view db/migrate/101_populate_changesets_user_id.rb @ 1080:5bd8c86cfa6a issue_540

Makes the Publication model act as an activity; overloading the default ActivitiesController#index view in the Bibliography Plugin in order to differentiate Publications from the other event types.

* Known issues:
** route to /activities is not working (only to /activity);
** publication cache needs to be implemented in the model, not in the helper;
** when a publication is added to n projects, n events are created (all with the same content).

class PopulateChangesetsUserId < ActiveRecord::Migration
  def self.up
    committers = Changeset.connection.select_values("SELECT DISTINCT committer FROM #{Changeset.table_name}")
    committers.each do |committer|
      next if committer.blank?
      if committer.strip =~ /^([^<]+)(<(.*)>)?$/
        username, email = $1.strip, $3
        u = User.find_by_login(username)
        u ||= User.find_by_mail(email) unless email.blank?
        Changeset.update_all("user_id = #{u.id}", ["committer = ?", committer]) unless u.nil?
      end
    end
  end

  def self.down
    Changeset.update_all('user_id = NULL')
  end
end