#<AdminsController: blahbalablah> 的 NameError 未定义局部变量或方法“permitted_params”
NameError undefined local variable or method `permitted_params' for #<AdminsController: blahbalablah>
我正在尝试使用 Devise 和 cancancan 来允许管理员用户创建新用户。我正在通过模式执行此操作，在 application.html.erb 中，当我尝试创建新用户时，表单出现在模式中，一切似乎都很好，但是，当我尝试提交时，它给了我一个名称错误。不知道我哪里出错了，不知道如何改正。
我一直在关注此 Whosebug post
中的建议
这是我在提交表单时收到的错误的屏幕截图：
permitted_params.rb:
class PermittedParams < Struct.new(:params, :current_user)
def user
params.require(:user).permit(*user_attributes)
end
def user_attributes
if current_user.role == 'SuperUser'?
[:email, :password, :password_confirmation, :user_ident, :f_name, :m_name, :l_name, :dob, :role]
else
[:email, :password, :password_confirmation]
end
end
end
管理控制器 - 用于创建新用户
class AdminsController < ApplicationController
before_action :authenticate_user!
def new_user
authorize! :manage, User
@user = User.new
end
def create_user
@user = User.new(permitted_params.user)
authorize! :manage, User
@user = User.find_by_user_ident(params[:id])
if @user.save
format.html { redirect_to root_path, notice: 'User has been successfully created.' }
else
format.html { redirect_to root_path, notice: 'There was a problem creating this user, please try again.' }
end
end
end
application_controller.rb（我这里设置了用户）
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 :set_user
def set_user
@user = User.new
end
end
自定义路线：
as :user do
get "admins/new_user" => "admins#new_user", as: :admins_new_user
post "admins/create_user" => "admins#create_user", as: :admins_create_user
end
我的表单模式：
<!-- Start - Modles -->
<!-- Start - New User Creation -->
<%= form_for(@user, :url => admins_create_user_path) do |f| %>
<div class="modal fade" id="userCreate" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
<div class="modal-dialog modal-lg" role="document">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>
<h4 class="modal-title" id="myModalLabel">Create New System User</h4>
</div>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
<%= f.submit "Create User", :class => 'btn btn-primary' %>
</div>
</div>
</div>
</div>
<% end %>
<!-- End - New User Creation -->
<!-- End - Modles -->
错误的完整堆栈跟踪
NameError - undefined local variable or method `permitted_params' for #<AdminsController:0x007f989a3ab238>:
app/controllers/admins_controller.rb:10:in `create_user'
actionpack (5.0.0.rc1) lib/action_controller/metal/basic_implicit_render.rb:4:in `send_action'
actionpack (5.0.0.rc1) lib/abstract_controller/base.rb:181:in `process_action'
actionpack (5.0.0.rc1) lib/action_controller/metal/rendering.rb:30:in `process_action'
actionpack (5.0.0.rc1) lib/abstract_controller/callbacks.rb:20:in `block in process_action'
activesupport (5.0.0.rc1) lib/active_support/callbacks.rb:126:in `call'
activesupport (5.0.0.rc1) lib/active_support/callbacks.rb:506:in `block (2 levels) in compile'
activesupport (5.0.0.rc1) lib/active_support/callbacks.rb:455:in `call'
activesupport (5.0.0.rc1) lib/active_support/callbacks.rb:101:in `__run_callbacks__'
activesupport (5.0.0.rc1) lib/active_support/callbacks.rb:750:in `_run_process_action_callbacks'
activesupport (5.0.0.rc1) lib/active_support/callbacks.rb:90:in `run_callbacks'
actionpack (5.0.0.rc1) lib/abstract_controller/callbacks.rb:19:in `process_action'
actionpack (5.0.0.rc1) lib/action_controller/metal/rescue.rb:31:in `process_action'
