Laravel 4.2 - 使用 ::firstOrCreate 并确定实际发生了什么?

Laravel 4.2 - using ::firstOrCreate and determining what actually happened?

在 Laravel 4.2 中使用 Model::firstOrCreate 时,有没有办法知道发生了什么,先发生还是创建?

让我解释一下,我的理解是,使用 ::firstOrCreate 创建一条记录,如果它不存在或返回包含参数数组数据的记录值。

所以如果我有这样的东西:

// Auth::user()->id; returns 7

$person = Persons::firstOrCreate(array(
    'approver' => 123,
    'receiver' => Auth::user()->id,
    'plan' => 'gold',
));

我有这些记录

  approver | receiver  |  plan
____________________________________
    123    |     7     |  silver
____________________________________
    128    |     7     |  gold
____________________________________
    123    |     7     |  platinum
____________________________________

然后将创建一个新记录

  approver | receiver  |  plan
____________________________________
    123    |     7     |  silver
____________________________________
    128    |     7     |  gold
____________________________________
    123    |     7     |  platinum
____________________________________
    123    |     7     |  gold
____________________________________

如果我再次运行上面的代码,那么新值将不会被创建,这条记录将被返回

  approver | receiver  |  plan
____________________________________

    123    |     7     |  gold
____________________________________

但是如果我的代码是这样的

$person = Persons::firstOrCreate(array(
    'approver' => 123,
    'receiver' => Auth::user()->id
));

将返回这些记录

  approver | receiver  |  plan
____________________________________
    123    |     7     |  silver
____________________________________
    123    |     7     |  platinum
____________________________________
    123    |     7     |  gold
____________________________________

如果我对 ::firstOrCreate 的理解不正确,请帮助我更好地理解它。

正如我提到的,我很想知道是否有一种方法可以确定是否发生了新记录的创建?

该模型有 wasRecentlyCreated 属性:

$person = Persons::firstOrCreate([
    'approver' => 123,
    'receiver' => auth()->id(),
    'plan' => 'gold',
]);

if ($person->wasRecentlyCreated) {
    // $person was created
} else {
    // $person was fetched
}

对于旧版本的 Laravel,您可以使用 firstOrNew 实现您想要的:

$person = Persons::firstOrNew([
    'approver' => 123,
    'receiver' => Auth::user()->id,
    'plan' => 'gold',
]);

if (! $person->id) {
    $person->save();

    // $person was created...
} else {
    // $person was fetched...
}