all.
Entities:
[Library {title}] <-->> [Book {title}] <<-->> [Author {name}]
Controllers:
NSArrayController [Library] => {Entity: Library}
NSArrayController [Book] => {Entity: Book, ContentSet: Library, books}
NSArrayController [Author] => {Entity: Author, ContentSet: Book, authors}
NSArrayController [Authors] => {Entity: Author}
Form:
[ NSPopUpButton *]
[ NSTableView **]
[ add ] [ remove ]
* button get content from NSArrayController [Author w/o contentset option]
** table get content from another NSArrayController [Author with contentset option set as Library.books]
Question:
how i can add Author into Book.authors from Author entity? (Use previous authors for any book)