我有一个像这样的json文件,
{
"unique_id_001":{
"price_1":264000,
"price_2":2178000,
"price_3":3168000,
"price_6":1089000,
"price_7":3168000
},
"unique_id_002":{
"price_1":264000,
"price_2":2178000,
"price_3":3168000,
"price_6":1089000,
"price_7":3168000
},
"unique_id_003":{
"price_1":264000,
"price_2":2178000,
"price_3":3168000,
"price_6":1089000,
"price_7":3168000
}
}
我将其转换为集合,并希望将这些price_x设置为另一个集合。
public static function getOldPrices()
{
$storagePath = storage_path(self::PATH);
$file = File::get($storagePath);
$data = json_decode($file, true);
$collection = \App\Price::hydrate($data);
$oldPrices = $collection->flatten();
return $oldPrices;
}
public static function all()
{
$prices = \App\Price::all();
$old_prices = self::getOldPrices();
foreach ($prices as $price) {
foreach ($old_prices as $old_price) { // is there another way so I can remove this loop?
if ($price->id === $old_price->id) {
$price->price_1 = $old_price->price_1;
$price->price_2 = $old_price->price_2;
$price->price_3 = $old_price->price_3;
$price->price_6 = $old_price->price_6;
$price->price_7 = $old_price->price_7;
}
}
}
return $prices;
}
此代码有效,并且可能以$ prices更改每个价格的值。但是我想知道是否还有其他方法,因为我在这段代码中使用了两个foreach循环,我认为这样做不好。
答案 0 :(得分:0)
我有另一种使用map()
这是我更新的代码
$prices = $prices->map(function ($price) use ($oldPrices) {
if ($oldPrice = $oldPrices->firstWhere('id', $price->id)) {
$price->price_1 = $oldPrice->price_1;
$price->price_2 = $oldPrice->price_2;
$price->price_3 = $oldPrice->price_3;
$price->price_6 = $oldPrice->price_6;
$price->price_7 = $oldPrice->price_7;
}
return $price;
});