Revert r22764 (#33829).

It breaks activities_controller_test.rb.


git-svn-id: https://svn.redmine.org/redmine/trunk@22770 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/issue.rb

                      :scope => lambda {|options| options[:open_issues] ? self.open : self.all}
 
   acts_as_event :title => Proc.new {|o| "#{o.tracker.name} ##{o.id} (#{o.status}): #{o.subject}"},
-                :datetime => Proc.new {|o| o.updated_on},
                 :url => Proc.new {|o| {:controller => 'issues', :action => 'show', :id => o.id}},
                 :type => Proc.new {|o| 'issue' + (o.closed? ? '-closed' : '')}
 

test/functional/issues_controller_test.rb

       assert_select 'link[rel=self][href=?]', 'http://test.host/projects/ecookbook/issues.atom'
       assert_select 'link[rel=alternate][href=?]', 'http://test.host/projects/ecookbook/issues'
       assert_select 'entry link[href=?]', 'http://test.host/issues/1'
-
-      assert_select 'entry' do |entries|
-        entries.each do |entry|
-          issue_id = entry.at('id').text.split('/').last.to_i
-          issue = Issue.find(issue_id)
-          formatted_updated_on = issue.updated_on.utc.iso8601
-          # <updated> element should use the value of `Issue#updated_on`
-          assert_select entry, 'updated', text: formatted_updated_on
-        end
-      end
     end
   end