Marius.. not instead of :sublesson_id. You need to add the :id attribute in addition to the other nested attributes.
Btw, :id is generated as a hidden field by fields_for. Check here: http://apidock.com/rails/ActionView/Helpers/FormHelper/fields_for Thanks! On Tuesday, August 19, 2014 3:37:55 PM UTC+5:30, Ruby-Forum.com User wrote: > > Thanks Steve, but now is give me error message...i write :id instead of > sublesson_id ...This :id where do he come from from? > > Thanks! > > -- > Posted via http://www.ruby-forum.com/. > -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/c8043452-35c1-44a4-9dfc-42828655f9bb%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.

