json - 如何更新 Nodejs/MongoDB 对象数组中的字段

Question

我想要的只是将“done”字段的值更新为“true”

我正在使用nodejs进行开发

这是文档:

{
"_id" : ObjectId("5a730e55114dbc2a0455c630"),
"email" : "<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="a2c7cfc3cbcee2c5cfc3cbce8cc1cdcf" rel="noreferrer noopener nofollow">[email protected]</a>",
"password" : "12356789",
"tasks" : [ 
    {
        "title" : "new to do ",
        "description" : "new something ",
        "date" : "2018-02-07T18:16:29.469Z",
        "done" : false
    }, 
    {
        "title" : "new to d odo ",
        "description" : "dod ododoododododo",
        "date" : "2018-02-07T18:25:14.881Z",
        "done" : false
    }
]
}

Answer 1

这样的事情应该有效:

db.collectionName.update({
     "tasks.title": "new to d odo "
}, {
    $set: { "tasks.$.done": true }
})

您可以查看更多详情in the documentation .