How to exclude associated table from findAll method in sequelize JS? - mysql

Question

I have 3 tables, course,groups and students. Each course has multiple groups and each groups have multiple students. I want to select courses and its students but when I use findAll method its displays groups too like [{courseName,courseCode,groups:[....,students:[...]]. I just want [{courseName,courseCode,students:[...]}}] .
How can i exclude group table in findAll method?
These are my tables:
Course table:
module.exports = (sequelize, DataTypes) => {
class course extends Model {
static associate(models) {
const { group } = models;
this.hasMany(group, {
foreignKey: "cid",
});
}
}
course.init(
{
cid: {
type: DataTypes.INTEGER,
primaryKey: true,
autoIncrement: true,
allowNull: false,
},
cname: DataTypes.STRING,
ccode: DataTypes.INTEGER,
},
{
indexes: [
{
unique: true,
fields: ["cname", "ccode"],
},
],
sequelize,
modelName: "course",
}
);
return course;
};
Group table:
module.exports = (sequelize, DataTypes) => {
class group extends Model {
static associate(models) {
const { teacher, studentgroup, student, subject, course } = models;
this.hasMany(subject);
this.belongsTo(course, {
onDelete: "CASCADE",
foreignKey: "cid",
});
this.belongsTo(teacher, {
onDelete: "CASCADE",
foreignKey: "tid",
});
this.belongsToMany(student, {
through: studentgroup,
foreignKey: "gid",
onDelete: "CASCADE",
});
}
}
group.init(
{
gid: {
type: DataTypes.INTEGER,
primaryKey: true,
autoIncrement: true,
allowNull: false,
},
gno: DataTypes.STRING,
},
{
sequelize,
modelName: "group",
timestamps: false,
}
);
return group;
};
Student table
module.exports = (sequelize, DataTypes) => {
class student extends Model {
static associate(models) {
const { group, studentgroup, attendance, user, studentparent, parent } =
models;
this.belongsToMany(parent, {
through: studentparent,
foreignKey: "sid",
});
this.belongsTo(user, {
foreignKey: "uid",
});
this.belongsToMany(group, {
through: studentgroup,
foreignKey: "sid",
onDelete: "CASCADE",
});
this.hasMany(attendance, {
foreignKey: "sid",
});
}
}
student.init(
{
sid: {
type: DataTypes.INTEGER,
primaryKey: true,
autoIncrement: true,
allowNull: false,
},
name: DataTypes.STRING,
lastname: DataTypes.STRING,
},
{
sequelize,
modelName: "student",
}
);
return student;
};
And this is my query:
await course.findAll({
required: true,
attributes: ["cname", "ccode"],
include: [
{
required: true,
model: models["group"],
include: [
{
model: student,
required: true,
},
],
},
],
});