Maps repository users to Redmine users (#1383).

Users with same username or email are automatically mapped. Mapping can be manually adjusted in repository settings. Multiple usernames can be mapped to the same Redmine user.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@2006 e93f8b46-1217-0410-a6f0-8f06a7374b81

db/migrate/101_populate_changesets_user_id.rb

@@ -0,0 +1,18 @@
+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