我是初学者......我收到以下错误：
SyntaxError - syntax error, unexpected '(', expecting keyword_end
authorize @vote, :update?(user, record)
^
/Users/louismorin/code/CP299/app/controllers/votes_controller.rb:28: syntax error, unexpected ')', expecting '=':
app/controllers/votes_controller.rb:28:in `'
activesupport (4.0.5) lib/active_support/dependencies.rb:424:in `block in load_file'
activesupport (4.0.5) lib/active_support/dependencies.rb:616:in `new_constants_in'
activesupport (4.0.5) lib/active_support/dependencies.rb:423:in `load_file'
activesupport (4.0.5) lib/active_support/dependencies.rb:324:in `require_or_load'
activesupport (4.0.5) lib/active_support/dependencies.rb:463:in `load_missing_constant'
activesupport (4.0.5) lib/active_support/dependencies.rb:184:in `const_missing'
activesupport (4.0.5) lib/active_support/inflector/methods.rb:226:in `block in constantize'
activesupport (4.0.5) lib/active_support/inflector/methods.rb:224:in `constantize'
activesupport (4.0.5) lib/active_support/dependencies.rb:535:in `get'
activesupport (4.0.5) lib/active_support/dependencies.rb:566:in `constantize'
actionpack (4.0.5) lib/action_dispatch/routing/route_set.rb:76:in `controller_reference'
actionpack (4.0.5) lib/action_dispatch/routing/route_set.rb:66:in `controller'
actionpack (4.0.5) lib/action_dispatch/routing/route_set.rb:44:in `call'
actionpack (4.0.5) lib/action_dispatch/journey/router.rb:71:in `block in call'
actionpack (4.0.5) lib/action_dispatch/journey/router.rb:59:in `call'
actionpack (4.0.5) lib/action_dispatch/routing/route_set.rb:674:in `call'
warden (1.2.3) lib/warden/manager.rb:35:in `block in call'
warden (1.2.3) 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:35:in `call'
rack (1.5.2) lib/rack/head.rb:11:in `call'
actionpack (4.0.5) lib/action_dispatch/middleware/params_parser.rb:27:in `call'
actionpack (4.0.5) 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 (4.0.5) lib/action_dispatch/middleware/cookies.rb:486:in `call'
activerecord (4.0.5) lib/active_record/query_cache.rb:36:in `call'
activerecord (4.0.5) lib/active_record/connection_adapters/abstract/connection_pool.rb:626:in `call'
activerecord (4.0.5) lib/active_record/migration.rb:373:in `call'
actionpack (4.0.5) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
activesupport (4.0.5) lib/active_support/callbacks.rb:373:in `_run__3205659148210679757__call__callbacks'
activesupport (4.0.5) lib/active_support/callbacks.rb:80:in `run_callbacks'
actionpack (4.0.5) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
actionpack (4.0.5) lib/action_dispatch/middleware/reloader.rb:64:in `call'
actionpack (4.0.5) lib/action_dispatch/middleware/remote_ip.rb:76:in `call'
better_errors (2.0.0) lib/better_errors/middleware.rb:84:in `protected_app_call'
better_errors (2.0.0) lib/better_errors/middleware.rb:79:in `better_errors_call'
better_errors (2.0.0) lib/better_errors/middleware.rb:57:in `call'
actionpack (4.0.5) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
actionpack (4.0.5) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
railties (4.0.5) lib/rails/rack/logger.rb:38:in `call_app'
railties (4.0.5) lib/rails/rack/logger.rb:20:in `block in call'
activesupport (4.0.5) lib/active_support/tagged_logging.rb:68:in `block in tagged'
activesupport (4.0.5) lib/active_support/tagged_logging.rb:26:in `tagged'
activesupport (4.0.5) lib/active_support/tagged_logging.rb:68:in `tagged'
railties (4.0.5) lib/rails/rack/logger.rb:20:in `call'
actionpack (4.0.5) 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 (4.0.5) lib/active_support/cache/strategy/local_cache.rb:83:in `call'
rack (1.5.2) lib/rack/lock.rb:17:in `call'
actionpack (4.0.5) lib/action_dispatch/middleware/static.rb:64:in `call'
rack (1.5.2) lib/rack/sendfile.rb:112:in `call'
railties (4.0.5) lib/rails/engine.rb:511:in `call'
railties (4.0.5) lib/rails/application.rb:97:in `call'
rack (1.5.2) lib/rack/lock.rb:17:in `call'
rack (1.5.2) lib/rack/content_length.rb:14:in `call'
rack (1.5.2) lib/rack/handler/webrick.rb:60:in `service'
/Users/louismorin/.rbenv/versions/2.1.2/lib/ruby/2.1.0/webrick/httpserver.rb:138:in `service'
/Users/louismorin/.rbenv/versions/2.1.2/lib/ruby/2.1.0/webrick/httpserver.rb:94:in `run'
/Users/louismorin/.rbenv/versions/2.1.2/lib/ruby/2.1.0/webrick/server.rb:295:in `block in start_thread'
Here is my code for votes_controller.rb:
class VotesController < ApplicationController
before_action :load_post_and_vote
def up_vote
# http://apidock.com/rails/ActionController/Base/redirect_to
update_vote!(1)
redirect_to :back
end
def down_vote
update_vote!(-1)
redirect_to :back
end
private
def load_post_and_vote
# extract into this method the definition of @post and @vote
@post = Post.find(params[:post_id])
@vote = @post.votes.where(user_id: current_user)
end
def update_vote!(new_value)
# Extract vote updating/creating logic here.
# This method has access to @vote, because of the before_action
if @vote
authorize @vote, :update?(user, record)
@vote.update_attribute(:value, 1)
else
@vote = current_user.votes.build(value: 1, post: @post)
authorize @vote, :create?
@vote.save
end
end
end
我想调用这个方法：
def update?(user, record)
can_moderate?
end
当我从：update中删除（用户，记录）时？我得到错误数量的参数错误。当我尝试从主题页面上投票时，我遇到了这个错误。
感谢您的帮助......
我正在使用Pundit进行authorize
class ApplicationController < ActionController::Base
# Prevent CSRF attacks by raising an exception.
# For APIs, you may want to use :null_session instead.
include Pundit
protect_from_forgery with: :exception
before_action :configure_permitted_parameters, if: :devise_controller?
rescue_from Pundit:NotAuthorizedError do |exception|
redirect_to root_url, alert: exception.message
end
protected
def configure_permitted_parameters
devise_parameter_sanitizer.for(:sign_up) << :name
end
end
答案 0 :(得分：0)
Pounit initializes其策略对象包含record和user个参数，但随后会调用不带参数的方法。查看ApplicationPolicy类中的update?方法。它可能不需要参数。
要解决此问题，只需将authorize对象和方法作为符号（:update?）提供。 （记录和用户通过getter方法作为实例变量“传入”。）