actionpack (5.0.0.rc1) lib/action_controller/metal/instrumentation.rb:32:in `block in process_action'
activesupport (5.0.0.rc1) lib/active_support/notifications.rb:164:in `block in instrument'
activesupport (5.0.0.rc1) lib/active_support/notifications/instrumenter.rb:21:in `instrument'
activesupport (5.0.0.rc1) lib/active_support/notifications.rb:164:in `instrument'
actionpack (5.0.0.rc1) lib/action_controller/metal/instrumentation.rb:30:in `process_action'
actionpack (5.0.0.rc1) lib/action_controller/metal/params_wrapper.rb:248:in `process_action'
activerecord (5.0.0.rc1) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
actionpack (5.0.0.rc1) lib/abstract_controller/base.rb:126:in `process'
actionview (5.0.0.rc1) lib/action_view/rendering.rb:30:in `process'
actionpack (5.0.0.rc1) lib/action_controller/metal.rb:190:in `dispatch'
actionpack (5.0.0.rc1) lib/action_controller/metal.rb:262:in `dispatch'
actionpack (5.0.0.rc1) lib/action_dispatch/routing/route_set.rb:50:in `dispatch'
actionpack (5.0.0.rc1) lib/action_dispatch/routing/route_set.rb:32:in `serve'
actionpack (5.0.0.rc1) lib/action_dispatch/routing/mapper.rb:16:in `block in <class:Constraints>'
actionpack (5.0.0.rc1) lib/action_dispatch/routing/mapper.rb:46:in `serve'
actionpack (5.0.0.rc1) lib/action_dispatch/journey/router.rb:39:in `block in serve'
actionpack (5.0.0.rc1) lib/action_dispatch/journey/router.rb:26:in `each'
actionpack (5.0.0.rc1) lib/action_dispatch/journey/router.rb:26:in `serve'
actionpack (5.0.0.rc1) lib/action_dispatch/routing/route_set.rb:725:in `call'
actionview (5.0.0.rc1) lib/action_view/digestor.rb:12:in `call'
warden (1.2.6) lib/warden/manager.rb:35:in `block in call'
warden (1.2.6) lib/warden/manager.rb:34:in `catch'
warden (1.2.6) lib/warden/manager.rb:34:in `call'
rack (2.0.0.rc1) lib/rack/etag.rb:25:in `call'
rack (2.0.0.rc1) lib/rack/conditional_get.rb:38:in `call'
rack (2.0.0.rc1) lib/rack/head.rb:12:in `call'
rack (2.0.0.rc1) lib/rack/session/abstract/id.rb:222:in `context'
rack (2.0.0.rc1) lib/rack/session/abstract/id.rb:216:in `call'
actionpack (5.0.0.rc1) lib/action_dispatch/middleware/cookies.rb:613:in `call'
activerecord (5.0.0.rc1) lib/active_record/migration.rb:552:in `call'
actionpack (5.0.0.rc1) lib/action_dispatch/middleware/callbacks.rb:38:in `block in call'
activesupport (5.0.0.rc1) lib/active_support/callbacks.rb:97:in `__run_callbacks__'
activesupport (5.0.0.rc1) lib/active_support/callbacks.rb:750:in `_run_call_callbacks'
activesupport (5.0.0.rc1) lib/active_support/callbacks.rb:90:in `run_callbacks'
actionpack (5.0.0.rc1) lib/action_dispatch/middleware/callbacks.rb:36:in `call'
actionpack (5.0.0.rc1) lib/action_dispatch/middleware/executor.rb:12:in `call'
actionpack (5.0.0.rc1) lib/action_dispatch/middleware/remote_ip.rb:79:in `call'
better_errors (2.1.1) lib/better_errors/middleware.rb:84:in `protected_app_call'
better_errors (2.1.1) lib/better_errors/middleware.rb:79:in `better_errors_call'
better_errors (2.1.1) lib/better_errors/middleware.rb:57:in `call'
actionpack (5.0.0.rc1) lib/action_dispatch/middleware/debug_exceptions.rb:49:in `call'
web-console (3.3.0) lib/web_console/middleware.rb:131:in `call_app'
web-console (3.3.0) lib/web_console/middleware.rb:28:in `block in call'
web-console (3.3.0) lib/web_console/middleware.rb:18:in `catch'
