Question

我似乎无法在我的生命中更新/添加嵌入文档数组到父文档。

请原谅冗长的剧本，但如果我没有包含所有代码，它就不会帮助我或者可以提供帮助。随意提供任何其他Node建议。

我已经尝试了数百种变体，并且已经查看了所有可能的资源以使其工作，或者做类似的事情，但现在几个小时都没有成功。我非常感谢任何帮助这项工作。如果我错过了什么，请告诉我。

这个答案：How to update embedded document in mongoose?最接近帮助我（因为我已经拥有公司/实例）但是唉，我还没有让它发挥作用。

感谢您的帮助！

Node --version v0.10.21        
mongodb@1.3.19
    │ ├── bson@0.2.2
    │ └── kerberos@0.0.3
    ├── mongoose@3.6.20


    var http = require('http');
    var db = require('../config/db') //Connects to DB successfully
    var async = require('async');
    var request = require('request');
    var download = require('./download');
    request = require('request');
    var cheerio = require('cheerio');
    var mongoose = require('mongoose'),
        Schema = mongoose.Schema,
        ObjectId = Schema.ObjectId;

    var filingSchema = mongoose.Schema({
        name: String,
        dateFiled: String,
        formName: String,
        XBRLREF: String,
        filingHREF: String,
        title: String,
        type: String
    });

    Filing = mongoose.model('Filing', filingSchema);

    var companySchema = mongoose.Schema({
        symbol: String,
        name: String,
        secURL: String,
        mc: String,
        filings: [filingSchema],
        irLink: String
    });

    Company = mongoose.model('Company', companySchema);

    function getCompanies(callback) {
        Company.find({
            cik: {
                $ne: ""
            }
        }, function(err, companies) {
            if (err) {
                console.log("error getting companies " + err)
            }
            // console.log(companies.length);
            callback(null, companies);
        })
    };

    function createURLs(companies, callback) {
        // create a URL for querying the SEC website for the main, first company page with 100 filings of type 10 only
        companies.forEach(function(company) {
            if (company.symbol) {
                // console.log("company.nasdaqSymbol is: " + company.nasdaqSymbol);
                // create url to download
                cik = company.cik
                // If you try to run this code you can use 'AMZN' in place of the cik below (most other symbols too)
                company.link = 'http://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=' + cik + '&type=10&owner=exclude&count=100&output=xml'
            }
        });
        callback(null, companies);
    }

    function downloadSEC(companies, callback) {
        // iterate through each URL and query the SEC website - get the results and return page as data
        companies.forEach(function(company) {
            download(company.link, function(data) {
                if (data) {
                    // Call separate function that will grab the elements we want from SEC meta-page
                    // Example data/response page: view-source:http://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=AMZN&type=&dateb=&owner=exclude&count=100&output=xml
                    getLinks(data, company);
                }
            });
        });
    };

    function getLinks(data, company) {
        var $ = cheerio.load(data);
        var filings = [];
        $('filing').each(function() {
            // Have tried many versions of the below including var filing = new Filing etc....  also company.filings.push(filing) (throws: type cast error)
            // Example data: view-source:http://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=AMZN&type=&dateb=&owner=exclude&count=100&output=xml
            var filing = {
                dateFiled: $(this).find("dateFiled").text(),
                xbrlRef: $(this).find('XBRLREF').text(),
                formName: $(this).find('formName').text(),
                type: $(this).find('type').text(),
                filingHREF: $(this).find('filingHREF').text()
            };
            filings.push(filing);
        });
        update(company, filings);
    }

    function update(company, filings) {
        console.log('company_id is: ' + company._id);
        // Have tried seemingly thousands of combinations of C[c]ompany.save/update etc. below
        company.save({
            _id: company._id
        }, {
            filings: filings
        }, function(err, company) {
            if (err) {
                console.log("error updating filings: " + err);
            }
            console.log('company is: ' + company);
        });
    }

    async.waterfall([getCompanies, createURLs, downloadSEC, getLinks]);

Answer 1

我已经将未包含的代码部分（数据库和下载）整合在一起，我认为我已经完成了所有工作。

我使用的是mongoose 3.8和节点0.10，但我认为它仍然适合你。你可以在这里做几件事，但这会发出mongodb findAndModify

function update(company, filings) {
    console.log('company_id is: ' + company._id);

    Company.findByIdAndUpdate(company._id, {
        filings: filings
    }, function(err, company) {
        if (err) {
            console.log("error updating filings: " + err);
        }
        console.log('company is: ' + company);
    });
}

我还注意到async.waterfall不需要getLinks函数，因为你没有使用回调。

更新嵌入式文件Mongoose - 现有实例保存/更新等

1 个答案: