:path/team view rendering complains when no `access_options.key` found.

Started GET "/yangchenyun/huali/team" for 127.0.0.1 at 2012-12-22 07:55:20 +0800
Processing by TeamMembersController#index as HTML
  Parameters: {"project_id"=>"yangchenyun/huali"}
  Rendered projects/_project_head.html.haml (7.6ms)
  Rendered team_members/_show.html.haml (4.8ms)
  Rendered team_members/_show.html.haml (7.1ms)
  Rendered team_members/_show.html.haml (9.5ms)
  Rendered team_members/_show.html.haml (5.4ms)
  Rendered team_members/_show.html.haml (5.2ms)
  Rendered team_members/_team.html.haml (36.8ms)
  Rendered team_members/index.html.haml within layouts/project_resource (47.6ms)
Completed 500 Internal Server Error in 61ms

ActionView::Template::Error (undefined method `pluralize' for nil:NilClass):
    1: - grouper_project_members(@project).each do |access, members|
    2:   %fieldset
    3:     %legend
    4:       = Project.access_options.key(access).try(:pluralize)
    5:       %small= members.size
    6:     %ul.unstyled
    7:       - members.each do |up|
  app/views/team_members/_team.html.haml:4:in `block in _app_views_team_members__team_html_haml___2927471174155321223_61385820'
  app/views/team_members/_team.html.haml:1:in `each'
  app/views/team_members/_team.html.haml:1:in `_app_views_team_members__team_html_haml___2927471174155321223_61385820'
  app/views/team_members/index.html.haml:20:in `_app_views_team_members_index_html_haml__3480240727681363182_63239060'