1

我想使用laravel-datatables-fractal来使用 Fractal 转换服务器端响应。

Product首先，我为这样的模型编写了一个变压器：

class ProductTransformer extends TransformerAbstract
{
    protected $availableIncludes = [
        'prices'
    ];

    public function transform(Product $product)
    {
        $transforms = [
            'product_id'     => $product->product_id,
            'code'           => $product->code,
            'title'          => $product->title,
            'description'    => $product->description,
        ];

        return $transforms;
    }

    public function includePrices(Product $product)
    {
        $prices = $product->prices;

        return $this->collection($prices, new PriceTransformer, FALSE);
    }
}

如您所见，有一个包含的prices属性使用另一个名为PriceTransformer.

在生成ProductController并返回所有产品的结果作为数据表格式的响应中，我有一个datatable这样的方法：

public function datatable(Request $request)
    {
        return app('datatables')->of(Product::all())
            ->setTransformer(new ProductTransformer)
//            ->setSerializer(new CustomArraySerializer())
            ->make(TRUE);
    }

返回响应，但我遇到的一个问题是：当我想返回prices包含的属性时，它以如下data属性返回：

{
    "draw": 0,
    "recordsTotal": 8,
    "recordsFiltered": 8,
    "data": [
        {
            "product_id": 1,
            "title": "Product Title 1",
            "for_sale": true,
            "for_purchase": true,
            "changeable": false,
            "returnable": false,
            "sale_price": "40000.00",
            "purchase_price": "5000.00",
            "creator": 1,
            "created_at": "2017-12-11 12:21:49",
            "updated_at": "2017-12-14 11:55:52",
            "prices": {
                "data": [
                    {
                        "sale_price": "30000.00",
                        "created_at": "2017-12-11 12:21:49"
                    },
                    {
                        "sale_price": "40000.00",
                        "created_at": "2017-12-11 12:39:00"
                    },
                ]
            }
        },
        {
            "product_id": 11,
            "title": "Product Title 11",
            "for_sale": true,
            "for_purchase": true,
            "changeable": false,
            "returnable": false,
            "sale_price": "50000.00",
            "purchase_price": "40000.00",
            "creator": 1,
            "created_at": "2017-12-16 11:07:43",
            "updated_at": "2017-12-16 11:07:43",
            "prices": {
                "data": [
                    {
                        "sale_price": "50000.00",
                        "created_at": "2017-12-16 11:07:43"
                    }
                ]
            }
        }
    ],
    "input": {
        "include": "prices"
    }
}

我想data从包含的属性中删除，它们采用这种格式，例如：

"prices": [
           {
            "sale_price": "50000.00",
            "created_at": "2017-12-16 11:07:43"
           }
          ]

即使我添加了一个序列化程序（如您在上面的代码中看到的并已注释），其内容如下，我将其用于所有其他响应并且运行良好：

class CustomArraySerializer extends ArraySerializer
{
    public function collection($resourceKey, array $data)
    {
        if ($resourceKey === FALSE) {
            return $data;
        }

        return ['success' => TRUE, 'result' => $data];
    }

    public function item($resourceKey, array $data)
    {
        if ($resourceKey === FALSE) {
            return $data;
        }

        return ['success' => TRUE, 'result' => $data];
    }
}

但是当使用它时，我得到了这个错误：

{
    "draw": 0,
    "recordsTotal": 8,
    "recordsFiltered": 0,
    "data": [],
    "error": "Exception Message:\n\nUndefined index: data"
}

什么是问题，如何解决？

4

1 回答 1

1

我正在使用 Spatie/Transformer“ spatie/laravel-fractal ”，在添加上述包后尝试使用以下内容。 

public function datatable(Request $request)
{
    return app('datatables')->of(Product::all())
    ->setTransformer(new ProductTransformer)
    ->serializeWith(new \Spatie\Fractalistic\ArraySerializer())
    ->make(TRUE);
}
于 2017-12-21T07:13:37.430 回答