在Laravel中，有没有一种方法可以确定是否创建了"firstOrCreate"或是否找到了该行? [英] In Laravel, is there a way to find out whether `firstOrCreate` created or if it found the row?
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问题描述
在Laravel中，有没有一种方法可以区分firstOrCreate创建行和查找行是否存在?
In Laravel, is there a way to differentiate between firstOrCreate creating the row and if finding out the row exists from before?
还是我必须先手动执行get()，然后创建行?
Or will I have to manually do a get() first, and then create the row?
推荐答案
如果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.
If you created the model in the current lifecycle, then the model's wasRecentlyCreated attribute will be set to true. Otherwise, that attribute will be set to false.
换句话说，假设您有一个使用电子邮件bob@example的用户.
In other words, lets say you have a user with the email, bob@example.
$user = User::firstOrCreate(['email' => 'bob@example.com']);
// the below will dump out false because this entry already existed
var_dump($user->wasRecentlyCreated);
现在，可以说new@example.com不存在.
$user2 = User::firstOrCreate(['email' => 'new@example.com']);
// the below will dump out true because this user was created
// in the current request lifecycle
var_dump($user2->wasRecentlyCreated);
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