J'utilise ActiveAdmin (avec un jeu de gemmes personnalisé pour Rails 4) avec Rails 4.0.0.rc2. L'application a également un code d'autorisation personnalisé basé sur des diffusions sur rails - # 385 et # 386 .
Lorsque je modifie quelque chose dans un fichier de ressources ActiveAdmin et que j'essaye de rafraîchir la page du navigateur, j'obtiens cette erreur au current_permission
méthode:
ArgumentError dans/admin/courses
Une copie d'ApplicationController a été supprimée de l'arborescence des modules mais est toujours active!
Si je réessaye une actualisation, j'obtiens:
Dépendance circulaire détectée lors du chargement automatique Autorisations constantes
Je pense que ce problème a quelque chose à voir avec le chargement automatique des classes en mode développement, après un changement dans le fichier source. J'ai vu des messages de problème similaires, mais ils sont pour Rails 2.3.x. En outre, la solution semble spécifier unloadable
dans le contrôleur en lançant cette erreur, mais je ne suis pas vous savez où mettre cet extrait dans ActiveAdmin.
Cela n'a peut-être rien à voir avec ActiveAdmin non plus. Il peut s'agir de la façon dont la classe Permissions a été créée et de son utilisation dans Application Controller. Si j'ajoute un skip_before_filter :authorize
dans la classe de ressources ActiveAdmin, cette erreur disparaît.
ApplicationController:
class ApplicationController < ActionController::Base
# Prevent CSRF attacks by raising an exception.
# For APIs, you may want to use :null_session instead.
protect_from_forgery with: :exception
before_filter :authenticate_user!
before_filter :authorize
delegate :allow_action?, to: :current_permission
helper_method :allow_action?
delegate :allow_param?, to: :current_permission
helper_method :allow_param?
private
def current_permission
@current_permission ||= Permissions.permission_for(current_user)
end
def current_resource
nil
end
def authorize
if current_permission.allow_action?(params[:controller], params[:action], current_resource)
current_permission.permit_params! params
else
redirect_to root_url, alert: "Not authorized."
end
end
end
Permissions.rb:
module Permissions
def self.permission_for(user)
if user.nil?
GuestPermission.new
elsif user.admin?
AdminPermission.new(user)
else
UserPermission.new(user)
end
end
end
admin/courses.rb:
ActiveAdmin.register Course do
index do
column :name
column :description
column :duration
column :status
column :price
default_actions
end
filter :discipline
filter :level
filter :lessons
filter :name
filter :status
end
Gemfile (lignes pertinentes):
gem 'Rails', '4.0.0.rc2'
# Use puma as the app server
gem 'puma'
# Administration - Temporary github refs until Rails 4 compatible releases
gem 'responders', github: 'plataformatec/responders'
gem 'inherited_resources', github: 'josevalim/inherited_resources'
gem 'ransack', github: 'ernie/ransack', branch: 'Rails-4'
gem 'activeadmin', github: 'gregbell/active_admin', branch: 'Rails4'
gem 'formtastic', github: 'justinfrench/formtastic'
ArgumentError:
ArgumentError - A copy of ApplicationController has been removed from the module tree but is still active!:
activesupport (4.0.0.rc2) lib/active_support/dependencies.rb:445:in `load_missing_constant'
activesupport (4.0.0.rc2) lib/active_support/dependencies.rb:183:in `const_missing'
rspec-core (2.13.1) lib/rspec/core/backward_compatibility.rb:24:in `const_missing'
app/controllers/application_controller.rb:17:in `current_permission'
app/controllers/application_controller.rb:25:in `authorize'
