Laravel 5.3 - 基於2個匹配鍵合併數組？

Question

給定以下兩個數組，他們如何有效地合併以產生第三個數組？ 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" 
    } 
] 

產品

$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（$productData合併成$products - 基於對product_id/product_id匹配組合和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" 
     } 
    } 
    ] 
} 

我嘗試不同的東西在foreach循環的結果，但仍不能讓它呈現像預期一樣：

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數據對象：

<?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); 


?> 

你可以在這裏測試代碼：http://sandbox.onlinephpfunctions.com/code/98a50c35ee32c30f0d2be1661f7afb5895174cbe 更新：http://sandbox.onlinephpfunctions.com/code/aeebfdcf4f4db5e960260e931982570cfed19e0e

Answer 2

我建議要檢查這個包dingo/api。我假設你想顯示某種JSON響應。看看Transformers。你可以做這樣的事情：

<?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), 
     ]; 
    } 

} 

這會發現該產品通過它的ID，並期待這樣的：

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

然後，您可以還創建一個變壓器產品來滿足您的規格屬性護理做同樣的事情。