graphql Sequalize dataloader问题，对于不可为null的字段，不能返回null

ip地址的架构：

import { gql } from 'apollo-server-express';

module.exports = gql`
    extend type Query {
        # allTxn: [SubscrTxn]
        cblockIp(ip_key: Int!): CblockIp
    }

    type CblockIp {
        ip_key: Int!
        ip_address: String
        cblock_key: Int!
    }
`;

我创建了一个数据加载器，但我得到了“错误”：

如果我需要字段

ip\u键：CblockIp
如果我从
ip\u密钥：CblockIp中删除“！”则ip\u密钥为空：）

我的文件如下所示：

app.js
它的一部分：

import DataLoader from 'dataloader';
import { proxyBatcher } from './batchFunctions';

const server = new ApolloServer({
    typeDefs,
    resolvers,
    context: ({ req }) => ({
        models,
        secret: process.env.JWT_SECRET,
        member: getLoggedInUser(req),
        me: getLoggedInUser(req),
        proxyLoader: new DataLoader((keys) => proxyBatcher(keys, models))
    })
});

batchFunctions.js
：

import _ from 'lodash';
import { Op } from 'sequelize';

export const proxyBatcher = async (keys, { CblockIp }) => {
    const proxies = await CblockIp.findAll({
        raw: true,
        where: {
            ip_key: {
                [Op.in]: keys
            }
        }
    });

    const gp = _.groupBy(proxies, 'ip_key');
    console.log(proxies);
    console.log(gp);
    console.log(keys.map((k) => gp[k] || []));

    return keys.map((k) => gp[k] || []);
};

export const dummy = 5;

configProxy.js（解析器）：

如果在我的解析器中，我用{models}替换{proxyLoader}，这一行

proxyLoader.load(parent.ip_key);

与

一切正常，但没有批处理程序。我想在我的配料器里我做错了什么

log显示，即使在batcher中，一切都应该正常，这就是为什么我不明白问题出在哪里。以下是来自batcher函数的console.log：

console.log(proxies);
console.log(gp);
console.log(keys.map((k) => gp[k] || []));

Executing (default): SELECT `config_key`, `config_type`, `config_name`, `filename`, `member_key`, `proxy_port` FROM `config` AS `config` WHERE `config`.`config_key` = 2314;
Executing (default): SELECT `proxy_key`, `config_key`, `ip_key` FROM `config_proxy` AS `config_proxy` WHERE `config_proxy`.`config_key` = 2314;
Executing (default): SELECT `ip_key`, `ip_address`, `cblock_key` FROM `cblock_ip` AS `cblock_ip` WHERE `cblock_ip`.`ip_key` IN (116312, 185667, 185969, 99424);
[ { ip_key: 99424, ip_address: '172.246.69.152', cblock_key: 576 },
  { ip_key: 116312, ip_address: '45.59.24.113', cblock_key: 645 },
  { ip_key: 185667,
    ip_address: '184.174.74.121',
    cblock_key: 1051 },
  { ip_key: 185969,
    ip_address: '184.174.75.170',
    cblock_key: 1052 } ]
{ '99424':
   [ { ip_key: 99424, ip_address: '172.246.69.152', cblock_key: 576 } ],
  '116312':
   [ { ip_key: 116312, ip_address: '45.59.24.113', cblock_key: 645 } ],
  '185667':
   [ { ip_key: 185667,
       ip_address: '184.174.74.121',
       cblock_key: 1051 } ],
  '185969':
   [ { ip_key: 185969,
       ip_address: '184.174.75.170',
       cblock_key: 1052 } ] }
[ [ { ip_key: 116312, ip_address: '45.59.24.113', cblock_key: 645 } ],
  [ { ip_key: 185667,
      ip_address: '184.174.74.121',
      cblock_key: 1051 } ],
  [ { ip_key: 185969,
      ip_address: '184.174.75.170',
      cblock_key: 1052 } ],
  [ { ip_key: 99424, ip_address: '172.246.69.152', cblock_key: 576 } ] ]

graphql查询如下所示

query Proxies($config_key: Int!) {
  config(config_key: $config_key) {
    config_name
    configProxy {
      proxy_key
      ip_key {
        ip_address
      }
    }
  }
}

你不能在你的解析器里返回任何东西

return proxyLoader.load(parent.ip_key);

谢谢，就这样。。。但是现在它没有返回ip地址，知道为什么吗？同样，它现在是空的。我怀疑这是您的类型和返回的内容不匹配（即，您的类型是
[Foo]
但您返回的是一个对象，或者您的类型是
Foo
但您返回的是一个数组）。很难说没有看到实际的模式。请随意使用相关的类型定义更新问题，我可以看一下。在此期间，我将以重复的方式结束此问题。我已将ip_地址的类型添加到顶部。感谢您抽出时间。对不起，我是说
ConfigProxy.ip_key
-
[CblockIp]
或
CblockIp
？似乎我通过添加来实现。然后（posts=>posts[0]）。再次感谢你的帮助。
return models.CblockIp.findByPk(parent.ip_key)

console.log(proxies);
console.log(gp);
console.log(keys.map((k) => gp[k] || []));

Executing (default): SELECT `config_key`, `config_type`, `config_name`, `filename`, `member_key`, `proxy_port` FROM `config` AS `config` WHERE `config`.`config_key` = 2314;
Executing (default): SELECT `proxy_key`, `config_key`, `ip_key` FROM `config_proxy` AS `config_proxy` WHERE `config_proxy`.`config_key` = 2314;
Executing (default): SELECT `ip_key`, `ip_address`, `cblock_key` FROM `cblock_ip` AS `cblock_ip` WHERE `cblock_ip`.`ip_key` IN (116312, 185667, 185969, 99424);
[ { ip_key: 99424, ip_address: '172.246.69.152', cblock_key: 576 },
  { ip_key: 116312, ip_address: '45.59.24.113', cblock_key: 645 },
  { ip_key: 185667,
    ip_address: '184.174.74.121',
    cblock_key: 1051 },
  { ip_key: 185969,
    ip_address: '184.174.75.170',
    cblock_key: 1052 } ]
{ '99424':
   [ { ip_key: 99424, ip_address: '172.246.69.152', cblock_key: 576 } ],
  '116312':
   [ { ip_key: 116312, ip_address: '45.59.24.113', cblock_key: 645 } ],
  '185667':
   [ { ip_key: 185667,
       ip_address: '184.174.74.121',
       cblock_key: 1051 } ],
  '185969':
   [ { ip_key: 185969,
       ip_address: '184.174.75.170',
       cblock_key: 1052 } ] }
[ [ { ip_key: 116312, ip_address: '45.59.24.113', cblock_key: 645 } ],
  [ { ip_key: 185667,
      ip_address: '184.174.74.121',
      cblock_key: 1051 } ],
  [ { ip_key: 185969,
      ip_address: '184.174.75.170',
      cblock_key: 1052 } ],
  [ { ip_key: 99424, ip_address: '172.246.69.152', cblock_key: 576 } ] ]

query Proxies($config_key: Int!) {
  config(config_key: $config_key) {
    config_name
    configProxy {
      proxy_key
      ip_key {
        ip_address
      }
    }
  }
}

return proxyLoader.load(parent.ip_key);