具有模型聊天:
var schema = mongoose.Schema({
userSend: {type: ObjectId, ref: 'User' },
userReceive: {type: ObjectId, ref: 'User' },
message : {type: 'String', require: true},
status: {type: 'Boolean', default: true},
time: {type: 'Date', default: Date.now}
});
module.exports = mongoose.model('Chat', schema);
请!帮助我查询以获取彼此之间的最后一条消息。与Facebook对话相同。
它是样本数据
{_id: '156478', msg: 'Hello lam', userSend: 'ZungX', userReceive:'Lam', timestamp: '2015-10-25T18:02:41.400Z'}
{_id: '586456', msg: 'hi My', userSend: 'Duc', userReceive:'My', timestamp: '2015-10-25T19:05:00.400Z'}
{_id: '254566', msg: 'Hello Duc', userSend: 'ZungX', userReceive:'Duc', timestamp: '2015-10-26T13:06:41.400Z'}
{_id: '456899', msg: 'hi ZungX last', userSend: 'Duc', userReceive:'ZungX', timestamp: '2015-10-26T17:02:41.400Z'}
{_id: '987556', msg: 'Hello ZungX', userSend: 'Lam', userReceive:'ZungX', timestamp: '2015-10-26T20:01:41.400Z'}
{_id: '456878', msg: 'Chao Lam', userSend: 'ZungX', userReceive:'Lam', timestamp: '2015-10-26T21:54:21.400Z'}
Now, i want get list conversation of user 'ZungX'
我想要这个结果:
[
{
msg: 'hi ZungX last',
withUser: 'Duc', //it's userSend
timestamp: '2015-10-26T17:02:41.400Z'
},
{
msg: 'Chao Lam',
withUser: 'Lam', //it's userReceive
timestamp: '2015-10-26T21:54:21.400Z'
}
]
我有相同的搜索问题,但我不理解
谢谢