我正在尝试为多对多关系创建连接表。
我收到以下错误:
"name": "SequelizeDatabaseError",
"parent": {
"name": "error",
"length": 110,
"severity": "ERROR",
"code": "42P01",
"position": "13",
"file": "parse_relation.c",
"line": "1160",
"routine": "parserOpenTable",
"sql": "INSERT INTO \"user_routes\" (\"id\",\"userId\",\"routeId\",\"createdAt\",\"updatedAt\") VALUES (DEFAULT,'1','1','2017-11-15 03:57:21.791 +00:00','2017-11-15 03:57:21.791 +00:00') RETURNING *;"
},
关系介于User
和Route
之间:
module.exports = (sequelize, DataTypes) => {
const Route = sequelize.define("Route", {
open: {
type: DataTypes.BOOLEAN,
allowNull: true
}
});
Route.associate = models => {
Route.belongsToMany(models.User, {
through: "userRoutes",
as: "users"
});
};
return Route;
};
module.exports = (sequelize, DataTypes) => {
var User = sequelize.define("User", {
email: DataTypes.TEXT,
password: DataTypes.TEXT
});
User.associate = models => {
User.belongsToMany(models.Route, {
through: "userRoutes",
as: "routes"
});
};
return User;
};
用户和路线的迁移文件并不多,只是基础知识。对于联接表:
"use strict";
module.exports = {
up: (queryInterface, Sequelize) => {
return queryInterface.createTable("user_route", {
id: {
allowNull: false,
autoIncrement: true,
primaryKey: true,
type: Sequelize.INTEGER
},
createdAt: {
allowNull: false,
type: Sequelize.DATE
},
updatedAt: {
allowNull: false,
type: Sequelize.DATE
},
userId: {
type: Sequelize.INTEGER,
onDelete: "CASCADE",
references: {
model: "Users",
key: "id"
}
},
routeId: {
type: Sequelize.INTEGER,
onDelete: "CASCADE",
references: {
model: "Routes",
key: "id"
}
}
});
},
down: (queryInterface, Sequelize) => {
return queryInterface.dropTable("user_route");
}
};
我的控制器和路线如下:
create(req, res) {
return UserRoutes.create({
userId: req.body.userId,
routeId: req.body.routeId
})
.then(userRoute => res.status(201).send(userRoute))
.catch(err => res.status(400).send(err));
},
app.post("/api/userRoutes", userRoutesController.create);
因此,当我尝试发布到该路线时,我会在帖子顶部收到错误消息。
答案 0 :(得分:2)
我遇到了同样的错误,并且同样被一个不相关的问题抛出(我的SQL子句中的单引号都被转义了,并且由于查询是在删除它们时运行的,所以我专注于一种删除转义的方法)。我的问题是我的迁移使用的表名违反了PostgreSQL的命名约定。当我更正了这个错误(表名中的首字母大写,因此我编辑了小写首字母的迁移并重新运行)后,错误消失了。也许这可能会解决您的问题?
答案 1 :(得分:1)
创建数据库,模型和迁移后,需要运行
sequelize db:migrate
在运行应用程序之前。
如果没有,它将如上所述抛出 SequelizeDatabaseError 。