Rails 向我的 POST 参数添加一个额外的 'command' 对象

Question

Rails 4.1 正在向我的 POST 参数添加一个奇怪的对象，它是我 post 的数据的副本。

作为一个非常基本的测试，我 post 来自 Angular 的简单 {"msg"=>"hello word!"}：

$http.post('/commands/save.json', {msg:'hello word!'}).

Rails 得到：

Started POST "/commands/save.json" for ::1 at 2015-01-08 10:15:55 -0800
  ActiveRecord::SchemaMigration Load (0.3ms)  SELECT `ngconf_schema_migrations`.* FROM `ngconf_schema_migrations`
Processing by CommandsController#save as JSON
  Parameters: {"msg"=>"hello word!", "command"=>{"msg"=>"hello word!"}}
{
        "msg" => "hello word!",
        "controller" => "commands",
        "action" => "save",
        "format" => "json",
        "command" => {
            "msg" => "hello word!"
        }
}
  Commands Load (0.3ms)  SELECT `ngconf_commands`.* FROM `ngconf_commands`
Completed 200 OK in 16ms (Views: 1.5ms | ActiveRecord: 12.8ms)

基本上我想了解这是从哪里来的以及如何阻止它。我不记得 Rails 4.0 这样做了。

        "command" => {
            "msg" => "hello word!"
        }

Answer 1

这来自 ParamsWrapper。您可以通过在控制器中指定 wrap_parameters false 来禁用它。如果您想在应用程序范围内禁用它，请编辑您的 config/initializers/wrap_parameters.rb 并根据评论将 :format 选项设置为空数组。举个例子

# Be sure to restart your server when you modify this file.
#
# This file contains settings for ActionController::ParamsWrapper which
# is enabled by default.

# Enable parameter wrapping for JSON. You can disable this by setting :format to an empty array.
ActiveSupport.on_load(:action_controller) do
  wrap_parameters format: []
end

Rails 向我的 POST 参数添加一个额外的 'command' 对象

Rails adds an extra 'command' object to my POST params

ruby

ruby-on-rails