Ability to assign issues to groups (#2964).

Option is disabled by default. It can be turned on in application settings.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@6306 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/mail_handler.rb

@@ -261,8 +261,7 @@ class MailHandler < ActionMailer::Base
 
   # Returns a Hash of issue attributes extracted from keywords in the email body
   def issue_attributes_from_keywords(issue)
-    assigned_to = (k = get_keyword(:assigned_to, :override => true)) && find_user_from_keyword(k)
-    assigned_to = nil if assigned_to && !issue.assignable_users.include?(assigned_to)
+    assigned_to = (k = get_keyword(:assigned_to, :override => true)) && find_assignee_from_keyword(k, issue)
 
     attrs = {
       'tracker_id' => (k = get_keyword(:tracker)) && issue.project.trackers.named(k).first.try(:id),
@@ -353,14 +352,19 @@ class MailHandler < ActionMailer::Base
     end
     body.strip
   end
-
-  def find_user_from_keyword(keyword)
-    user ||= User.find_by_mail(keyword)
-    user ||= User.find_by_login(keyword)
-    if user.nil? && keyword.match(/ /)
+  
+  def find_assignee_from_keyword(keyword, issue)
+    keyword = keyword.to_s.downcase
+    assignable = issue.assignable_users
+    assignee = nil
+    assignee ||= assignable.detect {|a| a.mail.to_s.downcase == keyword || a.login.to_s.downcase == keyword}
+    if assignee.nil? && keyword.match(/ /)
       firstname, lastname = *(keyword.split) # "First Last Throwaway"
-      user ||= User.find_by_firstname_and_lastname(firstname, lastname)
+      assignee ||= assignable.detect {|a| a.is_a?(User) && a.firstname.to_s.downcase == firstname && a.lastname.to_s.downcase == lastname}
     end
-    user
+    if assignee.nil?
+      assignee ||= assignable.detect {|a| a.is_a?(Group) && a.name.downcase == keyword}
+    end
+    assignee
   end
 end