"uninitialized constant Tagteam::ExportImport" on attempting to export a hub

[zackw]

Clicking the "download data" button on /export_import produces a 500 error page and I get this in the logs:

A NameError occurred in export_import#download:

  uninitialized constant Tagteam::ExportImport
Did you mean?  ExportImportController
  app/controllers/export_import_controller.rb:11:in `download'


-------------------------------
Request:
-------------------------------

  * URL       : https://iclab-tagteam.cs.umass.edu/export_import/download
  * IP address: 128.237.152.112
  * Parameters: {"controller"=>"export_import", "action"=>"download"}
  * Rails root: /home/tagteam/tagteam
  * Timestamp : 2017-11-27 13:44:48 -0500

-------------------------------
Session:
-------------------------------

  * session id: [FILTERED]
  * data: #<ActionDispatch::Request::Session:0x00555d15256fa8 ...>

-------------------------------
Environment:
-------------------------------

  * HTTPS                                          : on
  * HTTP_ACCEPT                                    : text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
  * HTTP_ACCEPT_ENCODING                           : gzip, deflate, br
  * HTTP_ACCEPT_LANGUAGE                           : en-US,en;q=0.5
  * HTTP_COOKIE                                    : [REDACTED]
  * HTTP_DNT                                       : 1
  * HTTP_HOST                                      : iclab-tagteam.cs.umass.edu
  * HTTP_REFERER                                   : https://iclab-tagteam.cs.umass.edu/export_import
  * HTTP_UPGRADE_INSECURE_REQUESTS                 : 1
  * HTTP_USER_AGENT                                : Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Firefox/52.0
  * HTTP_VERSION                                   : HTTP/1.1
  * ORIGINAL_FULLPATH                              : /export_import/download
  * ORIGINAL_SCRIPT_NAME                           :
  * PASSENGER_CONNECT_PASSWORD                     : [FILTERED]
  * PATH_INFO                                      : /export_import/download
  * QUERY_STRING                                   :
  * REMOTE_ADDR                                    : 128.237.152.112
  * REMOTE_PORT                                    : 37080
  * REQUEST_METHOD                                 : GET
  * REQUEST_URI                                    : /export_import/download
  * ROUTES_46929117658700_SCRIPT_NAME              :
  * SCRIPT_NAME                                    :
  * SECRET_KEY_BASE                                : [REDACTED]
  * SERVER_NAME                                    : iclab-tagteam.cs.umass.edu
  * SERVER_PORT                                    : 443
  * SERVER_PROTOCOL                                : HTTP/1.1
  * SERVER_SOFTWARE                                : Apache/2.4.25 (Debian) Phusion_Passenger/5.0.30
  * SSL_TLS_SNI                                    : iclab-tagteam.cs.umass.edu
  * action_controller.instance                     : export_import#download
  * action_dispatch.backtrace_cleaner              : #<Rails::BacktraceCleaner:0x00555d101c0f58>
  * action_dispatch.cookies                        : #<ActionDispatch::Cookies::CookieJar:0x00555d15284cf0>
  * action_dispatch.cookies_digest                 :
  * action_dispatch.cookies_serializer             : hybrid
  * action_dispatch.encrypted_cookie_salt          : encrypted cookie
  * action_dispatch.encrypted_signed_cookie_salt   : signed encrypted cookie
  * action_dispatch.http_auth_salt                 : http authentication
  * action_dispatch.key_generator                  : #<ActiveSupport::CachingKeyGenerator:0x00555d12a7e918>
  * action_dispatch.logger                         : #<ActiveSupport::Logger:0x00555d12c08d38>
  * action_dispatch.parameter_filter               : [:password, :password_confirmation, "SHARED_KEY_FOR_TASKS", :password]
  * action_dispatch.redirect_filter                : []
  * action_dispatch.remote_ip                      : 128.237.152.112
  * action_dispatch.request.content_type           :
  * action_dispatch.request.formats                : [#<Mime::Type:0x00555d1282e3c0 @synonyms=["application/xhtml+xml"], @symbol=:html, @string="text/html", @hash=-3952484700252355808>]
  * action_dispatch.request.parameters             : {"controller"=>"export_import", "action"=>"download"}
  * action_dispatch.request.path_parameters        : {:controller=>"export_import", :action=>"download"}
  * action_dispatch.request.query_parameters       : {}
  * action_dispatch.request.request_parameters     : {}
  * action_dispatch.request.unsigned_session_cookie: [REDACTED]
  * action_dispatch.request_id                     : 423b3628-0d22-44ff-90f2-80abab9795dd
  * action_dispatch.routes                         : #<ActionDispatch::Routing::RouteSet:0x00555d12c67c98>
  * action_dispatch.secret_key_base                : [REDACTED]
  * action_dispatch.secret_token                   : [REDACTED]
  * action_dispatch.show_detailed_exceptions       : false
  * action_dispatch.show_exceptions                : true
  * action_dispatch.signed_cookie_salt             : signed cookie
  * exception_notifier.options                     : {:sender_address=>"[email protected]", :exception_recipients=>"[REDACTED]", :email_prefix=>"[tagteam-errors] ", :sections=>["request", "session", "environment", "backtrace"], :background_sections=>["backtrace", "data"], :verbose_subject=>true, :normalize_subject=>false, :ignore_exceptions=>[Acl9::AccessDenied, ActionController::RoutingError, ActiveRecord::RecordNotFound], :ignore_crawlers=>[], :ignore_if=>#<Proc:0x00555d14884c78@/home/tagteam/tagteam/vendor/bundle/ruby/2.3.0/gems/exception_notification-2.6.1/lib/exception_notifier.rb:30 (lambda)>}
  * rack.errors                                    : #<IO:0x00555d0fbd9a90>
  * rack.hijack                                    : #<Proc:0x00555d1526d230@/usr/lib/ruby/vendor_ruby/phusion_passenger/rack/thread_handler_extension.rb:84 (lambda)>
  * rack.hijack?                                   : true
  * rack.input                                     : #<PhusionPassenger::Utils::TeeInput:0x00555d1526d460>
  * rack.multiprocess                              : true
  * rack.multithread                               : false
  * rack.request.cookie_hash                       : [REDACTED]
  * rack.request.cookie_string                     : [REDACTED]
  * rack.request.query_hash                        : {}
  * rack.request.query_string                      :
  * rack.run_once                                  : false
  * rack.session                                   : #<ActionDispatch::Request::Session:0x00555d15256fa8>
  * rack.session.options                           : #<ActionDispatch::Request::Session::Options:0x00555d15256f58>
  * rack.url_scheme                                : https
  * rack.version                                   : [1, 2]
  * warden                                         : Warden::Proxy:46929137547120 @config={:default_scope=>:user, :scope_defaults=>{}, :default_strategies=>{:user=>[:rememberable, :database_authenticatable]}, :intercept_401=>false, :failure_app=>#<Devise::Delegator:0x00555d10f6f7f8>}
  * Process: 26926
  * Server : iclab-tagteam

-------------------------------
Backtrace:
-------------------------------

  app/controllers/export_import_controller.rb:11:in `download'

A class named Tagteam::ExportImport is defined in lib/tagteam/export_import.rb and I do not understand why it isn't visible here. None of the other code in app/ seems to explicitly "require" or "include" files from lib/. (I do not speak Ruby.)

[zackw]

Adding

require 'tagteam/export_import'

to the top of app/controllers/export_import_controller.rb is a sufficient workaround. I do not know what a proper fix would be.