Node.js Sequelize:设置独立标志导致未知列错误
我的工作岗位模式是:Node.js Sequelize:设置独立标志导致未知列错误,node.js,sequelize.js,Node.js,Sequelize.js,我的工作岗位模式是: module.exports = (sequelize, DataTypes) => { const jobPost = sequelize.define('JobPost', { id: { type: DataTypes.BIGINT, allowNull: true, autoIncrement: true, primaryKey: true,
module.exports = (sequelize, DataTypes) => {
const jobPost = sequelize.define('JobPost', {
id: {
type: DataTypes.BIGINT,
allowNull: true,
autoIncrement: true,
primaryKey: true,
},
jobTitle: {
type: DataTypes.STRING(150),
allowNull: true,
},
}, {
timestamps: true,
paranoid: true,
});
jobPost.associate = (models) => {
jobPost.hasMany(models.JobApplication);
};
return jobPost;
};
SELECT `JobPost`.`id`, `JobPost`.`jobTitle` FROM `JobPosts` AS `JobPost` WHERE (`JobPost`.`deletedAt` IS NULL AND `JobApplications`.`firstName` LIKE '%n%');
职位申请模式:
module.exports = (sequelize, DataTypes) => {
const jobApplication = sequelize.define('JobApplication', {
id: {
type: DataTypes.BIGINT,
allowNull: true,
autoIncrement: true,
primaryKey: true,
},
firstName: {
type: DataTypes.STRING(150),
allowNull: true,
},
}, {
timestamps: true,
paranoid:true,
});
jobApplication.associate = (models) => {
jobApplication.belongsTo(models.Member, { as: 'applicant' });
jobApplication.belongsTo(models.JobPost);
};
return jobApplication;
};
根据姓名查询职位的代码:
const jobPosts = await db.JobPost.findAll({
attributes: ['id', 'jobTitle',],
where: {
'$JobApplications.firstName$': {
[db.Sequelize.Op.like]: `%${firstName}%`,
}
},
include: [
{
model: db.JobApplication,
attributes: ['id', 'applicantId', 'firstName'],
},
],
});
我得到了预期的输出:
"jobPosts": [
{
"id": 4,
"jobTitle": "Quality Assurance Engineer II",
"JobApplications": [
{
"id": 2,
"applicantId": 5,
"firstName": "Shanu"
}
]
},
{
"id": 5,
"jobTitle": "Senior QA Engineer/ QA Engineer",
"JobApplications": [
{
"id": 3,
"applicantId": 6,
"firstName": "Anna"
}
]
}
]
由于job post可以有多个job应用程序,并且需要使用分页并提高性能,因此我为job应用程序模型设置了分离标志
const jobPosts = await db.JobPost.findAll({
attributes: ['id', 'jobTitle',],
where: {
'$JobApplications.firstName$': {
[db.Sequelize.Op.like]: `%${firstName}%`,
}
},
include: [
{
model: db.JobApplication,
attributes: ['id', 'applicantId', 'firstName'],
separate:true,
},
],
});
我收到未知列错误:
Error: Unknown column 'JobApplications.firstName' in 'where clause'
at Packet.asError (/home/nikhil/project/node_modules/mysql2/lib/packets/packet.js:684:17)
at Query.execute (/home/nikhil/project/node_modules/mysql2/lib/commands/command.js:28:26)
at Connection.handlePacket (/home/nikhil/project/node_modules/mysql2/lib/connection.js:455:32)
at PacketParser.onPacket (/home/nikhil/project/node_modules/mysql2/lib/connection.js:73:18)
at PacketParser.executeStart (/home/nikhil/project/node_modules/mysql2/lib/packet_parser.js:75:16)
at Socket.<anonymous> (/home/nikhil/project/node_modules/mysql2/lib/connection.js:80:31)
at Socket.emit (events.js:188:13)
at addChunk (_stream_readable.js:288:12)
at readableAddChunk (_stream_readable.js:269:11)
at Socket.Readable.push (_stream_readable.js:224:10)
at TCP.onStreamRead [as onread] (internal/stream_base_commons.js:145:17)
未执行联接,因为我按预期使用了分离。其中条件包含无效查询
但是,解决办法是什么?如果我在没有单独标志的情况下运行,它会工作,但会破坏分页和性能
如果我在jobApplication中移动where子句,预期的输出将发生变化。如果名字不匹配,我不需要工作职位
如果firstName=“Shanu”,则输出为
{
"jobPosts": [
{
"id": 4,
"jobTitle": "Quality Assurance Engineer II",
"JobApplications": [
{
"id": 2,
"applicantId": 5,
"firstName": "Shanu"
}
]
},
{
"id": 5,
"jobTitle": "Senior QA Engineer/ QA Engineer",
"JobApplications": []
}
]
}
我不需要第二个对象。它的行为就像JobApplication的required被设置为false一样。问题在于您试图访问查询中未提供的列,因为它是分开的。将“单独”添加到包含的模型时,其外观如下所示:
SELECT foo FROM bar WHERE bar.id IN (SELECT id FROM baz WHERE firstName LIKE 'some string');
只需将where子句移动到包含的模型,如
const jobPosts = await db.JobPost.findAll({
attributes: ['id', 'jobTitle',],
include: [
{
model: db.JobApplication,
attributes: ['id', 'applicantId', 'firstName'],
where: {
firstName: {
[db.Sequelize.Op.like]: `%${firstName}%`
}
},
separate:true,
},
],
});
谢谢你的回复,但是如果我移动where条款,我会得到没有firName条件的职位。请检查问题的最后部分。有没有办法获得我提到的预期产出?