它在我的本地计算机上工作正常，但在Heroku上的rails_admin中出现以下错误。
以下是我使用enumerize的方式
enumerize：date_type，in：{last_date：0，begin_date：1}， default :: last_date，predicates：{prefix：true，only :: last_date}， i18n_scope：'date_type'
它出现以下错误，我已经从我的rollbar粘贴了错误。刷新页面几次以某种方式工作，它显示模型页面就好了。但大部分时间都会出错。此外，使用数组而不是哈希来定义date_type，即in: [:last_date, :begin_date]＆amp;在rails_admin的列表视图中没有date_type似乎解决了这个问题，否则我收到以下错误。
NoMethodError: undefined method `empty?' for 0:Fixnum
- 141 non-project frames
1
File "/app/vendor/bundle/ruby/2.3.0/gems/enumerize-2.0.1/lib/enumerize/base.rb" line 98 in block in _set_default_value_for_enumerized_attributes
2
File "/app/vendor/bundle/ruby/2.3.0/gems/enumerize-2.0.1/lib/enumerize/attribute_map.rb" line 23 in block in each
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File "/app/vendor/bundle/ruby/2.3.0/gems/enumerize-2.0.1/lib/enumerize/attribute_map.rb" line 22 in each_pair
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File "/app/vendor/bundle/ruby/2.3.0/gems/enumerize-2.0.1/lib/enumerize/attribute_map.rb" line 22 in each
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File "/app/vendor/bundle/ruby/2.3.0/gems/enumerize-2.0.1/lib/enumerize/base.rb" line 87 in _set_default_value_for_enumerized_attributes
6
File "/app/vendor/bundle/ruby/2.3.0/gems/enumerize-2.0.1/lib/enumerize/base.rb" line 52 in initialize
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File "/app/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.8/lib/active_record/inheritance.rb" line 61 in new
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File "/app/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.8/lib/active_record/inheritance.rb" line 61 in new
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File "/app/vendor/bundle/ruby/2.3.0/gems/rails_admin-1.1.1/lib/rails_admin/config/model.rb" line 60 in block (2 levels) in <class:Model>
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File "/app/vendor/bundle/ruby/2.3.0/gems/rails_admin-1.1.1/lib/rails_admin/config/model.rb" line 60 in each
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File "/app/vendor/bundle/ruby/2.3.0/gems/rails_admin-1.1.1/lib/rails_admin/config/model.rb" line 60 in detect
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File "/app/vendor/bundle/ruby/2.3.0/gems/rails_admin-1.1.1/lib/rails_admin/config/model.rb" line 60 in block in <class:Model>
13
File "/app/vendor/bundle/ruby/2.3.0/gems/rails_admin-1.1.1/lib/rails_admin/config/configurable.rb" line 66 in instance_eval
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File "/app/vendor/bundle/ruby/2.3.0/gems/rails_admin-1.1.1/lib/rails_admin/config/configurable.rb" line 66 in block in register_instance_option
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File "/app/vendor/bundle/ruby/2.3.0/gems/rails_admin-1.1.1/lib/rails_admin/config/lazy_model.rb" line 60 in method_missing
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File "/app/vendor/bundle/ruby/2.3.0/gems/rails_admin-1.1.1/app/helpers/rails_admin/application_helper.rb" line 69 in wording_for
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File "/app/vendor/bundle/ruby/2.3.0/gems/rails_admin-1.1.1/app/controllers/rails_admin/main_controller.rb" line 20 in index
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/action_controller/metal/implicit_render.rb" line 4 in send_action
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/abstract_controller/base.rb" line 198 in process_action
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/action_controller/metal/rendering.rb" line 10 in process_action
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/abstract_controller/callbacks.rb" line 20 in block in process_action
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File "/app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.8/lib/active_support/callbacks.rb" line 117 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.8/lib/active_support/callbacks.rb" line 555 in block (2 levels) in compile
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File "/app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.8/lib/active_support/callbacks.rb" line 505 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.8/lib/active_support/callbacks.rb" line 92 in __run_callbacks__
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File "/app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.8/lib/active_support/callbacks.rb" line 778 in _run_process_action_callbacks
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File "/app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.8/lib/active_support/callbacks.rb" line 81 in run_callbacks
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/abstract_controller/callbacks.rb" line 19 in process_action
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/action_controller/metal/rescue.rb" line 29 in process_action
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/action_controller/metal/instrumentation.rb" line 32 in block in process_action
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File "/app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.8/lib/active_support/notifications.rb" line 164 in block in instrument
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File "/app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.8/lib/active_support/notifications/instrumenter.rb" line 20 in instrument
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File "/app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.8/lib/active_support/notifications.rb" line 164 in instrument
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/action_controller/metal/instrumentation.rb" line 30 in process_action
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/action_controller/metal/params_wrapper.rb" line 250 in process_action
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File "/app/vendor/bundle/ruby/2.3.0/gems/searchkick-2.2.0/lib/searchkick/logging.rb" line 209 in process_action
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File "/app/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.8/lib/active_record/railties/controller_runtime.rb" line 18 in process_action
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/abstract_controller/base.rb" line 137 in process
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionview-4.2.8/lib/action_view/rendering.rb" line 30 in process
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/action_controller/metal.rb" line 196 in dispatch
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/action_controller/metal/rack_delegation.rb" line 13 in dispatch
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/action_controller/metal.rb" line 237 in block in action
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/action_dispatch/routing/route_set.rb" line 74 in dispatch
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/action_dispatch/routing/route_set.rb" line 43 in serve
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/action_dispatch/journey/router.rb" line 43 in block in serve
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/action_dispatch/journey/router.rb" line 30 in each
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/action_dispatch/journey/router.rb" line 30 in serve
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/action_dispatch/routing/route_set.rb" line 817 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/railties-4.2.8/lib/rails/engine.rb" line 518 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/railties-4.2.8/lib/rails/railtie.rb" line 194 in public_send
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File "/app/vendor/bundle/ruby/2.3.0/gems/railties-4.2.8/lib/rails/railtie.rb" line 194 in method_missing
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/action_dispatch/routing/mapper.rb" line 51 in serve
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/action_dispatch/journey/router.rb" line 43 in block in serve
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/action_dispatch/journey/router.rb" line 30 in each
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/action_dispatch/journey/router.rb" line 30 in serve
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/action_dispatch/routing/route_set.rb" line 817 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/agent/instrumentation/middleware_tracing.rb" line 92 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/omniauth-1.6.1/lib/omniauth/strategy.rb" line 189 in call!
