200331_TIL

200331_TIL

• 오늘 학습한 내용
  • 리액트 교과서 6장 React 에서 이벤트 다루기
  • Error 객체

    try {
     a.b.c.d = f;
    } catch (e) {
     console.dir(e); // ReferenceError: a is not defined
    }
    // 에러인 e 객체
    {
     message: 'a is not defined',
     stack: 'ReferenceError: a is not defined\n    at <anonymous>:2:3',
     __proto__: Error
    }

• 오늘 생긴 에러

1. sequelize MODULE_NOT_FOUND
   => npm install

2. AssertionError [ERR_ASSERTION]: Missing where attribute in the options parameter
   --- postman으로 http://localhost:4000/card/hinted에
   patch 요청 시 발생
   

   
   => update(values, options)
   update 첫번째 매개변수인 values 주지 않아서 생긴 오류😓
   https://sequelize.readthedocs.io/en/latest/api/model/#updatevalues-options-promisearrayaffectedcount-affectedrows

https://stackoverflow.com/questions/26581715/sequelize-update-does-not-work-anymore-missing-where-attribute-in-the-options
https://sequelize.org/master/class/lib/model.js~Model.html#static-method-update

3. warning: ignoring ref with broken name refs/...

https://stackoverflow.com/questions/50078137/warning-ignoring-ref-with-broken-name-refs-stash-2

4. (node:47046) [SEQUELIZE0004] DeprecationWarning: A boolean value was passed to options.operatorsAliases. This is a no-op with v5 and should be removed.
   
   https://stackoverflow.com/questions/58593200/deprecationwarning-a-boolean-value-was-passed-to-options-operatorsaliases-this

   let values = { marked: "1" }; 
   // "1": true, "0": false
   // (db에는 tinyint(1)로 저장)
   let condition = { where: { id: req.body.id } };
    Card.update(values, condition);