为什么before_action：authorize以’错误的参数数’失败？
我已经和Devise一起成立了Pundit，以便对我的申请进行授权。 在我的一个控制器中，我有before_action :authorize 。
然后我进行了以下测试：
describe SomeController do before(:each) do login_user(FactoryGirl.create(:user, :user_type => :admin)) end describe "GET index" do it "it retrieves the index" do something = FactoryGirl.create(:Something) get :index assigns(:something).should eq([something]) end end end
我收到错误：
wrong number of arguments (0 for 1)
登录助手非常简单：
module ControllerMacros def login_user(user) if user.nil? user = FactoryGirl.create(:user) end @request.env["devise.mapping"] = Devise.mappings[:user] sign_in user end end
更新： Stacktrace：
Failure/Error: get :index ArgumentError: wrong number of arguments (0 for 1..2) # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/pundit-0.2.3/lib/pundit.rb:62:in `authorize' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.1.1/lib/active_support/callbacks.rb:424:in `block in make_lambda' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.1.1/lib/active_support/callbacks.rb:160:in `call' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.1.1/lib/active_support/callbacks.rb:160:in `block in halting' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.1.1/lib/active_support/callbacks.rb:149:in `call' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.1.1/lib/active_support/callbacks.rb:149:in `block in halting_and_conditional' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.1.1/lib/active_support/callbacks.rb:229:in `call' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.1.1/lib/active_support/callbacks.rb:229:in `block in halting' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.1.1/lib/active_support/callbacks.rb:149:in `call' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.1.1/lib/active_support/callbacks.rb:149:in `block in halting_and_conditional' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.1.1/lib/active_support/callbacks.rb:166:in `call' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.1.1/lib/active_support/callbacks.rb:166:in `block in halting' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.1.1/lib/active_support/callbacks.rb:166:in `call' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.1.1/lib/active_support/callbacks.rb:166:in `block in halting' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.1.1/lib/active_support/callbacks.rb:166:in `call' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.1.1/lib/active_support/callbacks.rb:166:in `block in halting' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.1.1/lib/active_support/callbacks.rb:86:in `call' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.1.1/lib/active_support/callbacks.rb:86:in `run_callbacks' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-4.1.1/lib/abstract_controller/callbacks.rb:19:in `process_action' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-4.1.1/lib/action_controller/metal/rescue.rb:29:in `process_action' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-4.1.1/lib/action_controller/metal/instrumentation.rb:31:in `block in process_action' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.1.1/lib/active_support/notifications.rb:159:in `block in instrument' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.1.1/lib/active_support/notifications/instrumenter.rb:20:in `instrument' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-4.1.1/lib/active_support/notifications.rb:159:in `instrument' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-4.1.1/lib/action_controller/metal/instrumentation.rb:30:in `process_action' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-4.1.1/lib/action_controller/metal/params_wrapper.rb:250:in `process_action' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/activerecord-4.1.1/lib/active_record/railties/controller_runtime.rb:18:in `process_action' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-4.1.1/lib/abstract_controller/base.rb:136:in `process' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/actionview-4.1.1/lib/action_view/rendering.rb:30:in `process' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-4.1.1/lib/action_controller/test_case.rb:595:in `process' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-4.1.1/lib/action_controller/test_case.rb:64:in `process' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/devise-3.2.4/lib/devise/test_helpers.rb:19:in `block in process' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/devise-3.2.4/lib/devise/test_helpers.rb:72:in `catch' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/devise-3.2.4/lib/devise/test_helpers.rb:72:in `_catch_warden' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/devise-3.2.4/lib/devise/test_helpers.rb:19:in `process' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/actionpack-4.1.1/lib/action_controller/test_case.rb:495:in `get' # ./spec/controllers/SomeController_spec.rb:31:in `block (4 levels) in ' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/example.rb:114:in `instance_eval' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/example.rb:114:in `block in run' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/extensions/instance_eval_with_args.rb:16:in `instance_exec' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/extensions/instance_eval_with_args.rb:16:in `instance_eval_with_args' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/example.rb:247:in `instance_eval_with_args' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/hooks.rb:106:in `block (2 levels) in run' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/example.rb:179:in `call' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/example.rb:179:in `run' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/extensions/instance_eval_with_args.rb:16:in `instance_exec' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/extensions/instance_eval_with_args.rb:16:in `instance_eval_with_args' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/example.rb:247:in `instance_eval_with_args' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/hooks.rb:106:in `block (2 levels) in run' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/hooks.rb:108:in `call' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/hooks.rb:108:in `run' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/hooks.rb:446:in `run_hook' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/example_group.rb:340:in `run_around_each_hooks' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/example.rb:256:in `with_around_each_hooks' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/example.rb:111:in `run' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/example_group.rb:390:in `block in run_examples' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/example_group.rb:386:in `map' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/example_group.rb:386:in `run_examples' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/example_group.rb:371:in `run' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/example_group.rb:372:in `block in run' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/example_group.rb:372:in `map' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/example_group.rb:372:in `run' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/example_group.rb:372:in `block in run' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/example_group.rb:372:in `map' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/example_group.rb:372:in `run' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/command_line.rb:28:in `block (2 levels) in run' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/command_line.rb:28:in `map' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/command_line.rb:28:in `block in run' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/reporter.rb:58:in `report' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/command_line.rb:25:in `run' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/runner.rb:80:in `run' # /Users/Me/.rvm/gems/ruby-2.0.0-p247/gems/rspec-core-2.14.8/lib/rspec/core/runner.rb:17:in `block in autorun'
Pundit的authorize方法不能被称为before_action 。 before_action调用不带参数的方法， authorize采用模型对象和可选的权限名称。 这就是你得到错误的原因。
你没有向我展示足够的相关代码，看看你接下来应该做什么，但我建议让Pundit在你的控制器动作中工作，然后再把它拉回到回调中。
这里有一个正确使用authorize的例子： https ： //github.com/elabs/pundit
您可以在控制器中（或者在所有控制器中使用它的application_controller定义私有帮助器方法，该方法调用authorize current_user ，然后调用private方法before_action 。 像这样：
private def perform_authorization authorize current_user end
然后将其称为before_action ：
before_action :perform_authorization