activesupport (4.0.0.rc2) lib/active_support/callbacks.rb:417:in `_run__1040990970961152968__process_action__callbacks'
activesupport (4.0.0.rc2) lib/active_support/callbacks.rb:80:in `run_callbacks'
actionpack (4.0.0.rc2) lib/abstract_controller/callbacks.rb:17:in `process_action'
actionpack (4.0.0.rc2) lib/action_controller/metal/rescue.rb:29:in `process_action'
actionpack (4.0.0.rc2) lib/action_controller/metal/instrumentation.rb:31:in `block in process_action'
activesupport (4.0.0.rc2) lib/active_support/notifications.rb:159:in `block in instrument'
activesupport (4.0.0.rc2) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
activesupport (4.0.0.rc2) lib/active_support/notifications.rb:159:in `instrument'
actionpack (4.0.0.rc2) lib/action_controller/metal/instrumentation.rb:30:in `process_action'
actionpack (4.0.0.rc2) lib/action_controller/metal/params_wrapper.rb:245:in `process_action'
activerecord (4.0.0.rc2) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
actionpack (4.0.0.rc2) lib/abstract_controller/base.rb:136:in `process'
actionpack (4.0.0.rc2) lib/abstract_controller/rendering.rb:44:in `process'
actionpack (4.0.0.rc2) lib/action_controller/metal.rb:195:in `dispatch'
actionpack (4.0.0.rc2) lib/action_controller/metal/rack_delegation.rb:13:in `dispatch'
actionpack (4.0.0.rc2) lib/action_controller/metal.rb:231:in `block in action'
actionpack (4.0.0.rc2) lib/action_dispatch/routing/route_set.rb:80:in `dispatch'
actionpack (4.0.0.rc2) lib/action_dispatch/routing/route_set.rb:48:in `call'
actionpack (4.0.0.rc2) lib/action_dispatch/journey/router.rb:71:in `block in call'
actionpack (4.0.0.rc2) lib/action_dispatch/journey/router.rb:59:in `call'
actionpack (4.0.0.rc2) lib/action_dispatch/routing/route_set.rb:655:in `call'
omniauth (1.1.4) lib/omniauth/strategy.rb:184:in `call!'
omniauth (1.1.4) lib/omniauth/strategy.rb:164:in `call'
omniauth (1.1.4) lib/omniauth/strategy.rb:184:in `call!'
omniauth (1.1.4) lib/omniauth/strategy.rb:164:in `call'
omniauth (1.1.4) lib/omniauth/strategy.rb:184:in `call!'
omniauth (1.1.4) lib/omniauth/strategy.rb:164:in `call'
newrelic_rpm (3.6.4.122) lib/new_relic/rack/error_collector.rb:12:in `call'
newrelic_rpm (3.6.4.122) lib/new_relic/rack/agent_hooks.rb:22:in `call'
newrelic_rpm (3.6.4.122) lib/new_relic/rack/browser_monitoring.rb:16:in `call'
newrelic_rpm (3.6.4.122) lib/new_relic/rack/developer_mode.rb:28:in `call'
meta_request (0.2.7) lib/meta_request/middlewares/app_request_handler.rb:13:in `call'
rack-contrib (1.1.0) lib/rack/contrib/response_headers.rb:17:in `call'
meta_request (0.2.7) lib/meta_request/middlewares/headers.rb:16:in `call'
meta_request (0.2.7) lib/meta_request/middlewares/meta_request_handler.rb:13:in `call'
warden (1.2.1) lib/warden/manager.rb:35:in `block in call'
warden (1.2.1) lib/warden/manager.rb:34:in `call'
rack (1.5.2) lib/rack/etag.rb:23:in `call'
rack (1.5.2) lib/rack/conditionalget.rb:25:in `call'
rack (1.5.2) lib/rack/head.rb:11:in `call'
actionpack (4.0.0.rc2) lib/action_dispatch/middleware/params_parser.rb:27:in `call'
actionpack (4.0.0.rc2) lib/action_dispatch/middleware/flash.rb:241:in `call'
rack (1.5.2) lib/rack/session/abstract/id.rb:225:in `context'
rack (1.5.2) lib/rack/session/abstract/id.rb:220:in `call'
actionpack (4.0.0.rc2) lib/action_dispatch/middleware/cookies.rb:486:in `call'
activerecord (4.0.0.rc2) lib/active_record/query_cache.rb:36:in `call'
activerecord (4.0.0.rc2) lib/active_record/connection_adapters/abstract/connection_pool.rb:626:in `call'
