1

我关注了http://docs.apollostack.com/apollo-server/guide.html/和这个视频，并想尝试将它连接到 www.mlab.com 上的 db。该项目正在连接到 mlab 和 graphiql，但是当我在 graphiql 中运行查询时，我的查询得到了 null/undefined 值。

这是 schema.js

const typeDefinitions = `
type Biz {
 name: String
 address: String
}

type Query {
 biz(name: String, address: String): Biz
}

schema {
 query: Query
}
`;

export default [typeDefinitions];

这是 connector.js：

// businesses in mongo DB
    const MONGOLAB_URI = 'mongodb://user:password@ds064278.mlab.com:64278/klik-mongodb';
    const mongo = Mongoose.connect(MONGOLAB_URI, function (err, res) {
     if (err) {
       console.log ('ERROR connecting to: ' + MONGOLAB_URI + '. ' + err);
     } else {
       console.log ( 'Succeeded connected to: ' + MONGOLAB_URI );
     }
    });

    const BizSchema = Mongoose.Schema({
     _id: Object,
     address: String,
     city: String,
     country: String,
     heading: String,
     headingid: Number,
     img_url: String,
     name: String,
     objectId: String,
     phonenumber1: String,
     website: String,
     latitude: Number,
     longitude: Number,
    });

    const Biz = Mongoose.model('bizs', BizSchema);

    export { Biz };

这是 resolvers.js：

import { Biz } from './connectors';

    const resolvers = {
     Query: {
       biz(_, { name, address }) {
         return Biz.find({ where: name, address });
       },
     },
    };

    export default resolvers;

这是我的 mlab 对象的示例：

{
               "_id": {
                   "$oid": "573e8c9b1379f0f2fad98290"
               },
               "accountid": 1404,
               "address": "737, Grand Rue,",
               "city": "Port-au-Prince",
               "country": "Haiti",
               "createdAt": "10/26/2015 7:27:42 PM",
               "heading": "Computer, Printers and Supplies",
               "headingid": 323,
               "img_url": "https://res.cloudinary.com/klik-io/image/upload/v1454850817/pages-jaunes-haiti-icon_sosoco.png",
               "name": "A & M Entreprises",
               "objectId": "0lw9lVl23j",
               "phonenumber1": "+509 3770 0303",
               "website": "http://868.ht"
            }

这是graphiql输出： 在此处输入图像描述

4

1 回答 1

3

看起来您的 biz 解析器使用find()，它将返回一个列表。你想要的是findOne().

PS：您通常可以通过在适当的解析函数中添加打印语句（或运行节点调试器）来调试此类问题。

于 2016-06-10T22:17:46.887 回答