auto save option in assoications

please explain about auto save option in associations with examples

Here is the good guide.
http://edgeapi.rubyonrails.org/classes/ActiveRecord/AutosaveAssociation.html

Kaleem Ullah wrote in post #974292:

Here is the good guide.
http://edgeapi.rubyonrails.org/classes/ActiveRecord/AutosaveAssociation.html

i am new to ruby on rails ,thank you very much sir