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如何用mongoid写下面的mongodb查询?如何用mongoid实现如下查询
db.messages.find({
$or :[
{ $and : [
{"receiver_id":"[email protected]"},
{"sender_id":"[email protected]"}
]
},
{ $and : [
{"receiver_id":"[email protected]"},
{"sender_id":"[email protected]"}
]
}
]
});
做到了帮助? – abhas