Sequelize - ORM - Associations not working - mysql

Question

Using Sequelize with MySQL. I have three models. Consultant, FamilyMember and Appointments. Appointment refers to Consultant and FamilyMember.
I have defined the foreign keys in the Appointment model. When the DB is created - the foreign keys are visible - when I check through a MySQL client, on the appointment table. The table names are freeze - so there isn't any chance of pluralization of the table names.
Consultant Model:
module.exports = (sequelize, DataTypes) => {
const consultant = sequelize.define('consultant', {
ID: {
type: DataTypes.UUID,
primaryKey: true,
allowNull: false
},
FirstName: {
type: DataTypes.STRING,
allowNull: false
},
LastName: {
type: DataTypes.STRING,
allowNull: false
}
{
freezeTableName: true
}
);
return consultant;
};
Appointment Model:
module.exports = (sequelize, DataTypes) => {
const appointment = sequelize.define('appointment', {
// attributes
ID: {
type: DataTypes.UUID,
primaryKey: true,
allowNull: false
},
ConsultantID: {
type: DataTypes.UUID,
allowNull: false,
references: {
model: 'consultant',
key: 'ID'
}
},
FamilyMemberID: {
type: DataTypes.UUID,
allowNull: false,
references: {
model: 'familymember',
key: 'ID'
}
}
},
{
freezeTableName: true
}
);
appointment.associate = function (models) {
models.appointment.belongsTo(models.consultant, {
foreignKey: 'ConsultantID',
as: 'consultant',
});
models.appointment.belongsTo(models.familymember, {
foreignKey: 'FamilyMemberID',
as: 'familymember',
});
};
return appointment;
};
Family Member model:
module.exports = (sequelize, DataTypes) => {
const familymember = sequelize.define('familymember', {
// attributes
ID: {
primaryKey: true,
type: DataTypes.UUID,
allowNull: false
},
FamilyID: {
type: DataTypes.UUID,
allowNull: false
},
FirstName: {
type: DataTypes.STRING,
allowNull: false
},
LastName: {
type: DataTypes.STRING,
allowNull: false
}
},
{
freezeTableName: true
}
);
return familymember;
};
Then in the code I try to fetch appointment and get the related familymember and consultant like this
var appointments = await Appointment.findAll({
where: {
AppointmentDateConfirmed: {
$gte: moment().subtract(0, 'days').toDate()
}
}, include:[Consultant, FamilyMember]
}
)
However I get an error
UnhandledPromiseRejectionWarning: SequelizeEagerLoadingError: consultant is not associated to appointment!

Answer 1

I suppose you should register your associations after models registration like I pointed in this answer