如何获取 Laravel 集合中元素的索引
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时间：2020-09-14 18:11:47 来源:igfitidea点击:
How to get index of element in Laravel collection
提问by user2916349
How to retrieve the index of an element in a collection ? My code :
如何检索集合中元素的索引？我的代码：
$users = User::has('posts')->withCount('posts')->orderBy('posts_count')->take(50)->get();
if($users->contains(Auth::id())){
//get the index of auth user id
}
Thank's for help
感谢帮助
回答by newUserName02
You can use the collection search()method: https://laravel.com/docs/5.7/collections#method-search
可以使用采集search()方法：https: //laravel.com/docs/5.7/collections#method-search
$users = User::has('posts')->withCount('posts')->orderBy('posts_count')->take(50)->get();
$userIndex = $users->search(function($user) {
return $user->id === Auth::id();
});
Just be careful, because the index might be 0:
请小心，因为索引可能为 0：
// DON'T do this
if($userIndex) {
// this will get skipped if the user is the first one in the collection
}
// Do this instead
if($userIndex !== false) {
// this will work
}
