graphql序列化数据加载器问题，对于不可为null的字段[重复项]，无法返回null

Question

IP地址的模式：

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，但出现“错误”：

[
    
      "message": "Cannot return null for non-nullable field ConfigProxy.ip_key.",

如果我需要字段ip_key: CblockIp!如果我删除了“！”从ip_key: CblockIp到ip_key为null :)


  "data": 
    "config": 
      "config_name": "FF0RFQH0",
      "configProxy": [
        
          "proxy_key": 4351701,
          "ip_key": null
        ,
        
          "proxy_key": 4351702,
          "ip_key": null
        ,
        
          "proxy_key": 4351703,
          "ip_key": null
        ,
        
          "proxy_key": 4351700,
          "ip_key": null
        
      ]

我的文件如下：

app.js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）：

import  requiresAuth  from '../permissions';

const resolvers = 
    Query: 
        // configs: (parent, args,  models ) => 
        //  return models.Config.findAll();
        // ,
        configProxy: requiresAuth.createResolver(
            (parent,  proxy_key ,  models ) => 
                return models.ConfigProxy.findOne(
                    where: 
                        proxy_key
                    
                );
            
        )
    ,
    ConfigProxy: 
        config_key: (parent, args,  models ) => 
            return models.Config.findByPk(parent.config_key);
        ,
        ip_key: (parent, args,  proxyLoader ) => 
            proxyLoader.load(parent.ip_key);
            //return models.CblockIp.findByPk(parent.ip_key)
        
    
;

如果在我的解析器中，我将proxyLoader替换为models和此行

proxyLoader.load(parent.ip_key);

与

return models.CblockIp.findByPk(parent.ip_key)

一切正常，但没有批处理程序。我想我的配料器做错了什么。

Console.log显示，即使在批处理程序中也应该没问题，这就是为什么我不明白问题出在哪里的原因。这是来自：

的批处理功能的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  ] ]

并且graphql查询看起来像这样

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