Heroku Scheduler：Credits定义的LocalController：Class的未定义局部变量或方法`params' [英] Heroku Scheduler: undefined local variable or method `params' for CreditsController:Class

问题描述

我试图用Heroku Scheduler自动执行任务。我在本地测试了这个任务，它工作正常。我创建了一个临时路由进行测试，并且每当我点击路由时它都会工作： create_expired_lines'

credits.controller.rb

  class CreditsController< ApplicationController 
 ... 
 
 def self.create_expired_lines 
 ... 
 @new_credit = Credit.new（params [：credit]）
 .. 。
 end 
  

然后我创建了一个文件

  app / lib / tasks / scheduler.rake 
 
 desc此任务由Heroku调度程序加载项
任务：create_expired_credit_lines => ：环境做
放置创建过期的信用额度......
 CreditsController.create_expired_lines 
放置完成。 
 end 
  

执行任务时，出现以下错误：

  2014-03-20T21：42：11.190318 + 00：00 app [scheduler.4496]：Credits定义的未定义局部变量或方法`params' ：Class 
  

完整日志：

  2014-03-20T21：42：06.228208 + 00：00 heroku [scheduler.4496]：用命令`bundle exec rake create_expired_credit_lines`启动进程
 2014-03-20T21：42： 08.725450 + 00：00 heroku [scheduler.4496]：状态从开始改为
 2014-03-20T21：42：09.410565 + 00：00 app [scheduler.4496]：弃权警告：您的Rails 2.3-风格的插件在供应商/插件！在Rails 4.0中将会删除对这些插件的支持。将它们移出并将它们捆绑到Gemfile中，或者将它们作为lib / myplugin / *和config / initializers / myplugin.rb折叠到您的应用程序中。有关更多信息，请参阅发行说明：http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released。 （从/ app / Rakefile中的< top（required）>调用：7）
 2014-03-20T21：42：09.410565 + 00：00 app [scheduler.4496]：DEPRECATION警告：您有Rails 2.3供应商/插件中的插件！在Rails 4.0中将会删除对这些插件的支持。将它们移出并将它们捆绑到Gemfile中，或者将它们作为lib / myplugin / *和config / initializers / myplugin.rb折叠到您的应用程序中。有关更多信息，请参阅发行说明：http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released。 （从/ app / Rakefile中的< top（required）>调用：7）
 2014-03-20T21：42：10.274625 + 00：00 app [scheduler.4496]：连接到由DATABASE_URL指定的数据库
 2014-03-20T21：42：10.563939 + 00：00 app [scheduler.4496]：[已弃用] I18n.enforce_available_locales将在未来默认为true。如果你真的想跳过你的语言环境验证，你可以设置I18n.enforce_available_locales = false来避免这个消息。 
 2014-03-20T21：42：10.852664 + 00：00 app [scheduler.4496]：创建过期的信用额度... 
 2014-03-20T21：42：11.190030 + 00：00 app [ scheduler.4496]：rake中止！ 
 2014-03-20T21：42：11.191365 + 00：00 app [scheduler.4496]：/app/vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.11/lib/active_record/relation /delegation.rb:6:in`each'
 2014-03-20T21：42：11.191365 + 00：00 app [scheduler.4496]：/app/vendor/bundle/ruby/1.9.1/gems/ activerecord-3.2.11 / lib / active_record / relation / delegation.rb：6：在`each'
 2014-03-20T21：42：11.191365 + 00：00 app [scheduler.4496]：/ app / app /controllers/credits_controller.rb:147:in`create_expired_lines'
 2014-03-20T21：42：11.191569 + 00：00 app [scheduler.4496] :(通过使用--trace运行任务查看完整跟踪）
 2014-03-20T21：42：11.191365 + 00：00 app [scheduler.4496]：/app/app/controllers/credits_controller.rb:158:in`block in create_expired_lines'
 2014-03- 20T21：42：11.190318 + 00：00 app [scheduler.4496]：Credits定义的未定义局部变量或方法`params'：Class 
 2014-03-20T21：42：11.191478 + 00：00 app [scheduler.4496 ]：任务：TOP => create_expired_credit_lines 
 2014-03-20T21：42：11.191365 + 00：00 app [scheduler.4496]：/app/lib/tasks/scheduler.rake:4:in`block in< top（required）> '
 2014-03-20T21：42：12.567208 + 00：00 heroku [scheduler.4496]：进程退出状态1 
 2014-03-20T21：42：12.576344 + 00：00 heroku [scheduler .4496]：状态从最新改为完成
  

