Question

我必须根据公共密钥向集合添加列...

$usersDatas = $users->each(function ($record) use ($timeData) {
    $times = array_first($timeData, function ($value, $key) use ($record) {
            return $value['id'] === $record['id'];
    });

    $record['totalTime'] = $times['totalTime'];
    $record['spendTime'] = $times['spendTime'];
    $record['remainingTime'] = $times['remainingTime'];
    var_dump($record);
 });
 dd($usersDatas);

里面的dd（$ records）给了我正确的结果......但我无法在外面提取结果......

dd（$ records）给了我：

array:17 [▼
  "id" => 1
  "ua_id" => 351
  "grade_id" => 584
  "metier_id" => 18
  "nom" => "XXX"
  "prenom" => "XXX"
  "matricule" => "XXX"
  "email" => null
  "datenaissance" => "XXX"
  "casque" => null
  "created_at" => "2018-01-30 09:59:32"
  "updated_at" => "2018-01-30 09:59:32"
  "deleted_at" => null
  "totalTime" => 240
  "spendTime" => 0
  "remainingTime" => 0
]

虽然dd（$ usersDatas）给了我这个：

0 => array:14 [▼
    "id" => 1
    "ua_id" => 351
    "grade_id" => 584
    "metier_id" => 18
    "nom" => "XXX"
    "prenom" => "XXX"
    "matricule" => "XXX"
    "email" => null
    "datenaissance" => "XXX"
    "casque" => null
    "created_at" => "2018-01-30 09:59:32"
    "updated_at" => "2018-01-30 09:59:32"
    "deleted_at" => null
    "pivot" => array:5 [▶]

最后3个字段丢失......

"totalTime" => 240
"spendTime" => 0
"remainingTime" => 0

Answer 1

您必须使用$collection->map(function($item) { ... })：

// we will simply override $users here with an updated collection
$users = $users->map(function ($record) use ($timeData) {
    $times = array_first($timeData, function ($value, $key) use ($record) {
        return $value['id'] === $record['id'];
    });

    $record['totalTime'] = $times['totalTime'];
    $record['spendTime'] = $times['spendTime'];
    $record['remainingTime'] = $times['remainingTime'];
    var_dump($record);
    return $record;
});
dd($users);

$collection->each(function($item) { ... })确实正在为每个项执行函数，但不修改集合。此方法可用作foreach ($collection as $item) { ... }的替代，例如当回调函数function($item) { ... }被定义在代码中的其他地方时。

从Laravel方法中提取值

1 个答案: