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

provided 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 trying period through workingcalendar follows:

return models.workingcalendar .findall({     attributes: [         'periodid',         'date'     ],     include: [         { model: models.period }     ],     group: ['date', 'periodid'] }); 

i'm getting following error: unhandled rejection error: period not associated workingcalendar!

yet work other way around.

my question: why can't period through workingcalendar? , have make sure can?

i have tried putting foreignkey attribute on association wel as binding no avail sadly. welcome!

so found it. indexes should in same object 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; };