Rails 4允许嵌套属性不创建/更新

Question

我将我的rails应用程序（-v3.2.13）转换为rails4。我使用继承的资源gem的覆盖动作（创建！和更新！）。我允许参数的整个哈希值，但它不会创建/更新嵌套的属性。我需要允许参数的整个哈希值。尝试时，出现以下错误。请帮助我解决此问题。

参数

{"foo"=>{"name"=>"1@1", "detail"=>"123", foo1_attributes"=>{"0"=>{"_destroy"=>"", "name"=>"John", "url"=>"johnsmith.blogspot.com",foo2_attributes"=>{"0"=>{"min_time"=>"0", "max_entry"=>"340"}}, "foo3_attributes"=>{"_destroy"=>"", "hours"=>"01", "minutes"=>"00"}, "status"=>"ACTIVE"}}, "foo4_attributes"=>{"0"=>{"image"=>"0","id"=>"1097"}}}, "commit"=>"Save", "foo_id"=>"13", "id"=>"1467"}

我的控制器

def update
 update! do |success, failure|
  success.html { redirect_to foo_path }
 end
end

protected

def resource_params
 params.permit!
end

Foo模型

accepts_nested_attributes_for : foo1,foo2,foo3,foo4
has_many :foo1
has_many :foo2
has_many :foo3
has_many :foo4

跟踪：

 Completed 500 Internal Server Error in 3686ms

 ArgumentError (wrong number of arguments (6 for 1..2)):
  app/controllers/foo_controller.rb:160:in `update'

 protected_attributes (1.0.3) lib/active_record/mass_assignment_security/persistence.rb:60:in `update_attributes'
inherited_resources (1.3.1) lib/inherited_resources/base_helpers.rb:78:in `update_resource'
inherited_resources (1.3.1) lib/inherited_resources/actions.rb:45:in `update'
app/controllers/partner_modules_controller.rb:160:in `update'
actionpack (4.0.0) lib/action_controller/metal/implicit_render.rb:4:in `send_action'
actionpack (4.0.0) lib/abstract_controller/base.rb:189:in `process_action'
actionpack (4.0.0) lib/action_controller/metal/rendering.rb:10:in `process_action'
actionpack (4.0.0) lib/abstract_controller/callbacks.rb:18:in `block in process_action'
activesupport (4.0.0) lib/active_support/callbacks.rb:445:in `block (2 levels) in _run__2668227825050344147__process_action__callbacks'
activesupport (4.0.0) lib/active_support/callbacks.rb:212:in `block in _conditional_callback_around_4134'
rails-observers (0.1.2) lib/rails/observers/action_controller/caching/sweeping.rb:73:in `around'
activesupport (4.0.0) lib/active_support/callbacks.rb:283:in `_callback_around_4133'
activesupport (4.0.0) lib/active_support/callbacks.rb:211:in `_conditional_callback_around_4134'
activesupport (4.0.0) lib/active_support/callbacks.rb:444:in `block in _run__2668227825050344147__process_action__callbacks'
activesupport (4.0.0) lib/active_support/callbacks.rb:215:in `_conditional_callback_around_4135'
activesupport (4.0.0) lib/active_support/callbacks.rb:443:in `_run__2668227825050344147__process_action__callbacks'
activesupport (4.0.0) lib/active_support/callbacks.rb:80:in `run_callbacks'
actionpack (4.0.0) lib/abstract_controller/callbacks.rb:17:in `process_action'
actionpack (4.0.0) lib/action_controller/metal/rescue.rb:29:in `process_action'
actionpack (4.0.0) lib/action_controller/metal/instrumentation.rb:31:in `block in process_action'
activesupport (4.0.0) lib/active_support/notifications.rb:159:in `block in instrument'
activesupport (4.0.0) lib/active_support/notifications/instrumenter.rb:20:in `instrument'
activesupport (4.0.0) lib/active_support/notifications.rb:159:in `instrument'
actionpack (4.0.0) lib/action_controller/metal/instrumentation.rb:30:in `process_action'
actionpack (4.0.0) lib/action_controller/metal/params_wrapper.rb:245:in `process_action'
activerecord (4.0.0) lib/active_record/railties/controller_runtime.rb:18:in `process_action'
actionpack (4.0.0) lib/abstract_controller/base.rb:136:in `process'
actionpack (4.0.0) lib/abstract_controller/rendering.rb:44:in `process'
actionpack (4.0.0) lib/action_controller/metal.rb:195:in `dispatch'
actionpack (4.0.0) lib/action_controller/metal/rack_delegation.rb:13:in `dispatch'
actionpack (4.0.0) lib/action_controller/metal.rb:231:in `block in action'
actionpack (4.0.0) lib/action_dispatch/routing/route_set.rb:80:in `call'
actionpack (4.0.0) lib/action_dispatch/routing/route_set.rb:80:in `dispatch'
actionpack (4.0.0) lib/action_dispatch/routing/route_set.rb:48:in `call'
actionpack (4.0.0) lib/action_dispatch/journey/router.rb:71:in `block in call'
actionpack (4.0.0) lib/action_dispatch/journey/router.rb:59:in `each'
actionpack (4.0.0) lib/action_dispatch/journey/router.rb:59:in `call'
actionpack (4.0.0) lib/action_dispatch/routing/route_set.rb:655:in `call'
newrelic_rpm (3.6.6.147) lib/new_relic/rack/error_collector.rb:43:in `call'
bullet (4.6.0) lib/bullet/rack.rb:13:in `call'
newrelic_rpm (3.6.6.147) lib/new_relic/rack/error_collector.rb:43:in `call'
newrelic_rpm (3.6.6.147) lib/new_relic/rack/agent_hooks.rb:22:in `call'
newrelic_rpm (3.6.6.147) lib/new_relic/rack/browser_monitoring.rb:16:in `call'
warden (1.2.3) lib/warden/manager.rb:35:in `block in call'
warden (1.2.3) lib/warden/manager.rb:34:in `catch'
warden (1.2.3) lib/warden/manager.rb:34:in `call'
rack (1.5.2) lib/rack/etag.rb:23:in `call'
rack (1.5.2) lib/rack/conditionalget.rb:35:in `call'
rack (1.5.2) lib/rack/head.rb:11:in `call'
remotipart (1.2.1) lib/remotipart/middleware.rb:27:in `call'
actionpack (4.0.0) lib/action_dispatch/middleware/params_parser.rb:27: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'
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__994999873434308059__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'
quiet_assets (1.0.2) lib/quiet_assets.rb:18:in `call_with_quiet_assets'
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'
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/content_length.rb:14:in `call'
thin (1.5.1) lib/thin/connection.rb:81:in `block in pre_process'
thin (1.5.1) lib/thin/connection.rb:79:in `catch'
thin (1.5.1) lib/thin/connection.rb:79:in `pre_process'
thin (1.5.1) lib/thin/connection.rb:54:in `process'
thin (1.5.1) lib/thin/connection.rb:39:in `receive_data'
eventmachine (1.0.3) lib/eventmachine.rb:187:in `run_machine'
eventmachine (1.0.3) lib/eventmachine.rb:187:in `run'
thin (1.5.1) lib/thin/backends/base.rb:63:in `start'
thin (1.5.1) lib/thin/server.rb:159:in `start'
rack (1.5.2) lib/rack/handler/thin.rb:16:in `run'
rack (1.5.2) lib/rack/server.rb:264:in `start'
railties (4.0.0) lib/rails/commands/server.rb:84:in `start'
railties (4.0.0) lib/rails/commands.rb:78:in `block in <top (required)>'
railties (4.0.0) lib/rails/commands.rb:73:in `tap'
railties (4.0.0) lib/rails/commands.rb:73:in `<top (required)>'
script/rails:6:in `require'
script/rails:6:in `<main>'

