如何使用Node js获取sequelize中的数据

Question

这是我用过的代码，获取了数据库中的所有数据，但我没有得到任何价值。我是续集的新手。

   Project.findAll({ raw: true}).then(function (users) {
        console.log(users);
  console.log(users.dataValues);

    }).catch(function (err) {
        console.log('Oops! something went wrong, : ', err);
    });

这是输出：这是console.log(users);

   [ DAO {
        dataValues: 
         { idProject: 1,
           projectName: 'Symfony',
           isActive: '1',
           createdAt: 2018-10-23T06:32:43.000Z,
           modifiedAt: 2018-10-23T06:32:43.000Z },
        _previousDataValues: 
         { idProject: 1,
           projectName: 'Symfony',
           isActive: '1',
           createdAt: 2018-10-23T06:32:43.000Z,
           modifiedAt: 2018-10-23T06:32:43.000Z },

        options: { isNewRecord: false, isDirty: false, raw: true },
        hasPrimaryKeys: true,
        selectedValues: 
         RowDataPacket {
           idProject: 1,
           projectName: 'Symfony',
           isActive: '1',
           createdAt: 2018-10-23T06:32:43.000Z,
           modifiedAt: 2018-10-23T06:32:43.000Z },
        __eagerlyLoadedAssociations: [],
        isNewRecord: false }.....

这是console.log(users.dataValues);

undefined

怎么可能？

Answer 1

当您使用 findAll 时，它 returns 一个数组，如您在此处的文档中所见： http://docs.sequelizejs.com/class/lib/model.js~Model.html#static-method-findAll

所以你应该遍历这个数组，像这样：

 Project.findAll({ raw: true})
 .then(projects => {
    projects.forEach(project => {
       console.log(project);
       console.log('project name', project.projectName);
    })
 }).catch(function (err) {
     console.log('Oops! something went wrong: ', err);
 });

您可以选择使用 Async/Await 以获得更清晰的代码：

 try {
   const projects = await Project.findAll({ raw: true});
   projects.forEach(project => {
        console.log('project name ', project.projectName);
   })
 } catch(err) {
     console.log('Oops! something went wrong: ', err);
 }

如何使用Node js获取sequelize中的数据

How to get data in sequelize using Noje js

node.js

sequelize.js

sequelize-cli