macOS [Core Data Application] How to print data from database?

Hello!

I've some problems. I want to print/save to pdf data from database. I create custom controller to entity, and add save method. In window user can select instance and click print button. I don't have all information in textView (and I can't have because there are two relationships (one relationship is to-many) ) and I have to prepare proper situation of data in document/page. I found how to print/save to pdf textView but I can't use it.
Please help me!

I see it is hard to do. I was thinking about it and I have a question how can I put e.g NSString to new window where I will put NSView which can be used to print procedure???