Sequelize - Return only relationships - node.js

Question

I have a problem, I need to return an array just from my flows relationship. How can I get an array with a list of the flows of all companies?
My model and migrations are correct, I just don't know how to make the query return only the flows.
Company Model
module.exports = (sequelize) => {
const company = sequelize.define('company', {
id: {
allowNull: false,
autoIncrement: true,
primaryKey: true,
type: DataTypes.INTEGER
},
uuid: {
type: DataTypes.UUID,
defaultValue: DataTypes.UUIDV4
},
name: {
type: DataTypes.STRING,
allowNull: false
}
})
company.hasMany(sequelize.models.flow, {foreignKey: 'company_id', as: 'flows'})
}
Flow model
module.exports = (sequelize) => {
const flow = sequelize.define('flow', {
id: {
allowNull: false,
autoIncrement: true,
primaryKey: true,
type: DataTypes.INTEGER
},
company_id: {
allowNull: false,
type: DataTypes.INTEGER
},
uuid: {
type: DataTypes.UUID,
defaultValue: DataTypes.UUIDV4
},
name: {
type: DataTypes.STRING,
allowNull: false
},
description: {
type: DataTypes.TEXT
}
})
flow.belongsTo(sequelize.models.company, {foreignKey: 'company_id', as: 'company'})
}
Query
const companies = await ORM.models.company
.findAll({
include: [{
model: ORM.models.flow,
as: 'flows'
}]
})
This query is returning like this:
[
{
"id": 1,
"uuid": "f0c1a5e1-c54c-4083-8284-5a9b272e8ba1",
"name": "Company 1",
"created_at": "2021-02-11T05:47:55.830Z",
"updated_at": "2021-02-11T05:47:55.830Z",
"flows": [
{
"id": 1,
"company_id": 1,
"uuid": "768262d2-88b7-4e0f-81e8-30d7253aae65",
"name": "Flow 1",
"description": null,
"created_at": "2021-02-11T05:48:10.211Z",
"updated_at": "2021-02-11T05:48:10.211Z",
"companyId": 1
}
]
},
{
"id": 2,
"uuid": "3dea2541-a505-4f0c-a356-f1a2d449d050",
"name": "Company 1",
"created_at": "2021-02-11T05:48:11.872Z",
"updated_at": "2021-02-11T05:48:11.872Z",
"flows": [
{
"id": 2,
"company_id": 2,
"uuid": "3e66e8e6-3754-41e5-93ca-6e8ed49e2025",
"name": "Flow 2",
"description": null,
"created_at": "2021-02-11T05:48:20.743Z",
"updated_at": "2021-02-11T05:48:20.743Z",
"companyId": 2
}
]
}
]
I need to return like this:
[
{
"id":1,
"company_id":1,
"uuid":"768262d2-88b7-4e0f-81e8-30d7253aae65",
"name":"Flow 1",
"description":null,
"created_at":"2021-02-11T05:48:10.211Z",
"updated_at":"2021-02-11T05:48:10.211Z",
"companyId":1
},
{
"id":2,
"company_id":2,
"uuid":"3e66e8e6-3754-41e5-93ca-6e8ed49e2025",
"name":"Flow 2",
"description":null,
"created_at":"2021-02-11T05:48:20.743Z",
"updated_at":"2021-02-11T05:48:20.743Z",
"companyId":2
}
]

Answer 1

If you just want the flows related data, why to fetch company related data with flows in it? Perhaps, you could only fetch flows data.
const flows = await ORM.models.flow
.findAll({
where: ....,
..........
});
If anyhow, you still want to show the flows for particular companies without showing any attributes of the company model, just do something like this:
const companies = await ORM.models.company
.findAll({
attributes: [], //empty
include: [{
model: ORM.models.flow,
as: 'flows'
}]
});