On Jun 9, 10:51 pm, Phoenix Rising <[email protected]> wrote: > > # File vendor/rails/activerecord/lib/active_record/base.rb, line > 2619 > 2619: def update_attributes(attributes) > 2620: self.attributes = attributes > 2621: save > 2622: end > > What I don't "get" is how self.attributes = attributes works.
The attributes= method is badly named, since it's not actually an assignment. A better name would be merge_attributes. The implementation is basically new_attributes.each do |key, value| send(key + '=', value) end Fred > Obviously it's assigning based on the passed-in parameters hash, but > given in my example that hash did NOT contain "condition" or "value", > it seems to skip those and go with whatever the current values are. > And as far as I know, this has been standard with update_attributes > from day one. > > So - and somebody please verify or correct my understanding - as long > as the hash I pass in to update_attributes doesn't overwrite my prior > manual assignment methods, this functionality should continue - > through future updates to the framework - to work as expected - > correct? > > And if the above is correct, does anybody see anything else wrong that > I may not have considered with doing things this way? > > Thanks again =) > > On Jun 9, 3:05 pm, Perry Smith <[email protected]> > wrote: > > > I don't see the "multiple" calls to save. > > > update_attributes will call save but I don't see the other call to save. > > > By the way, update_attributes calls save (as of 2.3.2? or was it before > > that) only if at least one attribute has changed. > > -- > > Posted viahttp://www.ruby-forum.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 [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en -~----------~----~----~----~------~----~------~--~---
