This feature "from" and "to" was interesting, I extracted this to a gem
https://github.com/YasuOza/activemodel-attribute_changed_specification/ I wish this gem makes your happy. On Tue, Dec 18, 2012 at 9:51 PM, Peter Brown <[email protected]> wrote: > I believe you can do this already with ActiveModel::Dirty: > > def send_mail_to_customer > UserMailer.send_mail_to_customer if status_change == [0, 1] > end > > > On Monday, December 17, 2012 9:14:33 AM UTC-5, angelo capilleri wrote: >> >> Hi, >> I'm thinking about a method that responds true or false for the changes of >> attributes from a value to another to trace a little bit the status of an AR >> object. >> >> Ex. >> class Book < ActiveRecord::Base >> STATUS_DELIVER = [0,1] >> before_save :send_mail_to_customer >> >> def send_mail_to_customer >> UserMailer.send_mail_to_customer if self.changes['status'] == [0, 1] >> end >> end >> >> It' a simple case but when complexity grows up a method like >> >> def send_mail_to_customer >> UserMailer.send_mail_to_customer if self.status.changes(from: 0, to: 1) >> end >> >> Maybe is more mantenible and readable. >> > -- > You received this message because you are subscribed to the Google Groups > "Ruby on Rails: Core" group. > To view this discussion on the web visit > https://groups.google.com/d/msg/rubyonrails-core/-/xAAFpU6U2EoJ. > > 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-core?hl=en. -- Yasuharu Ozaki E-mail : [email protected] -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Core" 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-core?hl=en.
