在 Laravel 中，有没有办法找出是否创建了 `firstOrCreate` 或者是否找到了该行？
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In Laravel, is there a way to find out whether `firstOrCreate` created or if it found the row?
提问by Pat
In Laravel, is there a way to differentiate between firstOrCreatecreating the row and if finding out the row exists from before?
在 Laravel 中，有没有办法区分firstOrCreate创建行和之前是否发现该行存在？
Or will I have to manually do a get()first, and then create the row?
还是我必须先手动执行get()，然后再创建行？
回答by Thomas Kim
If you created the model in the current lifecycle, then the model's wasRecentlyCreatedattribute will be set to true. Otherwise, that attribute will be set to false.
如果您在当前生命周期中创建了模型，则模型的wasRecentlyCreated属性将设置为true。否则，该属性将设置为false。
In other words, lets say you have a user with the email, bob@example.
换句话说，假设您有一个用户使用电子邮件bob@example.
$user = User::firstOrCreate(['email' => '[email protected]']);
// the below will dump out false because this entry already existed
var_dump($user->wasRecentlyCreated);
Now, lets say [email protected]doesn't exist.
现在，让我们说不[email protected]存在。
$user2 = User::firstOrCreate(['email' => '[email protected]']);
// the below will dump out true because this user was created
// in the current request lifecycle
var_dump($user2->wasRecentlyCreated);
