SQL 查询到 Eloquent 的转换

Question

如何将下面的 SQL 语句转换为 Eloquent？

SELECT * FROM `messages` WHERE (`to`=$myID AND `from`=$guestID) OR (`to`=$guestID AND `from`=$myID)

Answer 1

对parameter grouping 使用where 和orWhere 闭包：

Message::where(function($q) use($myId, $guestId) {
    $q->where('to', $myId)->where('from', $guestId);
})
->orWhere(function($q) use($myId, $guestId) {
    $q->where('to', $guestId)->where('from', $myId);
})
->get();