findall many to many sequelize - node.js

Question

I have a list of many to many of the people tables and lists. I need to make a query that includes the relation table, something like:
SELECT p.id, pl.id
FROM people p inner join peopletolists pl
WHERE p.id == pl.id
My models:
Lists model:
'use strict';
module.exports = (sequelize, DataTypes) => {
const lists = sequelize.define('lists', {
listId: {
type: DataTypes.INTEGER,
primaryKey: true,
autoIncrement: true
},
nome: DataTypes.STRING(50),
status: DataTypes.STRING(1),
parametros: DataTypes.STRING(500)
}, {
timestamps: false,
});
lists.associate = function(models) {
lists.belongsToMany(models.people, {
through: models.peopletolists,
foreignKey: 'listId',
});
}
return lists;
};
People model:
'use strict';
module.exports = (sequelize, DataTypes) => {
const people = sequelize.define('people', {
peopleId: {
type: DataTypes.INTEGER,
primaryKey: true,
autoIncrement: true
},
cpf: DataTypes.STRING(11),
name: DataTypes.STRING(50),
city: DataTypes.STRING(50),
}, {
timestamps: false
});
people.associate = function (models) {
people.belongsToMany(models.lists, {
through: models.peopletolists,
foreignKey: 'peopleId'
});
}
return people;
};
N:M model:
'use strict';
module.exports = function (sequelize, DataTypes) {
const peopletolists = sequelize.define("peopletolists", {
id: {
type: DataTypes.INTEGER,
primaryKey: true,
allowNull: false,
autoIncrement: true,
unique: true,
},
listId: {
type: DataTypes.INTEGER,
references: {
model: 'lists',
key: 'listId'
},
allowNull: false
},
peopleId: {
type: DataTypes.INTEGER,
references: {
model: 'people',
key: 'peopleId'
},
allowNull: false
}
}, {
timestamps: false
});
return peopletolists;
}
Query:
router.get('/', function (req, res, next) {
model.lists.findAll({
include: [{
model: model.peopletolists,
}]
})
.then(lists => res.json({
data: lists,
}))
.catch(err => res.json({
error: err,
}))
});
Error: SequelizeEagerLoadingError
A person has many lists and lists have many people. I have not found many things in the Sequelize documentation and not many people complaining about this error, it's generally on ClassMethods, but I'm not even using it.
What's wrong?

Answer 1

This is how I am using it.
ArtistModel.findAll({
where: {
slug: req.params.slug
}, attributes: ['id']
, include: [{
model: Genres,
as: 'ArtistGenre',
required: false,
// attributes: ['id'],
through: {attributes: []},
}],
subQuery: false,
limit: req.query.limit,
offset: req.skip
})
Where Genre is the table that is linked with the Artist table with a many-to-many relationship through ArtistGenre
ArtistGenre Model:
const db = require('../utils/connection');
const Sequelize = require('sequelize');
let ArtistGenre = db.define('artist_genre', {
id: {
type: Sequelize.INTEGER,
primaryKey: true,
autoIncrement: true
}
}, {
timestamps: false,
underscored: true
});
ArtistGenre.removeAttribute('id');
module.exports = ArtistGenre;
Artist:
const db = require('../utils/connection');
const Sequelize = require('sequelize');
module.exports = db.define('artist', {
id: {
type: Sequelize.INTEGER,
primaryKey: true,
autoIncrement: true
},
name: {
type: Sequelize.STRING
},
status: {
type: Sequelize.ENUM,
values: ['active', 'inactive'],
defaultValue: 'active'
},
created_at: {
type: 'TIMESTAMP',
defaultValue: Sequelize.literal('CURRENT_TIMESTAMP'),
allowNull: false
},
updated_at: {
type: 'TIMESTAMP',
defaultValue: Sequelize.literal('CURRENT_TIMESTAMP'),
allowNull: false
}
}, {
underscored: true,
timestamps: false
});
Genre Model:
const db = require('../utils/connection');
const Sequelize = require('sequelize');
module.exports = db.define('genre', {
id: {
type: Sequelize.BIGINT(20),
primaryKey: true,
autoIncrement: true
},
name: {
type: Sequelize.STRING
}
}, {
timestamps: false
});
Associations are like the following:
Artist.belongsToMany(models.genre, {as: 'ArtistGenre', through: 'artist_genre', foreignKey: 'artist_id', otherKey: 'genre_id'});
Genre.belongsToMany(models.artist, {as: 'ArtistGenre', through: 'artist_genre', foreignKey: 'genre_id', otherKey: 'artist_id'});