如何使行爲-AS-加標籤，工作和Rails 3.2.1

Question

當我使用行爲-AS-加標籤上使用Rails 3.2.1，它給我的錯誤：

超：沒有超類方法` tag_list =」＃爲

activemodel (3.2.1) lib/active_model/attribute_methods.rb:404:in `method_missing' 
activerecord (3.2.1) lib/active_record/attribute_methods.rb:126:in `method_missing' 
app/models/post.rb:126:in `tag_list=' 
activerecord (3.2.1) lib/active_record/attribute_assignment.rb:85:in `send' 
activerecord (3.2.1) lib/active_record/attribute_assignment.rb:85:in `assign_attributes' 
activerecord (3.2.1) lib/active_record/attribute_assignment.rb:78:in `each' 
activerecord (3.2.1) lib/active_record/attribute_assignment.rb:78:in `assign_attributes' 
activerecord (3.2.1) lib/active_record/base.rb:495:in `initialize' 
app/controllers/posts_controller.rb:28:in `new' 
app/controllers/posts_controller.rb:28:in `create' 
actionpack (3.2.1) lib/action_controller/metal/implicit_render.rb:4:in `send_action' 
actionpack (3.2.1) lib/action_controller/metal/implicit_render.rb:4:in `send_action' 
actionpack (3.2.1) lib/abstract_controller/base.rb:167:in `process_action' 
actionpack (3.2.1) lib/action_controller/metal/rendering.rb:10:in `process_action' 
actionpack (3.2.1) lib/abstract_controller/callbacks.rb:18:in `process_action' 
activesupport (3.2.1) lib/active_support/callbacks.rb:414:in `_run__779271071__process_action__567720547__callbacks' 
activesupport (3.2.1) lib/active_support/callbacks.rb:405:in `send' 
activesupport (3.2.1) lib/active_support/callbacks.rb:405:in `__run_callback' 
activesupport (3.2.1) lib/active_support/callbacks.rb:385:in `_run_process_action_callbacks' 
activesupport (3.2.1) lib/active_support/callbacks.rb:81:in `send' 
activesupport (3.2.1) lib/active_support/callbacks.rb:81:in `run_callbacks' 
actionpack (3.2.1) lib/abstract_controller/callbacks.rb:17:in `process_action' 
actionpack (3.2.1) lib/action_controller/metal/rescue.rb:29:in `process_action' 
actionpack (3.2.1) lib/action_controller/metal/instrumentation.rb:30:in `process_action' 
activesupport (3.2.1) lib/active_support/notifications.rb:123:in `instrument' 
activesupport (3.2.1) lib/active_support/notifications/instrumenter.rb:20:in `instrument' 
activesupport (3.2.1) lib/active_support/notifications.rb:123:in `instrument' 
actionpack (3.2.1) lib/action_controller/metal/instrumentation.rb:29:in `process_action' 
actionpack (3.2.1) lib/action_controller/metal/params_wrapper.rb:205:in `process_action' 
activerecord (3.2.1) lib/active_record/railties/controller_runtime.rb:18:in `process_action' 
actionpack (3.2.1) lib/abstract_controller/base.rb:121:in `process' 
actionpack (3.2.1) lib/abstract_controller/rendering.rb:45:in `process' 
actionpack (3.2.1) lib/action_controller/metal.rb:203:in `dispatch' 
actionpack (3.2.1) lib/action_controller/metal/rack_delegation.rb:14:in `dispatch' 
actionpack (3.2.1) lib/action_controller/metal.rb:246:in `action' 
actionpack (3.2.1) lib/action_dispatch/routing/route_set.rb:66:in `call' 
actionpack (3.2.1) lib/action_dispatch/routing/route_set.rb:66:in `dispatch' 
actionpack (3.2.1) lib/action_dispatch/routing/route_set.rb:30:in `call' 
journey (1.0.3) lib/journey/router.rb:68:in `call' 
journey (1.0.3) lib/journey/router.rb:56:in `each' 
