salix/modules/worker/back/models/worker-observation.js

module.exports = function(Self) {
    Self.validatesPresenceOf('text', isEnabled, {message: 'Description cannot be blank'});
    function isEnabled(err) {
        if (!this.text) err();
    }

    Self.observe('before save', async function(ctx) {
        ctx.instance.created = new Date();
        let token = ctx.options.accessToken;
        let userId = token && token.userId;
        ctx.instance.userFk = userId;
    });
};