belongsTo - hasMany - getting instance from belongsTo - sequelize - associations

Question

Provided I have following models:
module.exports = function (sequelize, DataTypes) {
var WorkingCalendar = sequelize.define('WorkingCalendar', {
date: DataTypes.DATEONLY,
isWorking: DataTypes.BOOLEAN,
}, {
indexes: [{
unique: true,
fields: ['PeriodId', 'date']
}]
}, {
classMethods: {
associate: function (models) {
WorkingCalendar.belongsTo(models.Period);
}
}
});
return WorkingCalendar;
};
module.exports = function(sequelize, DataTypes) {
var Period = sequelize.define('Period', {
name: DataTypes.STRING,
numberOfPeriods: DataTypes.INTEGER
}, {
classMethods: {
associate: function(models) {
Period.hasMany(models.WorkingCalendar);
}
}
});
return Period;
};
And then trying to get the Period through the WorkingCalendar as follows:
return models.WorkingCalendar
.findAll({
attributes: [
'PeriodId',
'date'
],
include: [
{ model: models.Period }
],
group: ['date', 'PeriodId']
});
I'm getting following error: Unhandled rejection Error: Period is not associated to WorkingCalendar!
Yet it does work the other way around.
My question:
Why can't I get the Period through the WorkingCalendar? And what do I have to do to make sure I can?
I have already tried putting the foreignKey attribute on the association as wel as the as binding but to no avail sadly. Any help would be very welcome!

Answer 1

So finally found it.
The indexes should be in the same object as classMethods
WRONG
module.exports = function (sequelize, DataTypes) {
var WorkingCalendar = sequelize.define('WorkingCalendar', {
date: DataTypes.DATEONLY,
isWorking: DataTypes.BOOLEAN,
}, {
indexes: [{
unique: true,
fields: ['PeriodId', 'date']
}]
}, {
classMethods: {
associate: function (models) {
WorkingCalendar.belongsTo(models.Period);
}
}
});
return WorkingCalendar;
};
RIGHT
module.exports = function (sequelize, DataTypes) {
var WorkingCalendar = sequelize.define('WorkingCalendar', {
date: DataTypes.DATEONLY,
isWorking: DataTypes.BOOLEAN,
}, {
indexes: [{
unique: true,
fields: ['PeriodId', 'date']
}],
classMethods: {
associate: function (models) {
WorkingCalendar.belongsTo(models.Period);
}
}
});
return WorkingCalendar;
};