Ruby on rails 将ActiveResource与Rails 3和REST API一起使用时出错_Ruby On Rails_Rest_Ruby On Rails 3_Activeresource

Ruby on rails 将ActiveResource与Rails 3和REST API一起使用时出错

ruby-on-rails rest ruby-on-rails-3

Ruby on rails 将ActiveResource与Rails 3和REST API一起使用时出错,ruby-on-rails,rest,ruby-on-rails-3,activeresource,Ruby On Rails,Rest,Ruby On Rails 3,Activeresource,我尝试使用Rails 3.0.1访问一个REST API，该API返回： <Sessions> <Session> <Title>This is a sample title</Title> ...Misc </Session> <Session> <Title>Another Title</Title> ...Misc </Session>

我尝试使用Rails 3.0.1访问一个REST API，该API返回：

<Sessions>
  <Session>
    <Title>This is a sample title</Title>
    ...Misc
  </Session>
  <Session>
    <Title>Another Title</Title>
    ...Misc
  </Session>
</Sessions>


这是一个示例标题
…杂项
另一个标题
…杂项

我已设置session.rb类，定义如下：

class Session < ActiveResource::Base
  self.site = "http://example.com/rest"
end

<h1>List Sessions</h1>
<% @sessions.each do |session| %>
  <div><%= session.title %></div>
<% end %>

类会话


将返回XML的url为
然后我有一个控制器，定义如下：
class HomeController < ApplicationController
  def index
    Session.all
  end
end

class HomeController

我的视图index.html.erb的定义如下：
class Session < ActiveResource::Base
  self.site = "http://example.com/rest"
end

<h1>List Sessions</h1>
<% @sessions.each do |session| %>
  <div><%= session.title %></div>
<% end %>

列出会话

当我尝试查看此页面时，出现以下错误：
HomeController#索引中的命名错误
未定义的方法'collect！'为了#

是什么导致了这个问题？我可以很好地访问url（即使使用）。有没有办法调试ActiveResource以查看其内部发生的情况
编辑
以下是堆栈跟踪：
activeresource (3.0.1) lib/active_resource/base.rb:885:in `instantiate_collection'
activeresource (3.0.1) lib/active_resource/base.rb:857:in `find_every'
activeresource (3.0.1) lib/active_resource/base.rb:777:in `find'
activeresource (3.0.1) lib/active_resource/base.rb:803:in `all'
app/controllers/home_controller.rb:4:in `index'
actionpack (3.0.1) lib/action_controller/metal/implicit_render.rb:4:in `send_action'
actionpack (3.0.1) lib/abstract_controller/base.rb:150:in `process_action'
actionpack (3.0.1) lib/action_controller/metal/rendering.rb:11:in `process_action'
actionpack (3.0.1) lib/abstract_controller/callbacks.rb:18:in `block in process_action'
activesupport (3.0.1) lib/active_support/callbacks.rb:435:in `_run__140584718597918073__process_action__4423897468290757938__callbacks'
activesupport (3.0.1) lib/active_support/callbacks.rb:409:in `_run_process_action_callbacks'
activesupport (3.0.1) lib/active_support/callbacks.rb:93:in `run_callbacks'
actionpack (3.0.1) lib/abstract_controller/callbacks.rb:17:in `process_action'
actionpack (3.0.1) lib/action_controller/metal/instrumentation.rb:30:in `block in process_action'
activesupport (3.0.1) lib/active_support/notifications.rb:52:in `block in instrument'
activesupport (3.0.1) lib/active_support/notifications/instrumenter.rb:21:in `instrument'
activesupport (3.0.1) lib/active_support/notifications.rb:52:in `instrument'
actionpack (3.0.1) lib/action_controller/metal/instrumentation.rb:29:in `process_action'
actionpack (3.0.1) lib/action_controller/metal/rescue.rb:17:in `process_action'
actionpack (3.0.1) lib/abstract_controller/base.rb:119:in `process'
actionpack (3.0.1) lib/abstract_controller/rendering.rb:40:in `process'
actionpack (3.0.1) lib/action_controller/metal.rb:133:in `dispatch'
