Laravel 5.3 - 基于2个匹配键合并数组？

Question

给定以下两个数组，他们如何有效地合并以产生第三个数组？ productData

$productData = 
[ 
    { 
    "product_id": 4, 
    "type": "electronic", 
    "name": "monitor", 
    "specs": { 
     "HDMI": true, 
     "VGA": false 
    } 
    }, 
    { 
    "product_id": 5, 
    "type": "electronic", 
    "name": "HDMI cable", 
    "specs": { 
     "length": "3ft" 
    } 
    }, 
    { 
    "product_id": 6, 
    "type": "kitchen", 
    "name": "spoon" 
    } 
] 

产品

$products = 
{ 
    "products": 3, 
    "per_page": 10, 
    "current_page": 1, 
    "data": [ 
    { 
     "id": 4, 
     "product_type": "electronic", 
     "product_id": 6 
    }, 
    { 
     "id": 6, 
     "type": "electronic", 
     "product_id": 5 
    }, 
    { 
     "id": 9, 
     "type": "kitchen", 
     "product_id": 4 
    } 
    ] 
} 

productsFinal（$productData合并成$products - 基于对product_id/product_id匹配组合和type/product_type）

$productsFinal = 
{ 
    "products": 3, 
    "per_page": 10, 
    "current_page": 1, 
    "data": [ 
    { 
     "id": 4, 
     "product_type": "electronic", 
     "product_id": 6, 

     // How to merge product data and wrap with "data" key 
     "data": { 
     "product_id": 6, 
     "type": "kitchen", 
     "name": "spoon" 
     } 

    }, 
    { 
     "id": 6, 
     "type": "electronic", 
     "product_id": 5, 

     // How to merge product data and wrap in "data" key 
     "data": { 
     "product_id": 5, 
     "type": "electronic", 
     "name": "HDMI cable", 
     "specs": { 
      "length": "3ft" 
     } 
     } 
    }, 
    { 
     "id": 9, 
     "type": "kitchen", 
     "product_id": 4, 

     // How to merge product data and wrap in "data" key 
     "data": { 
     "product_id": 6, 
     "type": "kitchen", 
     "name": "spoon" 
     } 
    } 
    ] 
} 

我尝试不同的东西在foreach循环的结果，但仍不能让它呈现像预期一样：

foreach($productData as $productDataItem) { 
    // when $productDataItem.product_id == $product.product_id && $productDataItem.type == $product.product_type 
    // move the matching $productDataItem object into matching $product object, wrapped in a new "data" key 
} 

Answer 1

我不知道Laravel太好。但是你可以很容易地加入您的数据对象：

<?php 
$productData = json_decode('[ 
    { 
    "product_id": 4, 
    "type": "electronic", 
    "name": "monitor", 
    "specs": { 
     "HDMI": true, 
     "VGA": false 
    } 
    }, 
    { 
    "product_id": 5, 
    "type": "electronic", 
    "name": "HDMI cable", 
    "specs": { 
     "length": "3ft" 
    } 
    }, 
    { 
    "product_id": 6, 
    "type": "kitchen", 
    "name": "spoon" 
    } 
]'); 

$products = json_decode('{ 
    "products": 3, 
    "per_page": 10, 
    "current_page": 1, 
    "data": [ 
    { 
     "id": 4, 
     "type": "electronic", 
     "product_id": 6 
    }, 
    { 
     "id": 6, 
     "type": "electronic", 
     "product_id": 5 
    }, 
    { 
     "id": 9, 
     "type": "kitchen", 
     "product_id": 4 
    } 
    ] 
}'); 

// combine both data objects 

foreach($products->data As &$p) { 
    foreach($productData As $d) { 
     if(property_exists($p, "product_id") && property_exists($d, "product_id") && property_exists($p, "type") && property_exists($d, "type")) { 
      if($p->product_id==$d->product_id && $p->type==$d->type) { 
       //$p = (object) array_merge((array) $p, (array) $d); 
       $p->data = $d; // updated answer 
       continue; 
      } 
     } 
    } 
} 

echo("<pre>"); 
echo json_encode($products, JSON_PRETTY_PRINT); 


?> 

你可以在这里测试代码：http://sandbox.onlinephpfunctions.com/code/98a50c35ee32c30f0d2be1661f7afb5895174cbe 更新：http://sandbox.onlinephpfunctions.com/code/aeebfdcf4f4db5e960260e931982570cfed19e0e

Answer 2

我建议要检查这个包dingo/api。我假设你想显示某种JSON响应。看看Transformers。你可以做这样的事情：

<?php 
namespace App\Http\Transformers; 
use App\Http\Controllers\ProductData; 
use League\Fractal\TransformerAbstract; 

class ProductsDataTransformer extends TransformerAbstract 
{ 
    /** 
    * Turn this item object into a generic array 
    * 
    * @return array 
    */ 
    public function transform(ProductData $productdata) 
    { 
     return [ 
      'id' => $productdata->id, 
      'product_type' => $productdata->product_type, 
      'product /*or data*/' => Product::find($productdata->product_id), 
     ]; 
    } 

} 

这会发现该产品通过它的ID，并期待这样的：

{ 
    "id": 4, 
    "product_type": "electronic", 
    "product" { 
    "product_id": 6, 
    "type": "kitchen", 
    "name": "spoon" 
    }, 
}, 

然后，您可以还创建一个变压器产品来满足您的规格属性护理做同样的事情。