Javascript 如何在sequelize上查询共享ID表
我有4个表/模型,它们将ID作为主键共享,但对于示例,我将只显示2个Javascript 如何在sequelize上查询共享ID表,javascript,mysql,node.js,sequelize.js,Javascript,Mysql,Node.js,Sequelize.js,我有4个表/模型,它们将ID作为主键共享,但对于示例,我将只显示2个 User: { id: { type: Sequelize.INTEGER, primaryKey: true, allowNull: false } Person: { id: { type: Sequelize.INTEGER, primaryKey: true, allowNull: false
User: {
id: {
type: Sequelize.INTEGER,
primaryKey: true,
allowNull: false
}
Person: {
id: {
type: Sequelize.INTEGER,
primaryKey: true,
allowNull: false
},
name: {
type: Sequelize.STRING
}
我使用的是共享ID,所以person主键是用户的主键,它没有自动识别功能。那么有没有办法在这两个表之间建立连接呢?我试着做一些类似的事情:
getAll(){
return User.getAll({
include: [{
model:Person,
}]
})
}
但既然没有关系,它就不起作用了。我该怎么办?
谢谢您不能在没有关系的情况下使用include。您可以使用原始查询检索以下信息:
var queryString = 'select * from User u join Person p on u.id = p.id where u.id = :sharedId';
models.sequelize
.query(queryString, {
replacements: { shareId: id},
type: models.sequelize.QueryTypes.SELECT
})
.then(function(result) {
res.json(attendance);
});
但是,您必须实现验证,以确保表被正确填充
但是,我鼓励您实现表之间的关系,因为它更易于维护。大概是这样的:
var User = sequelize.define("User", {
id: { type: DataTypes.INTEGER, primaryKey: true},
name: { type: DataTypes.STRING, name: 'name' },
...
}, {
classMethods: {
associate: function(models) {
User.hasOne(models.Person);
}
}
});
var Person = sequelize.define("Person", {
id: { type: DataTypes.INTEGER, primaryKey: true},
name: { type: DataTypes.STRING, name: 'name' },
...
}, {
classMethods: {
associate: function(models) {
Person.belogsTo(models.User);
}
}
});