projects_controller_test tests an ajax (xhr) only request to find out
  if a user can_affiliate_to a project
config/routes specifies the can_affiliate_to route relative to project
projects_controller implements can_affiliate_to and passes its test

app/views/records/index.html.erb only hides or shows the dropbox div
based on whether a user can affiliate to a specified project

app/assets/javascripts/records.js.coffee toggles visibility of the
  dropbox div based on the ability of a user to affiliate to a
  chosen project in the record_filter

ALL TESTS PASS