Answer 1

我遇到了类似的问题。 尝试执行以下操作。 假设您需要更新foo1。 使用此作为您的强参数。

def foo_params
  params.require(:foo).permit(:foo1_attributes => [:bar1 , :bar2])
end

做更新。

def update  
  if @foo.update_attributes!(foo_params)      
    redirect_to foo_path
  else
    render foo1_edit_path
  end
end

Answer 2

嗨，您必须以这种方式使用它：

params.require( :foo ).permit( :name, :details, foo1_attributes: [ :_destroy, :name, :url, :id ], foo2_attributes: [ :_destroy, :min_time, :max_entry, :id ] )

它可以解决您的问题。

Answer 3

如“ 强参数自述文件”中所述 ，您可以使用permit! 将参数的整个哈希表列入白名单的方法如下：

params.require(:foo).permit!

执行此操作时，请记住链接自述文件中的以下引号：

使用许可证时应格外小心！ 因为它将允许批量分配所有当前和将来的模型属性。

Answer 4

这可能有点晚了，但我自己面对了这个问题。 希望它可以节省其他人的时间。

使用Rails 4.2.1

这里其他答案的问题在于，它们没有考虑到foo1_attributes的值存在一个array ：

（来自OP的扩展示例）

foo1_attributes"=> {
  "0"=> {
     "_destroy"=>"", "name"=>"John", "url"=>"johnsmith.blogspot.com"
  }
}

因此，您需要同时permit foo1_attributes和foo1_attributes[n]

这是在项目中成功实现类似功能的方式：

（格式为上述OP的示例）

def resource_params
  params.require(:foo)
    .permit(
      :id,
      :name,
      :detail,

      # has_many: :foo1s (Nested Attributes)
        { foo1_attributes: [
          # and the values for each `foo1` in `foo1_attributes`
          [
            :name,
            :url
          ]
        ]},

      # has_many: :foo2s (Nested Attributes)
        { foo2_attributes: [
          # and the values for each `foo2` in `foo2_attributes`
          [
            :min_time,
            :max_entry
          ]
        ]}

      # etc...
    )

其他注意事项...

• 嵌套属性（即数组）的代码可能需要放在permit的末尾
• 根据您的实现方式，您可能还需要包含每个id （有关此答案，请参见评分最高的评论）
• 我的具体实现涉及has_many :through
• 如果您打算删除它们，还需要包括:_destroy

Answer 5

以此替换当前的强参数：

def permitted_params
    params.permit(:widget => [:permitted_field, :other_permitted_field])
end

更多信息： https : //github.com/josevalim/inherited_resources#strong-parameters

Answer 6

我相信您的resource_params方法应称为permitted_params 。 有关如何处理强参数的更多详细信息，请参见“继承的资源”文档 。

Answer 7

我不认为这是与参数有关的强错误。 在Rails 4.0中，如果未将参数列入白名单，则它会静默失败，并且不会创建对象。 我前阵子遇到这个错误，我也不知道该如何解决，但是您可以发布您的route.rb文件，并在控制器中包含new和create方法吗？ 我很确定您的错误是在资源嵌套中。