actionpack (3.0.1) lib/action_controller/metal/rack_delegation.rb:14:in `dispatch'
actionpack (3.0.1) lib/action_controller/metal.rb:173:in `block in action'
actionpack (3.0.1) lib/action_dispatch/routing/route_set.rb:62:in `call'
actionpack (3.0.1) lib/action_dispatch/routing/route_set.rb:62:in `dispatch'
actionpack (3.0.1) lib/action_dispatch/routing/route_set.rb:27:in `call'
rack-mount (0.6.13) lib/rack/mount/route_set.rb:148:in `block in call'
rack-mount (0.6.13) lib/rack/mount/code_generation.rb:93:in `block in recognize'
rack-mount (0.6.13) lib/rack/mount/code_generation.rb:68:in `optimized_each'
rack-mount (0.6.13) lib/rack/mount/code_generation.rb:92:in `recognize'
rack-mount (0.6.13) lib/rack/mount/route_set.rb:139:in `call'
actionpack (3.0.1) lib/action_dispatch/routing/route_set.rb:492:in `call'
actionpack (3.0.1) lib/action_dispatch/middleware/best_standards_support.rb:17:in `call'
actionpack (3.0.1) lib/action_dispatch/middleware/head.rb:14:in `call'
rack (1.2.1) lib/rack/methodoverride.rb:24:in `call'
actionpack (3.0.1) lib/action_dispatch/middleware/params_parser.rb:21:in `call'
actionpack (3.0.1) lib/action_dispatch/middleware/flash.rb:182:in `call'
actionpack (3.0.1) lib/action_dispatch/middleware/session/abstract_store.rb:149:in `call'
actionpack (3.0.1) lib/action_dispatch/middleware/cookies.rb:287:in `call'
activerecord (3.0.1) lib/active_record/query_cache.rb:32:in `block in call'
activerecord (3.0.1) lib/active_record/connection_adapters/abstract/query_cache.rb:28:in `cache'
activerecord (3.0.1) lib/active_record/query_cache.rb:12:in `cache'
activerecord (3.0.1) lib/active_record/query_cache.rb:31:in `call'
activerecord (3.0.1) lib/active_record/connection_adapters/abstract/connection_pool.rb:355:in `call'
actionpack (3.0.1) lib/action_dispatch/middleware/callbacks.rb:46:in `block in call'
activesupport (3.0.1) lib/active_support/callbacks.rb:415:in `_run_call_callbacks'
actionpack (3.0.1) lib/action_dispatch/middleware/callbacks.rb:44:in `call'
rack (1.2.1) lib/rack/sendfile.rb:107:in `call'
actionpack (3.0.1) lib/action_dispatch/middleware/remote_ip.rb:48:in `call'
actionpack (3.0.1) lib/action_dispatch/middleware/show_exceptions.rb:46:in `call'
railties (3.0.1) lib/rails/rack/logger.rb:13:in `call'
rack (1.2.1) lib/rack/runtime.rb:17:in `call'
activesupport (3.0.1) lib/active_support/cache/strategy/local_cache.rb:72:in `call'
rack (1.2.1) lib/rack/lock.rb:11:in `block in call'
<internal:prelude>:10:in `synchronize'
rack (1.2.1) lib/rack/lock.rb:11:in `call'
actionpack (3.0.1) lib/action_dispatch/middleware/static.rb:30:in `call'
railties (3.0.1) lib/rails/application.rb:168:in `call'
railties (3.0.1) lib/rails/application.rb:77:in `method_missing'
railties (3.0.1) lib/rails/rack/log_tailer.rb:14:in `call'
rack (1.2.1) lib/rack/content_length.rb:13:in `call'
rack (1.2.1) lib/rack/handler/webrick.rb:52:in `service'
/Users/swright/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/webrick/httpserver.rb:111:in `service'
/Users/swright/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/webrick/httpserver.rb:70:in `run'
/Users/swright/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/webrick/server.rb:183:in `block in start_thread'