journey (1.0.3) lib/journey/router.rb:56:in `call' 
actionpack (3.2.1) lib/action_dispatch/routing/route_set.rb:589:in `call' 
rack-mobile-detect (0.3.0) lib/rack/mobile-detect.rb:164:in `call' 
warden (1.1.1) lib/warden/manager.rb:35:in `call' 
warden (1.1.1) lib/warden/manager.rb:34:in `catch' 
warden (1.1.1) lib/warden/manager.rb:34:in `call' 
actionpack (3.2.1) lib/action_dispatch/middleware/best_standards_support.rb:17:in `call' 
rack (1.4.1) lib/rack/etag.rb:23:in `call' 
rack (1.4.1) lib/rack/conditionalget.rb:35:in `call' 
actionpack (3.2.1) lib/action_dispatch/middleware/head.rb:14:in `call' 
actionpack (3.2.1) lib/action_dispatch/middleware/params_parser.rb:21:in `call' 
actionpack (3.2.1) lib/action_dispatch/middleware/flash.rb:242:in `call' 
rack (1.4.1) lib/rack/session/abstract/id.rb:205:in `context' 
rack (1.4.1) lib/rack/session/abstract/id.rb:200:in `call' 
actionpack (3.2.1) lib/action_dispatch/middleware/cookies.rb:338:in `call' 
activerecord (3.2.1) lib/active_record/query_cache.rb:64:in `call' 
activerecord (3.2.1) lib/active_record/connection_adapters/abstract/connection_pool.rb:443:in `call' 
actionpack (3.2.1) lib/action_dispatch/middleware/callbacks.rb:28:in `call' 
activesupport (3.2.1) lib/active_support/callbacks.rb:405:in `_run__1545501525__call__4__callbacks' 
activesupport (3.2.1) lib/active_support/callbacks.rb:405:in `send' 
activesupport (3.2.1) lib/active_support/callbacks.rb:405:in `__run_callback' 
activesupport (3.2.1) lib/active_support/callbacks.rb:385:in `_run_call_callbacks' 
activesupport (3.2.1) lib/active_support/callbacks.rb:81:in `send' 
activesupport (3.2.1) lib/active_support/callbacks.rb:81:in `run_callbacks' 
actionpack (3.2.1) lib/action_dispatch/middleware/callbacks.rb:27:in `call' 
actionpack (3.2.1) lib/action_dispatch/middleware/reloader.rb:65:in `call' 
actionpack (3.2.1) lib/action_dispatch/middleware/remote_ip.rb:31:in `call' 
actionpack (3.2.1) lib/action_dispatch/middleware/debug_exceptions.rb:16:in `call' 
actionpack (3.2.1) lib/action_dispatch/middleware/show_exceptions.rb:56:in `call' 
railties (3.2.1) lib/rails/rack/logger.rb:26:in `call_app' 
railties (3.2.1) lib/rails/rack/logger.rb:16:in `call' 
actionpack (3.2.1) lib/action_dispatch/middleware/request_id.rb:22:in `call' 
rack (1.4.1) lib/rack/methodoverride.rb:21:in `call' 
rack (1.4.1) lib/rack/runtime.rb:17:in `call' 
activesupport (3.2.1) lib/active_support/cache/strategy/local_cache.rb:72:in `call' 
rack (1.4.1) lib/rack/lock.rb:15:in `call' 
actionpack (3.2.1) lib/action_dispatch/middleware/static.rb:53:in `call' 
railties (3.2.1) lib/rails/engine.rb:479:in `call' 
railties (3.2.1) lib/rails/application.rb:220:in `call' 
rack (1.4.1) lib/rack/content_length.rb:14:in `call' 
railties (3.2.1) lib/rails/rack/log_tailer.rb:14:in `call' 
rack (1.4.1) lib/rack/handler/webrick.rb:59:in `service' 

Answer 1

我覺得這是有欄杆3.2.1問題：github.com/mbleigh/acts-as-taggable-on/issues/249

這是很容易寫您自己的標記功能使用has_and_belongs_to_many關聯和模型中的幾種方法：

has_and_belongs_to_many :tags 
attr_accessor :tag_list 

def tag_list=value 
    value.split(',').each do |tag| 
    self.tags.build(:name => tag).save 
    end 
end 

def tag_list 
    self.tags.join(',') 
end