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Sequelize associations get errors

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[前端(javascript) 所属分类 前端(javascript) | 发布者 店小二03 | 时间 2018 | 作者 红领巾 ] 0人收藏点击收藏

I want to "code-first" which generate table by the "Sequelize",here my code is

var Sequelize = require('sequelize');

exports.createTable = function (req,res) { var sequelize = new Sequelize('myblog','root','');

var Blog = sequelize.define('Blog',{ // the blog id bid: { type: Sequelize.INTEGER, allowNull: false, autoIncrement: true ,primaryKey: true }, // bname btitle: { type: Sequelize.STRING, allowNull: false }, // blog Content bcontent: { type: Sequelize.TEXT, allowNull: false }, // blog date bdate: { type: Sequelize.DATE, defaultValue: Sequelize.NOW } }); var User = sequelize.define('User',{ // uid uid: { type: Sequelize.INTEGER, allowNull: false ,autoIncrement: true, primaryKey: true }, // uname uname: { type: Sequelize.TEXT, allowNull: false, }, // register date regDate: { type: Sequelize.DATE, allowNull: false, defaultValue: Sequelize.NOW }, }); Blog.hasMany(User); User.hasMany(Blog); Blog.sync(); User.sync(); var blog = Blog.build({ btitle: 'this is a title', bcontent: 'this is a Content!', bdate: new Date() }); var user1 = User.build({ uname: 'www', uregDate: new Date() }); var user2 = User.build({ uname: 'www2', uregDate: new Date() }); blog .save() .success(function () { console.log('blog save suc'); }); user1 .save() .success(function () { console.log('user save suc') }); user2 .save() .success(function () { console.log('user save suc') }); blog .setUsers([user1,user2]) .success(function () { console.log('saved') }) .error(function (err) { console.log(err); }); // blog.getUsers() // .success(function (ascUser) { // console.log(ascUser); // }); sequelize .sync() .success(function () { res.send('createTable ok!'); }) .error(function () { res.send('createTable falied!'); });

}

And I got the error: Error:ER_BAD_FIELD_ERROR:Unknown column 'User.id' in 'where clause。。。。who can help me? thx a lot

Problem courtesy of: Daniel.Woo

Solution

What are the fields bid and uid for? Sequelize will automatically make an id for you, so if that's all those are being used for, you should delete them unless they are required. I'm not positive, but I'm guessing that if you create an auto-incrementing primary key that Sequelize may not automatically create an id field, thinking that you want to use that instead. But associations expect the column to be id. Again, not sure on why, but I bet if you remove those bid and uid fields, it'll work as you expect.

Solution courtesy of: Nathan Loyer

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