web-console (3.3.0) lib/web_console/middleware.rb:18:in `call'
actionpack (5.0.0.rc1) lib/action_dispatch/middleware/show_exceptions.rb:31:in `call'
railties (5.0.0.rc1) lib/rails/rack/logger.rb:36:in `call_app'
railties (5.0.0.rc1) lib/rails/rack/logger.rb:24:in `block in call'
activesupport (5.0.0.rc1) lib/active_support/tagged_logging.rb:70:in `block in tagged'
activesupport (5.0.0.rc1) lib/active_support/tagged_logging.rb:26:in `tagged'
activesupport (5.0.0.rc1) lib/active_support/tagged_logging.rb:70:in `tagged'
railties (5.0.0.rc1) lib/rails/rack/logger.rb:24:in `call'
quiet_assets (1.1.0) lib/quiet_assets.rb:27:in `call_with_quiet_assets'
actionpack (5.0.0.rc1) lib/action_dispatch/middleware/request_id.rb:24:in `call'
rack (2.0.0.rc1) lib/rack/method_override.rb:22:in `call'
rack (2.0.0.rc1) lib/rack/runtime.rb:22:in `call'
activesupport (5.0.0.rc1) lib/active_support/cache/strategy/local_cache_middleware.rb:28:in `call'
actionpack (5.0.0.rc1) lib/action_dispatch/middleware/executor.rb:12:in `call'
actionpack (5.0.0.rc1) lib/action_dispatch/middleware/static.rb:136:in `call'
rack (2.0.0.rc1) lib/rack/sendfile.rb:111:in `call'
railties (5.0.0.rc1) lib/rails/engine.rb:522:in `call'
puma (3.4.0) lib/puma/configuration.rb:224:in `call'
puma (3.4.0) lib/puma/server.rb:569:in `handle_request'
puma (3.4.0) lib/puma/server.rb:406:in `process_client'
puma (3.4.0) lib/puma/server.rb:271:in `block in run'
puma (3.4.0) lib/puma/thread_pool.rb:114:in `block in spawn_thread'
**
EDIT # 1: Adds Registrations Controller and Custom User Show Page Controller
**
注册控制器
class Users::RegistrationsController < Devise::RegistrationsController
private
def sign_up_params
params.require(:user).permit(:email, :password, :password_confirmation, :user_ident, :f_name, :m_name, :l_name, :dob, :role)
end
def account_update_params
params.require(:user).permit(:email, :password, :password_confirmation, :user_ident, :f_name, :m_name, :l_name, :dob, :role)
end
# Sets user to be found by User_Ident #
def set_user
@user = User.find_by_user_ident(params[:id])
end
# Allow Profile Update w/o Current p/w Confirmation
def update_resource(resource, params)
resource.update_without_password(params)
end
# Allow SuperUser / Admin to create all users
def build_resource(hash=nil)
self.resource = resource_class.new_with_session(hash || {}, session)
end
end
用户控制器（仅用于显示自定义用户配置文件）
class UserController < ApplicationController
# Before Actions
before_action :authenticate_user!
def show
@user = User.find_by_user_ident(params[:id])
end
end
所以经过一些修补和尝试之后.. 问题是我在 admin_controller 中没有负责创建新用户的参数。
我还删除了 Permitted_Classes.rb 模型，并替换了 create 方法中的 permittedparams.user 调用，并替换为正确的用户参数。
我正在尝试使用 Devise 和 cancancan 来允许管理员用户创建新用户。我正在通过模式执行此操作，在 application.html.erb 中，当我尝试创建新用户时，表单出现在模式中，一切似乎都很好，但是，当我尝试提交时，它给了我一个名称错误。不知道我哪里出错了，不知道如何改正。
我一直在关注此 Whosebug post
中的建议这是我在提交表单时收到的错误的屏幕截图：
permitted_params.rb:
class PermittedParams < Struct.new(:params, :current_user)
def user
params.require(:user).permit(*user_attributes)
end
def user_attributes
if current_user.role == 'SuperUser'?
[:email, :password, :password_confirmation, :user_ident, :f_name, :m_name, :l_name, :dob, :role]
else
[:email, :password, :password_confirmation]
end
end
end
管理控制器 - 用于创建新用户
class AdminsController < ApplicationController
before_action :authenticate_user!
