Mongoose 更新嵌入文档

Question

id: { type: String, required: true, unique: true, default: uuid.v1 },
    description: { type: String },
    period: [{
        id: { type: String, default: uuid.v1 },
        start: { type: Date, default: Date.now },
        due: { type: Date },
        dueWarnByHours: { type: Number, integer: true },
        newnessByHours: { type: Number, integer: true },
    }],

我有一个像这样的嵌入式 mongodb 数据库文档。我尝试像下面这样更新它

WorkItem.update({ description: req.body.description},{period.rank: 3}, function(err, req) {
        if (err) return console.error(err);
        console.dir(reqWorkItemId + "Successfully removed the workItem from the database");
    });

但是如何更新嵌入的子部分期间不起作用->使用猫鼬排名

Answer 1

WorkItem.update({ id: d }, { description: req.body.description, $set: { 'status.0.rank': req.body.status.rank } },
        function(err, numRowsAffected, raw) {
            if (err) return console.error(err);
            if (numRowsAffected > 0) {
                console.dir("reqWorkItemId" + "Successfully removed the workItem from the database");
            } else {
                console.log("fail");
                //res.send(500, { error: 'carrier not updated' });
            }
        });

这个适合我

Answer 2

下面的代码会帮助你：-

var findQuery = { description: req.body.description, 'period.id' : someId};
WorkItem.update(findQuery,{$set:{'period.$.rank': 3}}, function(err, req) {
    if (err) return console.error(err);
    console.dir(reqWorkItemId + "Successfully removed the workItem from the database");
});

或

 WorkItem.update(findQuery,{$set:{'period.$.rank': 3}}, function(err, req) {
    if (err) return console.error(err);
    console.dir(reqWorkItemId + "Successfully removed the workItem from the database");
});

注意：- 这只会更新周期数组的第一个对象。