我的数据库中有以下对象：
{
"_id": "fTgR2YtHiZBzzqF6J",
"following": [
{
"user": {
"_id": "S4dLHRJiuHoyAp26q",
"fb": {
"id": "100006681067911",
"name": "Helen Amffhajfgiaa Laubergskymanwitzescusonsteinsen"
}
},
"date": "2013-10-01T17:25:50.305Z"
},
{
"user": {
"_id": "MAyxz4Yk5F9vh9RRy",
"fb": {
"id": "100006719587007",
"name": "Mary Amfgaiehgkg Smithman"
}
},
"date": "2013-10-11T10:47:58.898Z"
}
]
}
现在我想删除
{
"user": {
"_id": "MAyxz4Yk5F9vh9RRy",
"fb": {
"id": "100006719587007",
"name": "Mary Amfgaiehgkg Smithman"
}
},
"date": "2013-10-11T10:47:58.898Z"
}
数组中名为“following”的子文档。
我执行此操作的查询如下所示：
Collection.update({"_id":"fTgR2YtHiZBzzqF6J"},
{
"$pull": {
"following": {
"user": {
"_id": "MAyxz4Yk5F9vh9RRy"
}
}
}
});
但什么也没发生！
有人可以指出我的错误吗？
我的问题是：我必须 $pull 整个对象：
Collection.update({"_id":"fTgR2YtHiZBzzqF6J"},
{
"$pull": {
"following": {
"user": {
"_id": "MAyxz4Yk5F9vh9RRy",
"fb": {
"id": "100006719587007",
"name": "Mary Amfgaiehgkg Smithman"
}
},
"date": "2013-10-11T10:47:58.898Z"
}
}
}
});
and can NOT就这样称呼：
Collection.update({"_id":"fTgR2YtHiZBzzqF6J"},
{
"$pull": {
"following": {
"user": {
"_id": "MAyxz4Yk5F9vh9RRy"
}
}
}
});
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