activerecord (4.0.0.rc2) lib/active_record/migration.rb:369:in `call'
actionpack (4.0.0.rc2) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
activesupport (4.0.0.rc2) lib/active_support/callbacks.rb:373:in `_run__2183739952227501342__call__callbacks'
activesupport (4.0.0.rc2) lib/active_support/callbacks.rb:80:in `run_callbacks'
actionpack (4.0.0.rc2) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
actionpack (4.0.0.rc2) lib/action_dispatch/middleware/reloader.rb:64:in `call'
actionpack (4.0.0.rc2) lib/action_dispatch/middleware/remote_ip.rb:76:in `call'
better_errors (0.9.0) lib/better_errors/middleware.rb:84:in `protected_app_call'
better_errors (0.9.0) lib/better_errors/middleware.rb:79:in `better_errors_call'
better_errors (0.9.0) lib/better_errors/middleware.rb:56:in `call'
actionpack (4.0.0.rc2) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
actionpack (4.0.0.rc2) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
railties (4.0.0.rc2) lib/Rails/rack/logger.rb:38:in `call_app'
railties (4.0.0.rc2) lib/Rails/rack/logger.rb:21:in `block in call'
activesupport (4.0.0.rc2) lib/active_support/tagged_logging.rb:67:in `block in tagged'
activesupport (4.0.0.rc2) lib/active_support/tagged_logging.rb:25:in `tagged'
activesupport (4.0.0.rc2) lib/active_support/tagged_logging.rb:67:in `tagged'
railties (4.0.0.rc2) lib/Rails/rack/logger.rb:21:in `call'
actionpack (4.0.0.rc2) lib/action_dispatch/middleware/request_id.rb:21:in `call'
rack (1.5.2) lib/rack/methodoverride.rb:21:in `call'
rack (1.5.2) lib/rack/runtime.rb:17:in `call'
activesupport (4.0.0.rc2) lib/active_support/cache/strategy/local_cache.rb:83:in `call'
rack (1.5.2) lib/rack/lock.rb:17:in `call'
actionpack (4.0.0.rc2) lib/action_dispatch/middleware/static.rb:64:in `call'
railties (4.0.0.rc2) lib/Rails/engine.rb:511:in `call'
railties (4.0.0.rc2) lib/Rails/application.rb:97:in `call'
rack (1.5.2) lib/rack/content_length.rb:14:in `call'
puma (2.1.1) lib/puma/server.rb:369:in `handle_request'
puma (2.1.1) lib/puma/server.rb:246:in `process_client'
puma (2.1.1) lib/puma/server.rb:145:in `block in run'
puma (2.1.1) lib/puma/thread_pool.rb:92:in `block in spawn_thread'
RuntimeError: Dépendance circulaire:
RuntimeError - Circular dependency detected while autoloading constant Permissions:
activesupport (4.0.0.rc2) lib/active_support/dependencies.rb:460:in `load_missing_constant'
activesupport (4.0.0.rc2) lib/active_support/dependencies.rb:183:in `const_missing'
rspec-core (2.13.1) lib/rspec/core/backward_compatibility.rb:24:in `const_missing'
activesupport (4.0.0.rc2) lib/active_support/dependencies.rb:686:in `remove_constant'
activesupport (4.0.0.rc2) lib/active_support/dependencies.rb:516:in `block in remove_unloadable_constants!'
activesupport (4.0.0.rc2) lib/active_support/dependencies.rb:516:in `remove_unloadable_constants!'
activesupport (4.0.0.rc2) lib/active_support/dependencies.rb:300:in `clear'
railties (4.0.0.rc2) lib/Rails/application/finisher.rb:90:in `block (2 levels) in <module:Finisher>'
activesupport (4.0.0.rc2) lib/active_support/file_update_checker.rb:75:in `execute'
railties (4.0.0.rc2) lib/Rails/application/finisher.rb:105:in `block (2 levels) in <module:Finisher>'
activesupport (4.0.0.rc2) lib/active_support/callbacks.rb:377:in `_run__2753119820186226816__prepare__callbacks'
activesupport (4.0.0.rc2) lib/active_support/callbacks.rb:80:in `run_callbacks'
actionpack (4.0.0.rc2) lib/action_dispatch/middleware/reloader.rb:74:in `prepare!'
