How to add additional field on dhtmlxschedular

I am using Ruby on Rails as a back-end Framework and Angularjs as a front-end.It is possible to add some additional fields on New/Edit Popup . e.g i want to add some new fields like location, Attendees of Events etc… How can i able to override existing code so i can save this fields in database too.

Hello,
check this article regarding adding extra editors to the details form
docs.dhtmlx.com/scheduler/lightbox_editors.html

The name of the property which will be binded to the editor is defined by the value of ‘map_to’ property of the section object.
i.e. { …, map_to:“text”} will write to event.text property.
You’ll need to add this properties to your server side model and handle them on saving/loading