为什么要保存ObjectId('key')而不是mongodb中的值? [英] Why do I save the ObjectId('key'), instead of the values in my mongodb?

问题描述

我正在将Angular 7与node.js，express和猫鼬一起使用

I'm using Angular 7 with node.js, express and mongoose

通过猫鼬将对象添加到mongodb时遇到问题，它仅保存"_id":ObjectId('randomID')而不是我想要的值.

I have a problem when adding objects to my mongodb via mongoose, it saves only "_id": ObjectId('randomID') instead of the values i want.

我正在尝试使用嵌套数组将值添加到我的集合中的现有文档中.

I'm trying to add values to an existing document in my collection with nested arrays.

更准确地说:有些客户具有客户编号，客户名称和域. 域应是具有域的数组. 域具有名称值和另外两个数组(称为"in"和"out") 这两个数组都包含带有节点和链接的图数组. 节点具有3个值(id，标签，描述)，链接也具有3个值(源，目标，标签)

To be more precise: there are customers with a customer number, customer name and domains. Domains shall be an array with a domain. A domain has a name value and two more arrays (called "in" & "out") both arrays contain a graph array with nodes and links. nodes have 3 values (id, label, description) and links have also 3 values (source, target, label)

我遇到的第一个问题是，我无法将新域添加到域数组中

First Problem I have, is that I cant add new domain to my domains array

我不明白我在做什么错??

I don't understand what am I am doing wrong??

或者在嵌套数组中插入和/或更新嵌套数组的最佳实践是什么?

Or what is best practice to insert and/or update nested arrays inside nested arrays?

我试图理解，为什么我只保存不带任何值的ObjectId()，所以链接的问题对我不起作用.

edit: I try to understand, why am I saving only the ObjectId() with no values, linked question doesn't work for me.

这是我想要在数据库中显示的示例:

here is an Example of what i want in my db:

{
"_id" : ObjectId("5c76a093aac6fa3f140a5672"),
"KdNr" : "10004", 
"Kundenname" : "Customer GmbH",
"__v" : 0,
 "domains" : [ {
  "domain" : "testB.de",
   "in" : [ {
    "content" : "New Graph B",
    "graph" : { ... } } ],
   "out" : [ {
    "content" : "Another new Graph B",
    "graph" : { ... } } ]
  }, [ {
  "domain" : "testA.de",
   "in" : [ {
    "content" : "New Graph A",
    "graph" : { ... } } ],
   "out" : [ {
    "content" : "Another new Graph A",
    "graph" : { ... } } ]
   } ]
 }

这是我得到的(不是我想要的)示例:

here is an Example of what i get (not what I want):

{
"_id" : ObjectId("5c76a093aac6fa3f140a5672"),
"KdNr" : "10004", 
"Kundenname" : "Customer GmbH",
"__v" : 0,
 "domains" : [ {
   { "_id" : ObjectId("5c7f86ad42d63141fc921d04") },
   { "_id" : ObjectId("5c655c828be0b2b295aa126f") }
 ] }

这是我的架构:

const mongoose = require('mongoose');

const graphSchema = mongoose.Schema({
  graph: {
    nodes: [{
      id: { type: String, required: true, unique: true },
      label: { type: String, required: true },
      description: { type: String }
    }],
    links: [{
      source: { type: String, required: true },
      target: { type: String, required: true },
      label: { type: String }
    }]
  }
});

const domainSchema = mongoose.Schema({
  domain: {
    name: { type: String, unique: true, required: true },
    in: {
      content: { type: String },
      graphSchema
    },
    out: {
      content: { type: String },
      graphSchema
    }
  }
});

const diagramSchema = mongoose.Schema({
  KdNr: { type: String, required: true, index: true, unique: true },
  Kundenname: { type: String, required: true },
  domains: [{
    domainSchema
  }]
});

module.exports = mongoose.model('Diagram', diagramSchema);

这是我的domains-routes.js:

here is my domains-routes.js:

// core Modules
const express = require('express');

// own modules
const Diagram = require('../models/diagrams');

const router = express.Router();

// add Domain to Diagram
router.put('/:KdNr', (req, res, next) => {

  console.log(req.body.domain);
  const data = {
    domains : [{
      domain: req.body.domain,
      in: [{
        content : "New Graph",
        graph : {}
      }],
      out: [{
        content : "New Graph",
        graph : {}
      }]
    }]
  }

  Diagram.updateOne(
    { KdNr: req.params.KdNr },
    { $push: data }
  ).then(result => {
    if(result) {
      console.log('Diagram found in database:');
      console.log(result);
      res.status(200).json({ message: 'Diagram saved' });
    } else {
      res.status(404).json({ message: 'Diagram for customer: '
       + req.params.KdNr + 'not found!'})
    }
  })
})

module.exports = router;

推荐答案

在

Diagram.updateOne

{ $push:{"domains": data }}

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