使用 mongoose 和 API 填充 Mongo 数据库

Question

因此，对于个人项目，我正在尝试制作会议及其论文的数据库。为此，我正在使用 Mongo DB 社区服务器、node.js、mongoose 和 Elsevier Scopus API。到目前为止，我已经制作了自己的 JSON 文件，其中包含每个会议的所有相关信息，但是一旦我试图用每年版本的相关论文填充每个会议，我就无法正确检索 JSON 从 Scopus 检索到的文件。

我的数据库的架构如下：

var edition_papers = new mongoose.Schema({
    title: String,
    author: String,
    abstract: String
});

const papers = mongoose.model('papers', edition_papers);

// will each hold a reference to a multiple document from the papers collection
var conference_edition = new mongoose.Schema({
    edition: Number,
    papers: {
        type: mongoose.Schema.Types.ObjectId,
        ref: 'papers'
    }
});

const edition = mongoose.model('editions', conference_edition);


const ConferenceSchema = new Schema({
    acronym : String,
    name : String,
    area : String,
    subarea : String, 
    location : String,  
    year: {
        type: mongoose.Schema.Types.ObjectId,
        ref: 'editions'
    }
});

对于我的填充函数：

function apiCall(conf_name, year) {
    var url = 'https://api.elsevier.com/content/search/scopus?query=CONFNAME(' + conf_name + ')%20AND%20DOCTYPE(cp)%20AND%20SRCTYPE(p)%20AND%20PUBYEAR%20%3D%20' + year + '&apiKey=' + key;
    fetch(url).then(response => response.json()).then(data => {
    console.log(data)
    })
}

function getPapers(year, conf_name) {
    //var json_papers = apiCall(conf_name, year);
    var temp = [];
    for (let i = 0; i < apiCall(conf_name, year).search-results.totalResults; i++) {
        temp[i] = new Papers({
            title: json_papers.entry[i].title,
            author: json_papers.entry[i].creator,
        })
    }

    return temp;
}

function getEdition(conf_name) {
    var years = [2020, 2019, 2018, 2017, 2016, 2015];
    var temp = [];
    for (var i = 0; i < years.length; i++) {
        temp[i] = new Editions({
            editions: years[i],
            papers: getPapers(years[i], conf_name),
        });
    }

    return temp;
}

function createNewConf(conferences) {
    var temp;
    temp = new Conference({
        acronym: conferences.acronym,
        fullname: conferences.fullname,
        area: conferences.area,
        subarea: conferences.subarea,
        location: conferences.location,
        year: getEdition(conferences.acronym),
    });

    return temp;
}

我的问题是，虽然我能够从 API 正确获取 JSON 文档，但文档看起来像下面这样，我不知道如何使用“。”在它的变量上并有效地循环本文档的条目以从论文中检索相关变量。

{
  'search-results': {
    'opensearch:totalResults': '62',
    'opensearch:startIndex': '0',
    'opensearch:itemsPerPage': '25',
    'opensearch:Query': {
      '@role': 'request',
      '@searchTerms': 'CONFNAME(AAAI) AND DOCTYPE(cp) AND SRCTYPE(p) AND PUBYEAR = 2020',
      '@startPage': '0'
    },
    link: [ [Object], [Object], [Object], [Object] ],
    entry: [
      [Object], [Object], [Object],
      [Object], [Object], [Object],
      [Object], [Object], [Object],
      [Object], [Object], [Object],
      [Object], [Object], [Object],
      [Object], [Object], [Object],
      [Object], [Object], [Object],
      [Object], [Object], [Object],
      [Object]
    ]
  }
}

//within each object of the entry array is the following :

"prism:url": "https://api.elsevier.com/content/abstract/scopus_id/85081235453",
        "dc:identifier": "SCOPUS_ID:85081235453",
        "eid": "2-s2.0-85081235453",
        "dc:title": "Structural brain changes with lifetime trauma and re-experiencing symptoms is 5-HTTLPR genotype-dependent",
        "dc:creator": "Ancelin M.L.",
        "prism:publicationName": "European Journal of Psychotraumatology",
        "prism:issn": "20008198",
        "prism:eIssn": "20008066",
        "prism:volume": "11",
        "prism:issueIdentifier": "1",
        "prism:pageRange": null,
        "prism:coverDate": "2020-12-31",
        "prism:coverDisplayDate": "31 December 2020",
        "prism:doi": "10.1080/20008198.2020.1733247",
        "citedby-count": "0",

我尝试了各种方法，但我最大的问题是 ':' 不允许我使用 json_papers.entries。[在此处插入变量] 符号。

有人有我的问题的相关文档或解决方案吗？

非常感谢！马蒂厄·博纳多

Answer 1

您可以尝试使用方括号表示法访问 json 数据。

在您的示例中，您尝试以点表示法访问：

json_papers.entries.[insert variable here ] notation

要使用方括号表示法，您只需这样做：

json_papers.entries[insert variable here ] notation

举个例子，让你的 json:

const a = {
        "prism:url": "https://api.elsevier.com/content/abstract/scopus_id/85081235453",
        "dc:identifier": "SCOPUS_ID:85081235453",
        "eid": "2-s2.0-85081235453",
        "dc:title": "Structural brain changes with lifetime trauma and re-experiencing symptoms is 5-HTTLPR genotype-dependent",
        "dc:creator": "Ancelin M.L.",
        "prism:publicationName": "European Journal of Psychotraumatology",
        "prism:issn": "20008198",
        "prism:eIssn": "20008066",
        "prism:volume": "11",
        "prism:issueIdentifier": "1",
        "prism:pageRange": null,
        "prism:coverDate": "2020-12-31",
        "prism:coverDisplayDate": "31 December 2020",
        "prism:doi": "10.1080/20008198.2020.1733247",
        "citedby-count": "0"}

我能够通过以下方式访问 json 数据：

a["prism:url"] //"https://api.elsevier.com/content/abstract/scopus_id/85081235453"

使用 mongoose 和 API 填充 Mongo 数据库

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