On Aug 26, 2009, at 11:11 AM, Greg Donald wrote: > On Wed, Aug 26, 2009 at 7:15 AM, Difei > Zhao<rails-mailing-l...@andreas-s.net> wrote: >> I have some active_record models which have same columns, for >> instance: >> >> model A (int id, vchar name, vchar code) >> model B (int id, vchar name, vchar code) >> >> I can initiate a new model B object using "b = B.new", assuming >> that I >> already have an "a" acquired by A.find(), how can I assign the column >> values of "a" to object "b" easily like: >> >> [code] >> b = B.new(a) > > attributes = a.attributes > attributes.id = nil > b = B.new( attributes ) > >> b.save >> [/code] > -- > Greg Donald > http://destiney.com/
Actually, there's no need to nil the id because you can't mass-assign the id. b = B.new(a.attributes) would have exactly the same effect. -Rob Rob Biedenharn http://agileconsultingllc.com r...@agileconsultingllc.com --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk@googlegroups.com To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
