Question

我在一个节点项目中有这个函数，它应该根据slug是否匹配来更新或创建一个新条目。它完美更新，因此返回的响应是正确的，但它不会插入新项目，而且我不确定我错过了什么。

MongoDB 3.0.4版（通过Homebrew安装） Mac OSX Yosemite MongoDB节点包2.0.39 僧侣1.0.1

collection.findAndModify({
      "query": { "slug": pluginslug },
      "update":
        {
            "slug"            : pluginslug,
            "name"            : response.data.name,
            "current_version" : response.data.version,
            "description"     : response.data.short_description,
            "change_log"      : response.data.sections.changelog,
            "updated"         : response.data.last_updated,
            "tested"          : response.data.tested
        },
      "upsert" :true,
      "new" : true
      }, function (err, doc) {
        if (err) {
          res.send("There was a problem adding the information to the database.");
        }
        else {
          console.log(doc)
          res.redirect("plugins/new");
        }
    });

我错过了一些非常明显的东西吗？

Answer 1

我在这里找到了正确答案：Issue with a simple mongo/monk findAndModify query

解决方案是将选项作为自己的对象提供（monk docs没有很好地记录）：

db.test.findAndModify(
{
  "query": { "slug": "1234512345" },
  "update":
    {
        "$set": 
        {
            "slug"            : "1234512345",
            "name"            : "response.data.name",
            "current_version" : "response.data.version",
            "description"     : "response.data.short_description",
            "change_log"      : "response.data.sections.changelog",
            "updated"         : "response.data.last_updated",
            "tested"          : "response.data.teste"
        }
    }
},
{
  "upsert" :true,
  "new" : true
}, 
function (err, doc) {
    if (err) {
        console.log(err);
    }
    else {
      console.log(doc);
    }
});

Answer 2

试试这个：

collection.findAndModify({
      "query": { "slug": pluginslug },
      "update":
        {
          $set:{
            "slug"            : pluginslug,
            "name"            : response.data.name,
            "current_version" : response.data.version,
            "description"     : response.data.short_description,
            "change_log"      : response.data.sections.changelog,
            "updated"         : response.data.last_updated,
            "tested"          : response.data.tested
           } 
       },
      "upsert" :true,
      "new" : true
      }, function (err, doc) {
        if (err) {
          res.send("There was a problem adding the information to the database.");
        }
        else {
          console.log(doc)
          res.redirect("plugins/new");
        }
    });

尝试运行此代码：

"use strict";
var mongojs = require("mongojs");

var collections = ["test"];

var db = mongojs('test', collections);

db.on('error', console.error.bind(console, 'connection error:'));

db.test.findAndModify({
      "query": { "slug": "1234512345" },
      "update":
        {
            "slug"            : "1234512345",
            "name"            : "response.data.name",
            "current_version" : "response.data.version",
            "description"     : "response.data.short_description",
            "change_log"      : "response.data.sections.changelog",
            "updated"         : "response.data.last_updated",
            "tested"          : "response.data.teste"
        },
      "upsert" :true,
      "new" : true
      }, function (err, doc) {
        if (err) {
            console.log(err);
        }
        else {
          console.log(doc);
        }
    });

Answer 3

这个答案可能为时已晚，但我偶然发现了这个问题并遇到了类似问题，这对我有用：

collection.findAndModify(
  { "slug": pluginslug }
  ,[]
  ,{
      $set:{
        "slug"            : pluginslug,
        "name"            : response.data.name,
        "current_version" : response.data.version,
        "description"     : response.data.short_description,
        "change_log"      : response.data.sections.changelog,
        "updated"         : response.data.last_updated,
        "tested"          : response.data.tested
       } 
   }
  ,{"upsert" :true,"new" : true}
  , function (err, doc) {
    //..something here... 
   });

findAndModify方法文档http://codepen.io/pixelacorn/pen/RROwBL?editors=0100应该有所帮助。

Answer 4

尝试下面的想法

router.post('/login/:id', jsonParser, function (req, res) {
var db = req.db;
var collection = db.get('user');
console.log(req.body);
collection.findAndModify({userid : req.params.id}, { $set: req.body } ,    {upsert : true}, function (err, result) {
    console.log(err);
    res.send(
        (err === null) ? {msg: 'success'} : {msg: 'error: ' + err}
        );
    });
});

MongoDB，Monk，findAndModify没有upserting

4 个答案: