salix/services/ticket/common/models/ticket-tracking.js

module.exports = function(Self) {
    require('../methods/ticket-tracking/changeState')(Self);

    Self.validatesPresenceOf('stateFk', {message: 'State cannot be blank'});

    Self.observe('before save', async function(ctx) {
        let models = Self.app.models;
        let token = ctx.options.accessToken;
        let userId = token && token.userId;

        let user = await models.Worker.findOne({where: {userFk: userId}});
        ctx.instance.workerFk = user.id;
    });
};