In the Agile Rails book, on page 232 (PDF, 4th edition) there is an example of (within ActiveRecord) marking an article as read by a user at the present time. Short example code (from the book) here: class User < ActiveRecord::Base has_and_belongs_to_many :articles def read_article(article) articles.push_with_attributes(article, :read_at => Time.now) end # ... end However, it seems this piece of code would only work the first time you read a specific article. It appears to always create a new join table post, and not to just update if there is an existing post. How would one best solve this?
on 2006-01-02 20:49
on 2006-01-03 02:31
Henrik wrote: > best solve this? Here is an update_attributes method for has_and_belongs_to_many associations: http://encytemedia.com/blog/articles/2005/06/15/st... However: (1) I would have thought this goes in a file in lib rather than in application_helper.rb, (2) The "end" on the first line shouldn't be there, and (3) "> 0" could be added to the end of the DB call so that a boolean is returned like the usual update_attributes method. Are there any other solutions out there? Should something like this be added to the ActiveRecord distribution? -- We develop, watch us RoR, in numbers too big to ignore.