此条件的其他地方使用了ItemResource.php.

My problem is, I just need only BoxItem and Item here. I don't really want to load condition. If i remove the condition relation from ItemResource.php, it will work. but the problem is I am using the ItemResource.php in some other place which need this condition.

是否可以在此处拒绝装载条件关系船.

Is it possible to deny loading condition relation ship here.

更清楚地讲，我想加载我在controller(在-> with())中提到的关系.

more clearly, I want to load the relationship which I mention in controller(in ->with()) .

谢谢.

推荐答案

API资源允许条件关系.

对于属性，我认为足以用于您的情况，这意味着您可以将属性值简单地包装在 $ this-> when($ condition，$ value)和如果 $ condition == false ，整个属性将从结果中删除.下面是您的代码的具体示例:

For attributes, which in my opinion is sufficient to use in your case, this means you can simply wrap the attribute value in $this->when($condition, $value) and the whole attribute will be removed from the result if $condition == false. So a concrete example of your code:

return [
    'box_id'=> $this->box_id,
    'item_id'=> $this->item_id,
    'item'=> $this->when($this->relationLoaded('item'), new ItemResource($this->item))
];

或者如果您喜欢使用关系样式:

Or if you prefer using the relationship style:

return [
    'box_id'=> $this->box_id,
    'item_id'=> $this->item_id,
    'item'=> new ItemResource($this->whenLoaded('item'))
];

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