actionpack (4.0.0.rc2) lib/action_dispatch/middleware/reloader.rb:62:in `call'
actionpack (4.0.0.rc2) lib/action_dispatch/middleware/remote_ip.rb:76:in `call'
better_errors (0.9.0) lib/better_errors/middleware.rb:84:in `protected_app_call'
better_errors (0.9.0) lib/better_errors/middleware.rb:79:in `better_errors_call'
better_errors (0.9.0) lib/better_errors/middleware.rb:56:in `call'
actionpack (4.0.0.rc2) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
actionpack (4.0.0.rc2) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
railties (4.0.0.rc2) lib/Rails/rack/logger.rb:38:in `call_app'
railties (4.0.0.rc2) lib/Rails/rack/logger.rb:21:in `block in call'
activesupport (4.0.0.rc2) lib/active_support/tagged_logging.rb:67:in `block in tagged'
activesupport (4.0.0.rc2) lib/active_support/tagged_logging.rb:25:in `tagged'
activesupport (4.0.0.rc2) lib/active_support/tagged_logging.rb:67:in `tagged'
railties (4.0.0.rc2) lib/Rails/rack/logger.rb:21:in `call'
actionpack (4.0.0.rc2) lib/action_dispatch/middleware/request_id.rb:21:in `call'
rack (1.5.2) lib/rack/methodoverride.rb:21:in `call'
rack (1.5.2) lib/rack/runtime.rb:17:in `call'
activesupport (4.0.0.rc2) lib/active_support/cache/strategy/local_cache.rb:83:in `call'
rack (1.5.2) lib/rack/lock.rb:17:in `call'
actionpack (4.0.0.rc2) lib/action_dispatch/middleware/static.rb:64:in `call'
railties (4.0.0.rc2) lib/Rails/engine.rb:511:in `call'
railties (4.0.0.rc2) lib/Rails/application.rb:97:in `call'
rack (1.5.2) lib/rack/content_length.rb:14:in `call'
puma (2.1.1) lib/puma/server.rb:369:in `handle_request'
puma (2.1.1) lib/puma/server.rb:246:in `process_client'
puma (2.1.1) lib/puma/server.rb:145:in `block in run'
puma (2.1.1) lib/puma/thread_pool.rb:92:in `block in spawn_thread'
Tout indice vous aidera. Faites-moi savoir si vous devez afficher d'autres extraits de code dans l'application.
Je ne sais pas exactement pourquoi cela se produit, mais j'ai trouvé une solution de contournement. Change ça:
def current_permission
@current_permission ||= Permissions.permission_for(current_user)
end
Pour ça:
def current_permission
@current_permission ||= ::Permissions.permission_for(current_user)
end
L'erreur est déclenchée à ce stade dans ActiveSupport :
# Load the constant named +const_name+ which is missing from +from_mod+. If
# it is not possible to load the constant into from_mod, try its parent
# module using +const_missing+.
def load_missing_constant(from_mod, const_name)
log_call from_mod, const_name
unless qualified_const_defined?(from_mod.name) && Inflector.constantize(from_mod.name).equal?(from_mod)
raise ArgumentError, "A copy of #{from_mod} has been removed from the module tree but is still active!"
end
# ...
end
Le problème se produit uniquement lorsque vous ne qualifiez pas complètement le nom de la constante, donc Rails essaie de le rechercher dans l'espace de noms ApplicationController
).
Pour les futurs visiteurs, j'ai pensé apporter des éclaircissements sur le problème d'origine même si la question est assez ancienne et qu'il existe déjà une réponse acceptée.
Le ArgumentError: A copy of X has been removed from the module tree but is still active
est déclenché lorsque vous essayez d'accéder à une classe automatiquement rechargée (dans le répertoire de l'application) à partir d'une classe qui n'est pas automatiquement rechargée (dans le répertoire lib).
Je n'utilise pas ActiveAdmin, mais je viens de rencontrer une dépendance circulaire avec ApplicationController.
Le problème était qu'un module d'aide a été déclaré incorrectement:
app/helpers/home_helper.rb
a été déclaré avec:
module StaticHelper
Après avoir corrigé cela, tout était pêche. Je n'ai pas cherché pourquoi cela s'est produit et Rails n'a pas renvoyé un message d'erreur plus intelligent.
En vous development.rb essayez temporairement de mettre
config.cache_classes = true
Ça a marché pour moi.
Vous pouvez essayer de mettre cette ligne dans votre config/initializers/active_admin.rb
:
Dans Rails <= 4:
config.skip_before_filter :load_footer_variables
Dans Rails> = 5
config.skip_before_action :load_footer_variables
Comme suggéré ici .