def create
@post = Post.find(params[:post_id])
@comment = @post.comments.create(params[:comment])
redirect_to post_path(@post)
end
#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:in
assign_attributes'
activerecord (4.0.0) lib/active_record/core.rb:192:in initialize'
activerecord (4.0.0) lib/active_record/inheritance.rb:27:in
new'
activerecord (4.0.0) lib/active_record/inheritance.rb:27:in new'
activerecord (4.0.0) lib/active_record/reflection.rb:189:in
build_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:in
block 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:in
block 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:in
transaction'
activerecord (4.0.0) lib/active_record/transactions.rb:209:in transaction'
activerecord (4.0.0) lib/active_record/associations/collection_association.rb:151:in
transaction'
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:in
create'
activerecord (4.0.0) lib/active_record/associations/collection_proxy.rb:260:in create'
app/controllers/comments_controller.rb:4:in
create'
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:403:in _run__4265914692226542906__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'
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'
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'
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
run2592313690599090662call_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'
/home/tao/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/webrick/httpserver.rb:138:in
service'
/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:in
block in start_thread'
#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/