Question

我正在学习nodeJS，并且正在开发一个预算应用程序，其中使用mongodb存储数据。

我正在尝试基于Node + Express + Mongo创建一个CRUD应用程序。我觉得我设计的方案对于该项目不是一个好的解决方案。我想将所有transactionInfo保留在一个位置，并将其链接到statmentInfo，这样我就可以轻松地为该节(blingBlaw.transactionInfo)编制索引或进行修改。我也尝试以这种方式创建模式-但遇到了类似的问题。

blingBlaw.statmentData[0].statmetInfo = [{}]
blingBlaw.statmentData[0].transactionInfo = [{}]

我觉得这是不允许我更新嵌套的transactionInfo的问题

这是mongo查询的图片，需要使用此方法来修改带点符号的嵌套集合

这是我得到的消息，我不确定这个错误是否意味着，我遍历数组以修改不匹配项或其他具有我给出的值的方式。

{ n: 0, nModified: 0, ok: 1 }

我想出一个添加，修改和删除嵌套文档的解决方案。可能是我的设计难以遍历对象数组。

我正在尝试存储CSV中的数据->将其转换为数组，然后将其插入 transactionInfo 。

这就是我添加 transactionInfo 的方式（添加就可以了）

    // Upload object - setting up for Statement and transaction
    let statementInfo = {
      statement_id: req.session.statementInfo.statement_id,
      statementName: req.session.statementInfo.statementName,
      statementType: req.session.statementInfo.statementType,
      statementDate: req.session.statementInfo.statementDate,
      statementDesc: req.session.statementInfo.statementDesc,
      statementFileInfo: req.session.statementInfo.statementFileInfo,
      statementCreated: req.session.statementInfo.statementCreated,
      statementModified: req.session.statementInfo.statementModified,
      statementModifiedtUser: req.session.statementInfo.statementModifiedtUser,
    }
    let transactionInfo = {};
    for (let i in req.body.modulesTransId) {
      transactionInfo[i] = {
        transactionId: ObjectId(),
        transDate: req.body.modulesTransDate[i],
        transDesc: req.body.modulesTransDesc[i],
        transWithdraw: req.body.modulesTransWithdraw[i],
        transDeposite: req.body.modulesTransDeposite[i],
        transBalance: req.body.modulesTransBalance[i],
        transCat: req.body.modulesCatName[i],
        transComment: req.body.modulesTransComment[i],
        transType: req.body.modulesTransType[i],
        statementId: req.session.statementInfo.statement_id,
        transactiontModified: "",
        transactiontModifiedUser: ""
      }
    };
    // set validation Data
    let valData = {
      "_id": req.session.userId
    }
    // request DB conections
    const db = req.db;
    const collectionBling = db.get(collectionBlingBlaw);
    // mongo push the new category
    collectionBling.update(valData, {
      $push: {
        "statementInfo": statementInfo,
        "transactionInfo": transactionInfo
      }
    }, {
      upsert: true
    }, function(err, results) {
      if (err) { // If it failed, return error
        console.log("err: " + err);
        flashData.pageMesage = "Error adding Statement";
        flashData.bgColor = "danger";
        flashData.info = err;
        req.flash('flashData', flashData);
        res.redirect('/statement');
      } else { // else add category and redirect to Category Dashboard
        console.log("Category added: " + results);
        flashData.pageMesage = "Statement been added!";
        flashData.bgColor = "success";
        flashData.info = results;
        req.flash('flashData', flashData);
        res.redirect('/statement');
      }
    });

这就是我更新 transactionInfo

的方式

const db = req.db;
const collectionBling = db.get(collectionBlingBlaw);
collectionBling.update({
  _id: ObjectId(req.session.userId),
  "transactionInfo.transactionId": ObjectId(req.body.transTransId),
  "transactionInfo.transDate": req.body.transTransDate,
}, {
  $set: {
    "transactionInfo.$.transCat": req.body.transTransCat,
    "transactionInfo.$.transComment": req.body.transTransComment,
    "transactionInfo.$.transactiontModified": req.body.transTransComment,
    "transactionInfo.$.transactiontModifiedUser": moment().format('MMMM Do YYYY, h:mm:ss a')
  }
}, function(err, results) {
  if (err) {
    flashData.pageMesage = "Error updating" + req.body.transTransDesc;
    flashData.bgColor = "danger";
    flashData.info = err;
    req.flash('flashData', flashData);
    res.redirect('/statement');
  } else {
    console.log(results);
    flashData.pageMesage = "Update been good: " + req.body.transTransDesc;
    flashData.bgColor = "success";
    flashData.info = results;
    req.flash('flashData', flashData);
    res.redirect('/statement');
  }
})

这就是我删除声明的方式

collection.update({
  "statementInfo.statementData.statement_id": ObjectId('5be32b29ee4c322140969fd5')
}, {
  $pull: {
    "statementInfo.$.statementData": {
      'statement_id': ObjectId('5be32b29ee4c322140969fd5')
    }
  }
}, function(err, results) {
  if (err) { // if err throw err
    console.log("results: " + JSON.stringify(err));
    flashData.pageMesage = "Error removing statement" + JSON.stringify(err.message);
    flashData.bgColor = "danger";
    flashData.info = err;
    req.flash('flashData', flashData);
    res.redirect('/statement');
  }
  if (results) {
    console.log("results: " + JSON.stringify(results));
    flashData.pageMesage = "Statement been removed: " + req.body.statementId;
    flashData.bgColor = "success";
    flashData.info = results;
    req.flash('flashData', flashData);
    res.redirect('/statement');
  }
});

这是我为该项目设计的方案。

  // set newData to insert
  const user_id = ObjectId();
  const statement_id = ObjectId();
  const transactionId_id = ObjectId();
  const blingBlaw = {
    _id: user_id,
    userInfo: {
      userId: user_id,
      userFannyPack: req.body.fannyPack,
      userName: req.body.username,
      userPwd: req.body.pwd,
      userEmil: "",
      userGrup: "",
      userCreated: moment().format('MMMM Do YYYY, h:mm:ss a'),
      userModify: ""
    },
    statementInfo: [{
      statement_id: statement_id,
      statementName: "",
      statementType: "",
      statementDate: "",
      statementDesc: "",
      statementFileInfo: "",
      statementCreated: moment().format('MMMM Do YYYY, h:mm:ss a'),
      statementModified: "",
      statementModifiedtUser: ""
    }],
    transactionInfo: [{
      transactionId: transactionId_id,
      transactionDate: "",
      transactionDesc: "",
      transactionWithdraw: "",
      transactionDeposite: "",
      transactionBalance: "",
      transactiontModified: "",
      transactiontModifiedUser: "",
      statement_id: statement_id
    }],
    categoryInfo: [{
      _id: "",
      catName: "",
      catParent: "",
      catCreate: moment().format('MMMM Do YYYY, h:mm:ss a'),
      catModify: ""
    }]
  }

Mongo-更新记录的嵌套数组和对象

0 个答案: