Simon Grant wrote in post #969223: > Say that I want to create a web form that contains only a few fields > from a table of 100 fields. To use a model from the table, I would have > to read all the fields of the model (through an ActiveModel::find ) to > populate the form.
Wrong -- you can use the :select option. > Then when I want to update the values of the form > back to the database, will not all the 100 field values of the model be > updated? or just the ones changed. Just the ones in the form. When in doubt, watch the generated SQL. > Seems to be very inefficient. I only > want to read and write the values of the form that I need. That's all that happens. And Colin is right: you're trying to prematurely optimize. Don't do that. Best, -- Marnen Laibow-Koser http://www.marnen.org [email protected] Sent from my iPhone -- 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 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.
