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Ruby Rails 5升级：在：ActionDispatch:：ParamsParser（RuntimeError）之后没有插入这样的中间件_Ruby_Rack_Middleware_Ruby On Rails 5 - Fatal编程技术网
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Ruby Rails 5升级：在：ActionDispatch:：ParamsParser（RuntimeError）之后没有插入这样的中间件

ruby

Ruby Rails 5升级：在：ActionDispatch:：ParamsParser（RuntimeError）之后没有插入这样的中间件,ruby,rack,middleware,ruby-on-rails-5,Ruby,Rack,Middleware,Ruby On Rails 5,我正在开发中将一个应用程序从Rails 4.2升级到Rails 5 beta1.1。该应用程序在升级前运行良好。我已经完成了基本的升级步骤（更新Ruby、更新Rails，以及以下相关步骤：）。Gemfile也已更新为最新的Gems 当我运行$rails中间件或$rails控制台或$rails服务器时，会出现以下错误： No such middleware to insert after: ActionDispatch::ParamsParser .../.rvm/gems/ruby-2.3.0/

我正在开发中将一个应用程序从Rails 4.2升级到Rails 5 beta1.1。该应用程序在升级前运行良好。我已经完成了基本的升级步骤（更新Ruby、更新Rails，以及以下相关步骤：）。Gemfile也已更新为最新的Gems

当我运行$rails中间件或$rails控制台或$rails服务器时，会出现以下错误：

No such middleware to insert after: ActionDispatch::ParamsParser
.../.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/actionpack/lib/action_dispatch/middleware/stack.rb:108:in `assert_index'
.../.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/actionpack/lib/action_dispatch/middleware/stack.rb:80:in `insert_after'
.../.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/configuration.rb:69:in `block in merge_into'
.../.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/configuration.rb:68:in `each'
.../.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/configuration.rb:68:in `merge_into'
.../.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/engine.rb:507:in `block in app'
.../.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/engine.rb:504:in `synchronize'
.../.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/engine.rb:504:in `app'
.../.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/application/finisher.rb:34:in `block in <module:Finisher>'
.../.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/initializable.rb:30:in `instance_exec'
.../.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/initializable.rb:30:in `run'
.../.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/initializable.rb:55:in `block in run_initializers'
.../.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/initializable.rb:54:in `run_initializers'
.../.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/application.rb:350:in `initialize!'
.../config/environment.rb:5:in `<top (required)>'
.../.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/activesupport/lib/active_support/dependencies.rb:302:in `require'
.../.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/activesupport/lib/active_support/dependencies.rb:302:in `block in require'
.../.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/activesupport/lib/active_support/dependencies.rb:268:in `load_dependency'
.../.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/activesupport/lib/active_support/dependencies.rb:302:in `require'
.../.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/application.rb:326:in `require_environment!'
.../.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/application.rb:446:in `block in run_tasks_blocks'
.../.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/commands/rake_proxy.rb:13:in `block in run_rake_task'
.../.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/commands/rake_proxy.rb:10:in `run_rake_task'
.../.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/commands/commands_tasks.rb:51:in `run_command!'
.../.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/command.rb:20:in `run'
.../.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/commands.rb:19:in `<top (required)>'
bin/rails:4:in `require'
bin/rails:4:in `<main>'

在：ActionDispatch:：ParamsParser之后没有要插入的中间件
…/.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/actionpack/lib/action\u dispatch/middleware/stack.rb:108:in'assert\u index'
…/.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/actionpack/lib/action\u dispatch/middleware/stack.rb:80:in'insert\u after'
…/.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/configuration.rb:69:在“合并中的块”中
…/.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/configuration.rb:68:in'each'
…/.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/configuration.rb:68:in'merge_-in'
…/.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/engine.rb:507:在“应用程序中的块”中
…/.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/engine.rb:504:在“同步”中
…/.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/engine.rb:504:in'app'
…/.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/application/finisher.rb:34:in'block in'
…/.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/initializable.rb:30:in'instance_exec'
…/.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/initializable.rb:30:in'run'
…/.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/initializable.rb:55:在“运行中的块初始化器”中
…/.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/initializable.rb:54:in'run_initializers'
…/.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/application.rb:350:in'initialize！'
…/config/environment.rb:5:in`'
…/.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/activesupport/lib/active\u support/dependencies.rb:302:in'require'
…/.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/activesupport/lib/active\u support/dependencies.rb:302:在“请求中的块”中
…/.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/activesupport/lib/active\u support/dependencies.rb:268:in'load\u dependencity'
…/.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/activesupport/lib/active\u support/dependencies.rb:302:in'require'
…/.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/application.rb:326:in'require_environment！'
…/.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/application.rb:446:in `运行任务中的块'
…/.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/commands/rake\u proxy.rb:13:在“运行中的块\rake\u任务”中
…/.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/commands/rake_proxy.rb:10:in'run_rake_task'
…/.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/commands/commands_tasks.rb:51:in'run_command！'
…/.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/command.rb:20:in'run'
…/.rvm/gems/ruby-2.3.0/bundler/gems/rails-dbf67b3a6f54/railties/lib/rails/commands.rb:19:in`'
箱子/轨道：4:在'require'中
箱子/轨道：4:in`'
这与ActionDispatch:：ParamsParser已从Rails 5 beta中间件（）中删除有关。但是，在某种程度上，我的应用程序似乎仍在寻找它

我在config/application.rb中使用ActionDispatch:：ParamsParser尝试了各种方法，例如删除它，如果不起作用，我还尝试添加它。同样的错误。有没有办法克服这个错误？

我相信这个错误是由一个尚未为Rails 5更新的gem引起的。我一直在使用gem remotipart（）。这很有帮助。当我从gem文件中删除它时，问题中指出的错误消失了。

您好，您当时使用了什么来代替remoteit？我最终用javascript从表单输入中获取数据，并执行AJAX post调用来提交表单。可能不是“rails方式”，但我发现它是提交远程表单的一个灵活解决方案。同样的错误，我带来了一个部分解决方案，因为这个PR（）还没有集成：将它添加到您的gemfile
gem'remotipart'，'~>1.2'，github:'pedantix/remotipart'，ref:'7f7989db57297616c038c335bbc1d8230af78'