def new_user
authorize! :manage, User
@user = User.new
end
def create_user
@user = User.new(permitted_params.user)
authorize! :manage, User
@user = User.find_by_user_ident(params[:id])
if @user.save
format.html { redirect_to root_path, notice: 'User has been successfully created.' }
else
format.html { redirect_to root_path, notice: 'There was a problem creating this user, please try again.' }
end
end
end
application_controller.rb（我这里设置了用户）
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 :set_user
def set_user
@user = User.new
end
end
自定义路线：
as :user do
get "admins/new_user" => "admins#new_user", as: :admins_new_user
post "admins/create_user" => "admins#create_user", as: :admins_create_user
end
我的表单模式：
<!-- Start - Modles -->
<!-- Start - New User Creation -->
<%= form_for(@user, :url => admins_create_user_path) do |f| %>
<div class="modal fade" id="userCreate" tabindex="-1" role="dialog" aria-labelledby="myModalLabel">
<div class="modal-dialog modal-lg" role="document">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button>
<h4 class="modal-title" id="myModalLabel">Create New System User</h4>
</div>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
<%= f.submit "Create User", :class => 'btn btn-primary' %>
</div>
</div>
</div>
</div>
<% end %>
<!-- End - New User Creation -->
<!-- End - Modles -->
错误的完整堆栈跟踪
NameError - undefined local variable or method `permitted_params' for #<AdminsController:0x007f989a3ab238>:
app/controllers/admins_controller.rb:10:in `create_user'
actionpack (5.0.0.rc1) lib/action_controller/metal/basic_implicit_render.rb:4:in `send_action'
actionpack (5.0.0.rc1) lib/abstract_controller/base.rb:181:in `process_action'
actionpack (5.0.0.rc1) lib/action_controller/metal/rendering.rb:30:in `process_action'
actionpack (5.0.0.rc1) lib/abstract_controller/callbacks.rb:20:in `block in process_action'
activesupport (5.0.0.rc1) lib/active_support/callbacks.rb:126:in `call'
activesupport (5.0.0.rc1) lib/active_support/callbacks.rb:506:in `block (2 levels) in compile'
activesupport (5.0.0.rc1) lib/active_support/callbacks.rb:455:in `call'
activesupport (5.0.0.rc1) lib/active_support/callbacks.rb:101:in `__run_callbacks__'
activesupport (5.0.0.rc1) lib/active_support/callbacks.rb:750:in `_run_process_action_callbacks'
activesupport (5.0.0.rc1) lib/active_support/callbacks.rb:90:in `run_callbacks'
actionpack (5.0.0.rc1) lib/abstract_controller/callbacks.rb:19:in `process_action'
actionpack (5.0.0.rc1) lib/action_controller/metal/rescue.rb:31:in `process_action'
actionpack (5.0.0.rc1) lib/action_controller/metal/instrumentation.rb:32:in `block in process_action'
activesupport (5.0.0.rc1) lib/active_support/notifications.rb:164:in `block in instrument'
activesupport (5.0.0.rc1) lib/active_support/notifications/instrumenter.rb:21:in `instrument'
activesupport (5.0.0.rc1) lib/active_support/notifications.rb:164:in `instrument'
actionpack (5.0.0.rc1) lib/action_controller/metal/instrumentation.rb:30:in `process_action'
actionpack (5.0.0.rc1) lib/action_controller/metal/params_wrapper.rb:248:in `process_action'
activerecord (5.0.0.rc1) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
actionpack (5.0.0.rc1) lib/abstract_controller/base.rb:126:in `process'
actionview (5.0.0.rc1) lib/action_view/rendering.rb:30:in `process'
actionpack (5.0.0.rc1) lib/action_controller/metal.rb:190:in `dispatch'
actionpack (5.0.0.rc1) lib/action_controller/metal.rb:262:in `dispatch'
actionpack (5.0.0.rc1) lib/action_dispatch/routing/route_set.rb:50:in `dispatch'
actionpack (5.0.0.rc1) lib/action_dispatch/routing/route_set.rb:32:in `serve'
actionpack (5.0.0.rc1) lib/action_dispatch/routing/mapper.rb:16:in `block in <class:Constraints>'
actionpack (5.0.0.rc1) lib/action_dispatch/routing/mapper.rb:46:in `serve'
actionpack (5.0.0.rc1) lib/action_dispatch/journey/router.rb:39:in `block in serve'
actionpack (5.0.0.rc1) lib/action_dispatch/journey/router.rb:26:in `each'
actionpack (5.0.0.rc1) lib/action_dispatch/journey/router.rb:26:in `serve'
actionpack (5.0.0.rc1) lib/action_dispatch/routing/route_set.rb:725:in `call'
actionview (5.0.0.rc1) lib/action_view/digestor.rb:12:in `call'
warden (1.2.6) lib/warden/manager.rb:35:in `block in call'
warden (1.2.6) lib/warden/manager.rb:34:in `catch'