===========

UPDATE：
我从Credit.new（params [：credit]）方法中删除了参数，它现在看起来像这样：

credits.controller.rb

  class CreditsController< ApplicationController 
 ... 
 def new 
 ... 
 @credit = Credit.new 
 @ credit.user_id = params [：id] 
。 .. 
 end 
 
 
 def self.create_expired_lines 
 ... 
 @new_credit = Credit.new（params [：credit]）
 ... 
 end 
  

当我运行命令时

  $ heroku run rake create_expired_credit_lines 
  

我得到以下错误：

 运行`rake create_expired_credit_lines`附加到终端... up，run.3757 
拒绝警告：您在供应商/插件中使用Rails 2.3风格的插件！在Rails 4.0中将会删除对这些插件的支持。将它们移出并将它们捆绑到Gemfile中，或者将它们作为lib / myplugin / *和config / initializers / myplugin.rb折叠到您的应用程序中。有关更多信息，请参阅发行说明：http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released。 （从/ app / Rakefile中的< top（required）>调用：7）
 DEPRECATION WARNING：在供应商/插件中有Rails 2.3风格的插件！在Rails 4.0中将会删除对这些插件的支持。将它们移出并将它们捆绑到Gemfile中，或者将它们作为lib / myplugin / *和config / initializers / myplugin.rb折叠到您的应用程序中。有关更多信息，请参阅发行说明：http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released。 （从/ app / Rakefile中的< top（required）>调用：7）
连接到由DATABASE_URL指定的数据库
 [不建议] I18n.enforce_available_locales将在默认情况下为true。如果你真的想跳过你的语言环境验证，你可以设置I18n.enforce_available_locales = false来避免这个消息。 
创建过期的信用额度... 
耙子中止！ 
对于CreditsController：
 /app/app/controllers/credits_controller.rb:177:in`block in create_expired_lines'$ b $ app / vendor / bundle / ruby / 1.9.1 / gems / activerecord- 3.2.11 / lib / active_record / relation / delegation.rb：6：在'each'中
 /app/vendor/bundle/ruby/1.9.1/gems/activerecord -3.2.11 / lib / active_record / relation / delegation.rb：6：在`each'
 /app/app/controllers/credits_controller.rb:154:in`create_expired_lines'
 / app / lib /tasks/scheduler.rake:4:in`block in< top（required）>'
 Tasks：TOP => create_expired_credit_lines 
（通过使用-trace运行任务来查看完整跟踪）
  

解决方案

您应该使用参数定义 create_expired_lines 方法

  def self.create_expired_lines（args）
 ... 
 @new_credit = Credit.new（args）
 ... 
 end 
  
 
 
 
因为您无法在此级别访问参数哈希。
 
 
 
可以使用适当的参数从RSpec调用此方法。
 
 
 
例如： 
 
 
  CreditsController.create_expired_lines（attr1：value，attr2：value）
  
 
I am trying to automate a task with Heroku Scheduler. I tested the task in local and it works. I created a temporary route for testing, and it works everytime I hit the route:
get 'create_expired_credit_lines' to: 'credits#create_expired_lines'
credits.controller.rb
class CreditsController < ApplicationController
...

 def self.create_expired_lines
 ...
  @new_credit = Credit.new(params[:credit])
 ...
 end
I then created a file 
app/lib/tasks/scheduler.rake

