PostgreSQL - SequelizeDatabaseError with join table (Code: 42P01) - postgresql

Question

I am trying to create a join table for many to many relationships.
I am getting the following error:
"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 *;"
},
The relationship is between User and Route:
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;
};
Migration files for user and route does not have much but just the basics. For join table:
"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");
}
};
My controller and route is as following:
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);
So when I try to post to that route, I get the error message on the top of the post.

Answer 1

I had this same error, and was similarly thrown by an unrelated issue (my SQL clause had single quotes that were all escaped, and, since the query ran when I removed them, I was focused on a way to remove the escaping). My problem was that my migration was generated with a table name that violated the PostgreSQL naming convention; when I corrected this (I had a capitalized first letter in my table name, so I edited the migration for a lowercase first letter and reran it), the error disappeared. Maybe that might fix yours?

Answer 2

After you created db, models and migrations, you need to run
sequelize db:migrate
before running your application.
If not, it will throw SequelizeDatabaseError as mentioned above.

Answer 3

If you look at the line:
"routine": "parserOpenTable"
We will see an error when opening the table.
Most likely, the error is due to the naming of the tables.
Pay attention to capital letters.
Example,
"./models/user.js": tableName "users", but in DBMS we have table "Users".
Just change tableName.