유저 중복 이메일 체크 질문있습니다.

[정중식]

      const user = await db.collection('user_card').findOne({ email });
      console.log(user);
 
이렇게 하는거 맞을까요? 중복된 이메일인데 계속 null을 콘솔출력해줍니다.

const user = await db.collection('user_card').find({ email });
console.log(user);

해주면 

 sessionPool: ServerSessionPool { client: [MongoClient], sessions: [List] },
    hasEnded: false,
    clientOptions: [Object: null prototype] {
      hosts: [Array],
      credentials: [MongoCredentials],
      compressors: [Array],
      connectTimeoutMS: 30000,
      dbName: 'test',
      directConnection: false,
      driverInfo: {},
      enableUtf8Validation: true,
      forceServerObjectId: false,
      heartbeatFrequencyMS: 10000,
      keepAlive: true,
      keepAliveInitialDelay: 120000,
      loadBalanced: false,
      localThresholdMS: 15,
      maxConnecting: 2,
      maxIdleTimeMS: 0,
      maxPoolSize: 100,
      minPoolSize: 0,
      minHeartbeatFrequencyMS: 500,
      monitorCommands: false,
      noDelay: true,
      pkFactory: [Object],
      raw: false,
      readPreference: [ReadPreference],
      retryReads: true,
      retryWrites: true,
      serverSelectionTimeoutMS: 30000,
      socketTimeoutMS: 0,
      srvMaxHosts: 0,
      srvServiceName: 'mongodb',
      waitQueueTimeoutMS: 0,
      zlibCompressionLevel: 0,
      useNewUrlParser: true,
      userSpecifiedAuthSource: false,
      userSpecifiedReplicaSet: false,
      srvHost: 'cluster0.ip8dsz4.mongodb.net',
      tls: true,
      mongoLoggerOptions: [Object],
      metadata: [Object],
      replicaSet: 'atlas-hdeny5-shard-0',
      [Symbol(@@mdb.enableMongoLogger)]: false
    },
    explicit: false,
    supports: { causalConsistency: false },
    clusterTime: undefined,
    operationTime: undefined,
    owner: [Circular *3],
    defaultTransactionOptions: {},
    transaction: Transaction {
      state: 'NO_TRANSACTION',
      options: {},
      _pinnedServer: undefined,
      _recoveryToken: undefined
    },
    [Symbol(kCapture)]: false,
    [Symbol(snapshotEnabled)]: false,
    [Symbol(serverSession)]: null,
    [Symbol(txnNumberIncrement)]: 0
  },
  [Symbol(filter)]: {},
  [Symbol(builtOptions)]: {
    raw: false,
    useBigInt64: false,
    promoteLongs: true,
    promoteValues: true,
    promoteBuffers: false,
    ignoreUndefined: false,
    bsonRegExp: false,
    serializeFunctions: false,
    fieldsAsRaw: {},
    enableUtf8Validation: true,
    readPreference: ReadPreference {
      mode: 'primary',
      tags: undefined,
      hedge: undefined,
      maxStalenessSeconds: undefined,
      minWireVersion: undefined
    }
  }
}

막 이런거 출력해줍니다.
 
제가 뭘 잘못한건지 모르겠어요..

[codingapple]

하나찾을 땐 find말고 .findOne 씁시다

[정중식]

센센세 계속 null이 나옵니다.

signup.js 파일에 제가 쓴 코드입니다.

import { connectDB } from '@/util/database';
import bcrypt from 'bcrypt';

export default async function handler(req, res) {
  if (req.method === 'POST') {
    const { name, email, password } = req.body;

    try {
      let db = (await connectDB).db('forum');

      if (name === '' || email === '' || password === '') {
        return res.status(400).json('모든 칸을 입력해주세요');
      }

      const user = await db.collection('user_card').findOne({ email: email });
      console.log(user);
  
    } catch (error) {
      console.log('error:', error);
    }
  }
}

몽고디비에 저장되어있는건 다음 사진과 같아요


왜 null 이 나오는건지이유를 모르겠어요..

[정중식]

    const { name, email, password } = req.body;
console.log(name,email,password); 
다 정상 출력나오고있습니다.

[codingapple]

db.collection('user_card').는 오타인듯요

[정중식]

아..

.. 
감사합니다ㅋㅋㅋ..

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