Why sequelize returns only one result? - node.js

Question

i got some problems while writing code, here is some information:
Models:
'use strict';
module.exports = (sequelize, DataTypes) => {
const news = sequelize.define('news', {
id: {
allowNull: false,
autoIncrement: true,
primaryKey: true,
type: DataTypes.INTEGER
},
title: DataTypes.STRING,
slug: {
type: DataTypes.STRING(64),
unique: true
},
body: DataTypes.STRING,
postedBy: DataTypes.INTEGER
}, {});
news.associate = function(models) {
models.news.hasMany(models.news_ratings, {
as: 'rate',
foreignKey: models.news_ratings.newsId
})
};
return news;
};
///////////////
'use strict';
module.exports = (sequelize, DataTypes) => {
const news_rating = sequelize.define('news_ratings', {
id: {
allowNull: false,
autoIncrement: true,
primaryKey: true,
type: DataTypes.INTEGER
},
user: DataTypes.INTEGER,
rating: DataTypes.INTEGER,
newsId: DataTypes.INTEGER
}, {});
news_rating.associate = function(models) {
models.news_ratings.belongsTo(models.news, {
foreignKey: models.news.id
})
};
return news_rating;
};
Controller:
router.get('/news/:from/:count', (req, res, next) => {
if (Number.isInteger(Number(req.params.from)) && Number.isInteger(Number(req.params.count))) {
models.news.findAll({
offset: Number(req.params.from),
limit: Number(req.params.count),
include: [{
as: 'rate',
model: models.news_ratings,
attributes: [
[sequelize.fn('AVG', sequelize.col('rating')), 'rate']
]
}]
})
.then(response => {
console.log(response)
res.json(response)
})
.catch(err => {
console.error(err)
res.status(500).end()
})
} else next()
})
This code returns this result (then fetching /news/0/1):
[{
"id": 1,
"title": "First new",
"slug": "demo:first_new",
"body": "New 1. This is demo ^=^",
"postedBy": 0,
"createdAt": "2020-07-22T13:53:48.000Z",
"updatedAt": "2020-07-22T13:53:48.000Z",
"rate": [
{
"rate": "-0.3333"
}
]
}]
But I have 5 news in my database!
...And then I fetch /news/0/5, i got this:
[
{
"id": 1,
"title": "First new",
"slug": "demo:first_new",
"body": "New 1. This is demo ^=^",
"postedBy": 0,
"createdAt": "2020-07-22T13:53:48.000Z",
"updatedAt": "2020-07-22T13:53:48.000Z",
"rate": [
{
"rate": "0.0000"
}
]
}
]
Look, rate is invalid! It should be -0.3333!
Can someone explain me, why this happen and how to resolve this issue?