Question

我在使用简单表单的rails 4中的远程表单有问题。当我在没有AJAX的情况下使用它时，它可以正常工作，但是一旦我将远程设置为真正的铁轨，就会ActionDispatch::ParamsParser::ParseError说unexpected token at 'utf8=%E2%9C%93&...'。

我不知道是什么导致了这一点，但它可能是非常愚蠢的东西，因为我似乎是唯一拥有它的人：）

这是我正在使用的表单标记：

<%= simple_form_for @profile, remote: true, defaults: { wrapper_html: {:class => 'form-group'}, input_html: { :class => 'form-control' } } do |f| %>

这是跟踪轨道返回给我：

actionpack (4.0.0) lib/action_dispatch/middleware/params_parser.rb:53:in `rescue in parse_formatted_parameters'
actionpack (4.0.0) lib/action_dispatch/middleware/params_parser.rb:32:in `parse_formatted_parameters'
actionpack (4.0.0) lib/action_dispatch/middleware/params_parser.rb:23:in `call'
actionpack (4.0.0) 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 (4.0.0) lib/action_dispatch/middleware/cookies.rb:486:in `call'
activerecord (4.0.0) lib/active_record/query_cache.rb:36:in `call'
activerecord (4.0.0) lib/active_record/connection_adapters/abstract/connection_pool.rb:626:in `call'
activerecord (4.0.0) lib/active_record/migration.rb:369:in `call'
actionpack (4.0.0) lib/action_dispatch/middleware/callbacks.rb:29:in `block in call'
activesupport (4.0.0) lib/active_support/callbacks.rb:373:in `_run__732810880914274126__call__callbacks'
activesupport (4.0.0) lib/active_support/callbacks.rb:80:in `run_callbacks'
actionpack (4.0.0) lib/action_dispatch/middleware/callbacks.rb:27:in `call'
actionpack (4.0.0) lib/action_dispatch/middleware/reloader.rb:64:in `call'
actionpack (4.0.0) lib/action_dispatch/middleware/remote_ip.rb:76:in `call'
actionpack (4.0.0) lib/action_dispatch/middleware/debug_exceptions.rb:17:in `call'
actionpack (4.0.0) lib/action_dispatch/middleware/show_exceptions.rb:30:in `call'
railties (4.0.0) lib/rails/rack/logger.rb:38:in `call_app'
railties (4.0.0) lib/rails/rack/logger.rb:21:in `block in call'
activesupport (4.0.0) lib/active_support/tagged_logging.rb:67:in `block in tagged'
activesupport (4.0.0) lib/active_support/tagged_logging.rb:25:in `tagged'
activesupport (4.0.0) lib/active_support/tagged_logging.rb:67:in `tagged'
railties (4.0.0) lib/rails/rack/logger.rb:21:in `call'
actionpack (4.0.0) 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 (4.0.0) lib/active_support/cache/strategy/local_cache.rb:83:in `call'
rack (1.5.2) lib/rack/lock.rb:17:in `call'
actionpack (4.0.0) lib/action_dispatch/middleware/static.rb:64:in `call'
railties (4.0.0) lib/rails/engine.rb:511:in `call'
railties (4.0.0) 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'
webrick (1.3.1) lib/webrick/httpserver.rb:138:in `service'
webrick (1.3.1) lib/webrick/httpserver.rb:94:in `run'
webrick (1.3.1) lib/webrick/server.rb:191:in `block in start_thread'

非常感谢你的帮助！

Answer 1

它可能不是很多，但对于每个偶然遇到与我相同的问题的人，我终于找到了解决方案：在我的代码库深处有人为jQuery Ajax请求设置全局设置，将content-type设置为JSON。由于Rails使用jQuery Ajax助手但没有使用JSON（但是普通的查询字符串），因为它的远程表单当然Rails解析器检测到格式错误的JSON并抛出错误。删除这些全局设置解决了这个问题。

Answer 2

TL，DR只需删除contentType: "application/json"，

Rails 4远程表单发出错误请求（ParamsParse :: ParseError）

2 个答案: