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新手问题 ActiveModel::ForbiddenAttributesError 急求 解决

lianyutao · 2013年07月31日 · 最后由 edgar_wang_cn 回复于 2013年07月31日 · 3951 次阅读 
def create
  @post = Post.find(params[:post_id])
  @comment = @post.comments.create(params[:comment])
  redirect_to post_path(@post)
end
edgar_wang_cn #1 2013年07月31日

用的 rails4 么？

lianyutao #2 2013年07月31日

不是，是 3

edgar_wang_cn #4 2013年07月31日

#3 楼 @lianyutao 可以贴一下更详细的出错信息么

edgar_wang_cn #6 2013年07月31日

#5 楼 @lianyutao 图片看着好小。。。你在 Post 的 Model 里设置了 has_many: comments 了么

edgar_wang_cn #9 2013年07月31日

#8 楼 @lianyutao 你点一下出错页面的 Full Trace，然后把出错信息粘上来

lianyutao #10 2013年07月31日

#9 楼 @edgar_wang_cn activemodel (4.0.0) lib/active_model/forbidden_attributes_protection.rb:21:in sanitize_for_mass_assignment' activerecord (4.0.0) lib/active_record/attribute_assignment.rb:21:inassign_attributes' activerecord (4.0.0) lib/active_record/core.rb:192:in initialize' activerecord (4.0.0) lib/active_record/inheritance.rb:27:innew' activerecord (4.0.0) lib/active_record/inheritance.rb:27:in new' activerecord (4.0.0) lib/active_record/reflection.rb:189:inbuild_association' activerecord (4.0.0) lib/active_record/associations/association.rb:242:in build_record' activerecord (4.0.0) lib/active_record/associations/collection_association.rb:461:inblock in create_record' activerecord (4.0.0) lib/active_record/associations/collection_association.rb:152:in block in transaction' activerecord (4.0.0) lib/active_record/connection_adapters/abstract/database_statements.rb:202:inblock in transaction' activerecord (4.0.0) lib/active_record/connection_adapters/abstract/database_statements.rb:210:in within_new_transaction' activerecord (4.0.0) lib/active_record/connection_adapters/abstract/database_statements.rb:202:intransaction' activerecord (4.0.0) lib/active_record/transactions.rb:209:in transaction' activerecord (4.0.0) lib/active_record/associations/collection_association.rb:151:intransaction' activerecord (4.0.0) lib/active_record/associations/collection_association.rb:460:in create_record' activerecord (4.0.0) lib/active_record/associations/collection_association.rb:121:increate' activerecord (4.0.0) lib/active_record/associations/collection_proxy.rb:260:in create' app/controllers/comments_controller.rb:4:increate' 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:inprocess_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:inblock in process_action' activesupport (4.0.0) lib/active_support/callbacks.rb:403:in _run__4265914692226542906__process_action__callbacks' activesupport (4.0.0) lib/active_support/callbacks.rb:80:inrun_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:inprocess_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:inblock 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:ininstrument' 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:inprocess_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:inprocess' actionpack (4.0.0) lib/abstract_controller/rendering.rb:44:in process' actionpack (4.0.0) lib/action_controller/metal.rb:195:indispatch' actionpack (4.0.0) lib/action_controller/metal/rack_delegation.rb:13:in dispatch' actionpack (4.0.0) lib/action_controller/metal.rb:231:inblock 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:indispatch' 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:inblock 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:incall' actionpack (4.0.0) lib/action_dispatch/routing/route_set.rb:655:in call' rack (1.5.2) lib/rack/etag.rb:23:incall' rack (1.5.2) lib/rack/conditionalget.rb:35:in call' rack (1.5.2) lib/rack/head.rb:11:incall' 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:incall' rack (1.5.2) lib/rack/session/abstract/id.rb:225:in context' rack (1.5.2) lib/rack/session/abstract/id.rb:220:incall' actionpack (4.0.0) lib/action_dispatch/middleware/cookies.rb:486:in call' activerecord (4.0.0) lib/active_record/query_cache.rb:36:incall' 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:incall' 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:inrun2592313690599090662call_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:incall' 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:incall' 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:incall' railties (4.0.0) lib/rails/rack/logger.rb:38:in call_app' railties (4.0.0) lib/rails/rack/logger.rb:21:inblock 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:intagged' activesupport (4.0.0) lib/active_support/tagged_logging.rb:67:in tagged' railties (4.0.0) lib/rails/rack/logger.rb:21:incall' actionpack (4.0.0) lib/action_dispatch/middleware/request_id.rb:21:in call' rack (1.5.2) lib/rack/methodoverride.rb:21:incall' rack (1.5.2) lib/rack/runtime.rb:17:in call' activesupport (4.0.0) lib/active_support/cache/strategy/local_cache.rb:83:incall' rack (1.5.2) lib/rack/lock.rb:17:in call' actionpack (4.0.0) lib/action_dispatch/middleware/static.rb:64:incall' railties (4.0.0) lib/rails/engine.rb:511:in call' railties (4.0.0) lib/rails/application.rb:97:incall' rack (1.5.2) lib/rack/lock.rb:17:in call' rack (1.5.2) lib/rack/content_length.rb:14:incall' rack (1.5.2) lib/rack/handler/webrick.rb:60:in service' /home/tao/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/webrick/httpserver.rb:138:inservice' /home/tao/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/webrick/httpserver.rb:94:in run' /home/tao/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/webrick/server.rb:295:inblock in start_thread'

edgar_wang_cn #11 2013年07月31日

#10 楼 @lianyutao 呃，你这是 4.0 了。。应该用

@comment = @post.comments.create(params[:comment].permit(:commenter, :body))

这样的形式，具体可以看看http://weblog.rubyonrails.org/2012/3/21/strong-parameters/

1 个赞
lianyutao #12 2013年07月31日

#11 楼 @edgar_wang_cn 为什么我用 rails -v 的时候显示的不是 rails 4.0

edgar_wang_cn #13 2013年07月31日

#12 楼 @lianyutao 贴一下你的 Gemfile

lianyutao #14 2013年07月31日

#13 楼 @edgar_wang_cn Gemfile 显示的是 4.0.0 gem 'rails', '4.0.0'

edgar_wang_cn #15 2013年07月31日

#14 楼 @lianyutao - -。那你用的不就是 rails4 么。。。

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