warden (1.2.6) lib/warden/manager.rb:34:in `call'
rack (2.0.0.rc1) lib/rack/etag.rb:25:in `call'
rack (2.0.0.rc1) lib/rack/conditional_get.rb:38:in `call'
rack (2.0.0.rc1) lib/rack/head.rb:12:in `call'
rack (2.0.0.rc1) lib/rack/session/abstract/id.rb:222:in `context'
rack (2.0.0.rc1) lib/rack/session/abstract/id.rb:216:in `call'
actionpack (5.0.0.rc1) lib/action_dispatch/middleware/cookies.rb:613:in `call'
activerecord (5.0.0.rc1) lib/active_record/migration.rb:552:in `call'
actionpack (5.0.0.rc1) lib/action_dispatch/middleware/callbacks.rb:38:in `block in call'
activesupport (5.0.0.rc1) lib/active_support/callbacks.rb:97:in `__run_callbacks__'
activesupport (5.0.0.rc1) lib/active_support/callbacks.rb:750:in `_run_call_callbacks'
activesupport (5.0.0.rc1) lib/active_support/callbacks.rb:90:in `run_callbacks'
actionpack (5.0.0.rc1) lib/action_dispatch/middleware/callbacks.rb:36:in `call'
actionpack (5.0.0.rc1) lib/action_dispatch/middleware/executor.rb:12:in `call'
actionpack (5.0.0.rc1) lib/action_dispatch/middleware/remote_ip.rb:79:in `call'
better_errors (2.1.1) lib/better_errors/middleware.rb:84:in `protected_app_call'
better_errors (2.1.1) lib/better_errors/middleware.rb:79:in `better_errors_call'
better_errors (2.1.1) lib/better_errors/middleware.rb:57:in `call'
actionpack (5.0.0.rc1) lib/action_dispatch/middleware/debug_exceptions.rb:49:in `call'
web-console (3.3.0) lib/web_console/middleware.rb:131:in `call_app'
web-console (3.3.0) lib/web_console/middleware.rb:28:in `block in call'
web-console (3.3.0) lib/web_console/middleware.rb:18:in `catch'
web-console (3.3.0) lib/web_console/middleware.rb:18:in `call'
actionpack (5.0.0.rc1) lib/action_dispatch/middleware/show_exceptions.rb:31:in `call'
railties (5.0.0.rc1) lib/rails/rack/logger.rb:36:in `call_app'
railties (5.0.0.rc1) lib/rails/rack/logger.rb:24:in `block in call'
activesupport (5.0.0.rc1) lib/active_support/tagged_logging.rb:70:in `block in tagged'
activesupport (5.0.0.rc1) lib/active_support/tagged_logging.rb:26:in `tagged'
activesupport (5.0.0.rc1) lib/active_support/tagged_logging.rb:70:in `tagged'
railties (5.0.0.rc1) lib/rails/rack/logger.rb:24:in `call'
quiet_assets (1.1.0) lib/quiet_assets.rb:27:in `call_with_quiet_assets'
actionpack (5.0.0.rc1) lib/action_dispatch/middleware/request_id.rb:24:in `call'
rack (2.0.0.rc1) lib/rack/method_override.rb:22:in `call'
rack (2.0.0.rc1) lib/rack/runtime.rb:22:in `call'
activesupport (5.0.0.rc1) lib/active_support/cache/strategy/local_cache_middleware.rb:28:in `call'
actionpack (5.0.0.rc1) lib/action_dispatch/middleware/executor.rb:12:in `call'
actionpack (5.0.0.rc1) lib/action_dispatch/middleware/static.rb:136:in `call'
rack (2.0.0.rc1) lib/rack/sendfile.rb:111:in `call'
railties (5.0.0.rc1) lib/rails/engine.rb:522:in `call'
puma (3.4.0) lib/puma/configuration.rb:224:in `call'
puma (3.4.0) lib/puma/server.rb:569:in `handle_request'
puma (3.4.0) lib/puma/server.rb:406:in `process_client'
puma (3.4.0) lib/puma/server.rb:271:in `block in run'
puma (3.4.0) lib/puma/thread_pool.rb:114:in `block in spawn_thread'
**
EDIT # 1: Adds Registrations Controller and Custom User Show Page Controller
**
注册控制器
class Users::RegistrationsController < Devise::RegistrationsController
private
def sign_up_params
params.require(:user).permit(:email, :password, :password_confirmation, :user_ident, :f_name, :m_name, :l_name, :dob, :role)
end
def account_update_params
params.require(:user).permit(:email, :password, :password_confirmation, :user_ident, :f_name, :m_name, :l_name, :dob, :role)
end
# Sets user to be found by User_Ident #
def set_user
@user = User.find_by_user_ident(params[:id])
end
# Allow Profile Update w/o Current p/w Confirmation
def update_resource(resource, params)
resource.update_without_password(params)
end
# Allow SuperUser / Admin to create all users
def build_resource(hash=nil)
self.resource = resource_class.new_with_session(hash || {}, session)
end
end
用户控制器（仅用于显示自定义用户配置文件）
class UserController < ApplicationController
# Before Actions
before_action :authenticate_user!
def show
@user = User.find_by_user_ident(params[:id])
end
end
所以经过一些修补和尝试之后.. 问题是我在 admin_controller 中没有负责创建新用户的参数。
我还删除了 Permitted_Classes.rb 模型，并替换了 create 方法中的 permittedparams.user 调用，并替换为正确的用户参数。