雄辩的地方在与封闭

Question

I want to do a whereIn with a closure. Is this possible?

Normally, you would go and create it like this

return User::whereIn('id', [1, 2, 3])
            ->whereLang($channel)
            ->get();

But, what I wanted to do, is to do it with a closure - if possible. I have a database field, which has ids of users as a string (The table design is not mine, so I can't change it currently and have to work with it);

So I tried to do it like this

return User::whereIn('id', function () {
    return FooBar::whereFooId('u' . $user->id)->get(['users'])->toArray();
})
    ->whereLang($lang)
    ->get();

However, when doing that, I'm getting the error

Fatal error: Uncaught exception 'PDOException' with message 'SQLSTATE[HY000]: General error: 1096 No tables used'

I mean, in the database table I have the string with the ids stored like 1, 2, 3, 4 , so I would just need to do an explode(', ', $ids); . This would solve my problem, when I do it in two steps, I was just wondering if I can do it in one, with the closure. And if so, how?

Answer 1

You probably want to do.

return User::whereIn('id', FooBar::lists('uid'));

Assuming the user ids are stored in uid field in FooBar table