desc "This task is called by the Heroku scheduler add-on"
task :create_expired_credit_lines => :environment do
  puts "Creating expired credit lines..."
  CreditsController.create_expired_lines
  puts "done."
end
When the tasks get executed, I get the following error:
2014-03-20T21:42:11.190318+00:00 app[scheduler.4496]: undefined local variable or method `params' for CreditsController:Class
Full log:
2014-03-20T21:42:06.228208+00:00 heroku[scheduler.4496]: Starting process with command `bundle exec rake create_expired_credit_lines`
2014-03-20T21:42:08.725450+00:00 heroku[scheduler.4496]: State changed from starting to up
2014-03-20T21:42:09.410565+00:00 app[scheduler.4496]: DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/Rakefile:7)
 2014-03-20T21:42:09.410565+00:00 app[scheduler.4496]: DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/Rakefile:7)
2014-03-20T21:42:10.274625+00:00 app[scheduler.4496]: Connecting to database specified by DATABASE_URL
2014-03-20T21:42:10.563939+00:00 app[scheduler.4496]: [deprecated] I18n.enforce_available_locales will default to true in the future. If you really want to skip validation of your locale you can set I18n.enforce_available_locales = false to avoid this message.
2014-03-20T21:42:10.852664+00:00 app[scheduler.4496]: Creating expired credit lines...
2014-03-20T21:42:11.190030+00:00 app[scheduler.4496]: rake aborted!
2014-03-20T21:42:11.191365+00:00 app[scheduler.4496]: /app/vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.11/lib/active_record/relation/delegation.rb:6:in `each'
2014-03-20T21:42:11.191365+00:00 app[scheduler.4496]: /app/vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.11/lib/active_record/relation/delegation.rb:6:in `each'
2014-03-20T21:42:11.191365+00:00 app[scheduler.4496]: /app/app/controllers/credits_controller.rb:147:in `create_expired_lines'
2014-03-20T21:42:11.191569+00:00 app[scheduler.4496]: (See full trace by running task with --trace)
2014-03-20T21:42:11.191365+00:00 app[scheduler.4496]: /app/app/controllers/credits_controller.rb:158:in `block in create_expired_lines'
2014-03-20T21:42:11.190318+00:00 app[scheduler.4496]: undefined local variable or method `params' for CreditsController:Class
2014-03-20T21:42:11.191478+00:00 app[scheduler.4496]: Tasks: TOP => create_expired_credit_lines
2014-03-20T21:42:11.191365+00:00 app[scheduler.4496]: /app/lib/tasks/scheduler.rake:4:in `block in <top (required)>'
2014-03-20T21:42:12.567208+00:00 heroku[scheduler.4496]: Process exited with status 1
2014-03-20T21:42:12.576344+00:00 heroku[scheduler.4496]: State changed from up to complete
===========


UPDATE:
I removed the arguments from the method Credit.new(params[:credit]) and it now looks like this:

credits.controller.rb
class CreditsController < ApplicationController
...
def new
...
@credit = Credit.new
@credit.user_id = params[:id]
... 
end


 def self.create_expired_lines
 ...
  @new_credit = Credit.new(params[:credit])
 ...
 end
When I run the command 
$ heroku run rake create_expired_credit_lines
I get the following errors:
Running `rake create_expired_credit_lines` attached to terminal... up, run.3757
DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/Rakefile:7)
DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/Rakefile:7)
Connecting to database specified by DATABASE_URL
[deprecated] I18n.enforce_available_locales will default to true in the future. If you really want to     skip validation of your locale you can set I18n.enforce_available_locales = false to avoid this message.
Creating expired credit lines...
rake aborted!
undefined local variable or method `params' for CreditsController:Class
/app/app/controllers/credits_controller.rb:177:in `block in create_expired_lines'
/app/vendor/bundle/ruby/1.9.1/gems/activerecord-  3.2.11/lib/active_record/relation/delegation.rb:6:in `each'
 /app/vendor/bundle/ruby/1.9.1/gems/activerecord-3.2.11/lib/active_record/relation/delegation.rb:6:in `each'
/app/app/controllers/credits_controller.rb:154:in `create_expired_lines'
/app/lib/tasks/scheduler.rake:4:in `block in <top (required)>'
Tasks: TOP => create_expired_credit_lines
(See full trace by running task with --trace)

解决方案
You should define the create_expired_lines method with arguments
def self.create_expired_lines(args)
 ...
  @new_credit = Credit.new(args)
 ...
 end
As you don't have access to params hash at this level.

And you can call this method from RSpec with proper arguments.

For eg:
CreditsController.create_expired_lines(attr1: value, attr2: value)


                        
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