activeresource（3.0.1）lib/active\u resource/base.rb:885:in'instantiate\u collection'
activeresource（3.0.1）lib/active\u resource/base.rb:857:in'find\u every'
activeresource（3.0.1）lib/active_resource/base.rb:777:in'find'
activeresource（3.0.1）lib/active_resource/base.rb:803:in'all'
app/controllers/home\u controller.rb:4:in'index'
actionpack（3.0.1）lib/action\u controller/metal/implicit\u render.rb:4:in'send\u action'
actionpack（3.0.1）lib/abstract\u controller/base.rb:150:in'process\u action'
actionpack（3.0.1）lib/action\u controller/metal/rendering.rb:11:in'process\u action'
actionpack（3.0.1）lib/abstract\u controller/callbacks.rb:18:in'block in process\u action'
activesupport（3.0.1）lib/active\u-support/callbacks.rb:435:in`“u-run\u 140584718597918073\u-process\u-action\u 4423897468290757938\u-callbacks”
activesupport（3.0.1）lib/active\u support/callbacks.rb:409:in``运行\进程\操作\回调'
activesupport（3.0.1）lib/active\u support/callbacks.rb:93:in'run\u callbacks'
actionpack（3.0.1）lib/abstract\u controller/callbacks.rb:17:in'process\u action'
actionpack（3.0.1）lib/action\u controller/metal/instrumentation.rb:30:in'block in process\u action'
activesupport（3.0.1）lib/active_support/notifications.rb:52:in'block in instrument'
activesupport（3.0.1）lib/active_support/notifications/instrumenter.rb:21:in'instrument'
activesupport（3.0.1）lib/active_support/notifications.rb:52:in'instrument'
actionpack（3.0.1）lib/action\u controller/metal/instrumentation.rb:29:in'process\u action'
actionpack（3.0.1）lib/action\u controller/metal/rescue.rb:17:in'process\u action'
actionpack（3.0.1）lib/abstract_controller/base.rb:119:正在进行中
actionpack（3.0.1）lib/abstract_controller/rendering.rb:40:in'process'
actionpack（3.0.1）lib/action_controller/metal.rb:133:in'dispatch'
actionpack（3.0.1）lib/action\u controller/metal/rack\u delegation.rb:14:in'dispatch'
actionpack（3.0.1）lib/action_controller/metal.rb:173:in“block in action”
actionpack（3.0.1）lib/action\u dispatch/routing/route\u set.rb:62:in'call'
actionpack（3.0.1）lib/action\u dispatch/routing/route\u set.rb:62:in'dispatch'
actionpack（3.0.1）lib/action\u dispatch/routing/route\u set.rb:27:in'call'
机架安装（0.6.13）lib/rack/mount/route_set.rb:148:in'block in call'
机架安装（0.6.13）lib/rack/mount/code_generation.rb:93:in'block in recognized'
机架安装（0.6.13）lib/rack/mount/code_generation.rb:68:in'optimized_each'
机架安装（0.6.13）lib/rack/mount/code_generation.rb:92:in'recognize'
机架安装（0.6.13）lib/rack/mount/route_set.rb:139:in'call'
actionpack（3.0.1）lib/action\u dispatch/routing/route\u set.rb:492:in'call'
actionpack（3.0.1）lib/action\u dispatch/middleware/best\u standards\u support.rb:17:in'call'
actionpack（3.0.1）lib/action\u dispatch/middleware/head.rb:14:in'call'
rack（1.2.1）lib/rack/methodoverride.rb:24:in'call'
actionpack（3.0.1）lib/action_dispatch/middleware/params_parser.rb:21:in'call'
actionpack（3.0.1）lib/action\u dispatch/middleware/flash.rb:182:in'call'
actionpack（3.0.1）lib/action\u dispatch/middleware/session/abstract\u store.rb:149:in'call'
actionpack（3.0.1）lib/action\u dispatch/middleware/cookies.rb:287:in'call'
activerecord（3.0.1）lib/active\u record/query\u cache.rb:32:in'block in call'
activerecord（3.0.1）lib/active\u record/connection\u adapters/abstract/query\u cache.rb:28:in'cache'
activerecord（3.0.1）lib/active\u record/query\u cache.rb:12:in'cache'
activerecord（3.0.1）lib/active\u record/query\u cache.rb:31:in'call'
activerecord（3.0.1）lib/active\u record/connection\u adapters/abstract/connection\u pool.rb:355:in'call'
actionpack（3.0.1）lib/action\u dispatch/middleware/callbacks.rb:46:in'block in call'
activesupport（3.0.1）lib/active\u support/callbacks.rb:415:in``运行\调用\回调'
actionpack（3.0.1）lib/action\u dispatch/middleware/callbacks.rb:44:in'call'
rack（1.2.1）lib/rack/sendfile.rb:107:in'call'
actionpack（3.0.1）lib/action\u dispatch/middleware/remote\u ip.rb:48:in'call'
actionpack（3.0.1）lib/action\u dispatch/middleware/show\u exceptions.rb:46:in'call'
railties（3.0.1）lib/rails/rack/logger.rb:13:in'call'
rack（1.2.1）lib/rack/runtime.rb:17:in'call'
activesupport（3.0.1）lib/active\u support/cache/strategy/local\u cache.rb:72:in'call'
机架（1.2.1）lib/rack/lock.rb:11:in'block in call'
：10:在“同步”中
机架（1.2.1）lib/rack/lock.rb:11:in'call'
actionpack（3.0.1）lib/action\u dispatch/middleware/static.rb:30:in'call'
railties（3.0.1）lib/rails/application.rb:168:in'call'
railties（3.0.1）lib/rails/application.rb:77:in'method_missing'
railties（3.0.1）lib/rails/rack/log_tailer.rb:14:in'call'
机架（1.2.1）lib/rack/content_length.rb:13:in'call'
rack（1.2.1）lib/rack/handler/webrick.rb:52:in'service'
/Users/swright/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/webrick/httpserver.rb:111:在“服务”中
/Users/swright/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/webrick/httpserver.rb:70:in'run'
/Users/swright/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/webrick/server.rb:183:in'block in start_thread'
简单回答，如果您尝试会话class HomeController < ApplicationController
  def index
    @sessions = Session.all
  end
end

xml.instruct!
xml.posts("type"=>"array") do
  @posts.each do |p|
    xml.post do 
      xml.id("type"=>"integer") do
        p.id
      end
      xml.title p.title
      xml.content p.content
    end
  end
end

xml.instruct!
xml.posts do
  @posts.each do |p|
    xml.post do 
      xml.id p.id
      xml.title p.title
      xml.content p.content
    end
  end
end

class TaxAlert < ActiveResource::Base
  protected

  class CustomFormat
    include ActiveResource::Formats::XmlFormat

    def decode(xml)
      ActiveResource::Formats::XmlFormat.decode(xml)['alert']
    end
  end

  self.format = CustomFormat.new
end