我使用 laravel 8 并有 3 个表:产品、产品价格和产品发布者:
这是我的这种关系的产品模型:
public function lastPrice(){
return $this->hasMany(ProductPrice::class)->where('status','active')->orderBy('created_at','DESC')->distinct('publisher_id');
}
这是我的发布者关系的 productsPrice 模型:
public function getPublisher(){
return $this->belongsTo(ProductsPublisher::class,'publisher_id');
}
现在,我想为我的 api 使用 laravel 资源,我写了产品资源:
public function toArray($request)
{
return [
'id' => $this->id,
'price' => lastPrice::make($this->lastPrice),
'status' => $this->status,
'slug' => $this->slug,
'title' => $this->title,
'description' => $this->description,
'txt' => $this->txt,
'lang' => $this->lang,
'created_at' => $this->created_at,
'updated_at' => $this->updated_at,
];
但是在 lastPrice 资源中,当我这样写时:
return [
'id' => $this->id,
'main_price' => $this->main_price
];
它给了我这个错误:
此集合实例上不存在属性 [id]。
当我使用此代码时:
return parent::toArray($request);
得到响应,但因为我需要在我的 lastPirce 中为发布者使用另一个关系,所以我不能使用该代码,应该单独返回我的数据。我应该怎么做?谢谢
编辑 1: 这是我的控制器代码:
$products = Product::where('id',$id)->where('slug',$slug)->where('status','confirm')->first();
if(!$products){
return $this->sendError('Post does not exist.');
}else{
return $this->sendResponse(new \App\Http\Resources\Products\Products($products), 'Posts fetched.');
}
这是 sendResponse & sendError:
public function sendResponse($result, $message)
{
$response = [
'success' => true,
'data' => $result,
'message' => $message,
];
return response()->json($response, 200);
}
public function sendError($error, $errorMessages = [], $code = 404)
{
$response = [
'success' => false,
'message' => $error,
];
if(!empty($errorMessages)){
$response['data'] = $errorMessages;
}
return response()->json($response, $code);
}
谢谢。
编辑 2: 我将我的 lastPrice Resource toArray 函数更改为此并解决了我的问题,但我认为这不是一个干净的方法,有更好的主意吗?
$old_data = parent::toArray($request);
$co = 0;
$new_data = [];
foreach ($old_data as $index){
$publisher_data = Cache::remember('publisher'.$index['publisher_id'], env('CACHE_TIME_LONG') , function () use ($index) {
return ProductsPublisher::where('id' , $index['publisher_id'])->first();
});
$new_data[$co]['main_prices'] = $index['main_price'];
$new_data[$co]['off_prices'] = $index['off_price'];
$new_data[$co]['publisher'] = SinglePublisher::make($publisher_data);
$new_data[$co]['created_at'] = $index['created_at'];
$co++;
}
return $new_data;