salix/services/client/common/models/client-observation.js

module.exports = function(ClientObservation) {

    let loopBackContext = require('loopback-context');
     
    ClientObservation.validate('text', isEnabled, {message: 'Se debe rellenar el campo de texto'});
    function isEnabled(err) {
        if (!this.text) err();
    }

    ClientObservation.observe('before save', function(ctx, next) {
        ctx.instance.created = Date();
       let currentUser = loopBackContext.getCurrentContext();
       let userId = currentUser.get('currentUser');
       let app = require('../../server/server'); 
       let employee = app.models.Employee;
       employee.findOne({where: {userFk: userId}}, function (err, user){
            if (user){
                ctx.instance.employeeFk = user.id;
                next();
            }
       });
    });
};