关于节点包“squelize"，“dataValues"是什么意思? [英] about node package 'squelize',what is 'dataValues' 's mean?

问题描述

我的问题是:

koa2 中间件 '/info' ctx.res.body ------>front-end get 对象没有 dataValues 和其他值.只有像 这样的对象{a:1,b:2}

koa2 middleware '/info' ctx.res.body ------>front-end get Object doesn't have dataValues and other value .only have object like {a:1,b:2}

在中间件中，我得到 ser 它有很多键值，例如 {dataValue:{a:1,b:2},eviousDataValues:'xxx'}

In middleware I get ser it have so many key-value like {dataValue:{a:1,b:2},eviousDataValues:'xxx'}

为什么前端的Object和ko2中间件中的'ser'不一样?

Why is the front-end Object not the same as 'ser' in ko2 middleware?

这是我的代码

let sequelize = new Sequelize('test', sqlOpt.name, sqlOpt.pwd, {
host: sqlOpt.host,
dialect: 'mysql',
port: sqlOpt.port,
pool: {
max: 5000,
min: 0,
idle: 10000
}})
let api = sequelize.define(
'api', {
  id: {
    type: Sequelize.STRING,
    primaryKey: true
  },
  name: Sequelize.STRING,
  method: Sequelize.STRING,
  url: Sequelize.STRING,
  description: Sequelize.STRING,
  createTime: Sequelize.INTEGER,
  did: Sequelize.STRING,
  status: Sequelize.INTEGER,
  content_type: Sequelize.INTEGER
}, {
  freezeTableName: true,
  tableName: 'apilist',
  timestamps: false
})
module.exports = {
searchbyDid(params) {
  return api.findAll({
  where: {
    did: params.id
  }
})}}

router.get('/info', async ctx => {
  let ser = await ser_m.searchAll()
  for (let val of ser) {
    val.dataValues.item = await api_m.searchbyDid({
      id: val.id
    })
  }
  ctx.response.body = ser
})

推荐答案

Sequelize 的响应始终是一个 Model Instance，其形式为.

The response from Sequelize is always an Model Instance, Which is of the form.

{
  dataValues: [//All your data],
  previousDataValues: [//Old Values],
  ... //many more properties
}

如果您不需要实例，而只需要数据.您可以在查询中提供一个额外的标志作为 raw:true.文档可在这里

If you don't need the instance, and just want the data. You can supply an additional flag in your query as raw:true. Docs are available here

这样做

Model.A.findAll({where:{/*Some Conditions*/},raw:true})

将仅将数据作为普通 JS 对象返回.

will return just the data as a plain JS object.

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