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File "/app/vendor/bundle/ruby/2.3.0/gems/omniauth-1.6.1/lib/omniauth/strategy.rb" line 167 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/agent/instrumentation/middleware_tracing.rb" line 92 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/rack-pjax-1.0.0/lib/rack/pjax.rb" line 12 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/agent/instrumentation/middleware_tracing.rb" line 92 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/action_dispatch/middleware/flash.rb" line 260 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/agent/instrumentation/middleware_tracing.rb" line 92 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/rack/agent_hooks.rb" line 30 in traced_call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/agent/instrumentation/middleware_tracing.rb" line 92 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/rack/browser_monitoring.rb" line 32 in traced_call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/agent/instrumentation/middleware_tracing.rb" line 92 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/warden-1.2.7/lib/warden/manager.rb" line 36 in block in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/warden-1.2.7/lib/warden/manager.rb" line 35 in catch
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File "/app/vendor/bundle/ruby/2.3.0/gems/warden-1.2.7/lib/warden/manager.rb" line 35 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/agent/instrumentation/middleware_tracing.rb" line 92 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/rack-1.6.5/lib/rack/etag.rb" line 24 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/agent/instrumentation/middleware_tracing.rb" line 92 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/rack-1.6.5/lib/rack/conditionalget.rb" line 25 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/agent/instrumentation/middleware_tracing.rb" line 92 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/rack-1.6.5/lib/rack/head.rb" line 13 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/agent/instrumentation/middleware_tracing.rb" line 92 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/remotipart-1.3.1/lib/remotipart/middleware.rb" line 32 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/agent/instrumentation/middleware_tracing.rb" line 92 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/action_dispatch/middleware/params_parser.rb" line 27 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/agent/instrumentation/middleware_tracing.rb" line 92 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/action_dispatch/middleware/flash.rb" line 260 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/agent/instrumentation/middleware_tracing.rb" line 92 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/rack-1.6.5/lib/rack/session/abstract/id.rb" line 225 in context
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File "/app/vendor/bundle/ruby/2.3.0/gems/rack-1.6.5/lib/rack/session/abstract/id.rb" line 220 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/agent/instrumentation/middleware_tracing.rb" line 92 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/action_dispatch/middleware/cookies.rb" line 560 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/agent/instrumentation/middleware_tracing.rb" line 92 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.8/lib/active_record/query_cache.rb" line 36 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/agent/instrumentation/middleware_tracing.rb" line 92 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/activerecord-4.2.8/lib/active_record/connection_adapters/abstract/connection_pool.rb" line 653 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/agent/instrumentation/middleware_tracing.rb" line 92 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/action_dispatch/middleware/callbacks.rb" line 29 in block in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.8/lib/active_support/callbacks.rb" line 88 in __run_callbacks__
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File "/app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.8/lib/active_support/callbacks.rb" line 778 in _run_call_callbacks
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File "/app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.8/lib/active_support/callbacks.rb" line 81 in run_callbacks
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/action_dispatch/middleware/callbacks.rb" line 27 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/agent/instrumentation/middleware_tracing.rb" line 92 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/action_dispatch/middleware/remote_ip.rb" line 78 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/agent/instrumentation/middleware_tracing.rb" line 92 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/rollbar-2.14.1/lib/rollbar/middleware/rails/rollbar.rb" line 24 in block in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/rollbar-2.14.1/lib/rollbar.rb" line 145 in scoped
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File "/app/vendor/bundle/ruby/2.3.0/gems/rollbar-2.14.1/lib/rollbar/middleware/rails/rollbar.rb" line 22 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/agent/instrumentation/middleware_tracing.rb" line 92 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/action_dispatch/middleware/debug_exceptions.rb" line 17 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/rollbar-2.14.1/lib/rollbar/middleware/rails/show_exceptions.rb" line 22 in call_with_rollbar
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/agent/instrumentation/middleware_tracing.rb" line 92 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/action_dispatch/middleware/show_exceptions.rb" line 30 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/agent/instrumentation/middleware_tracing.rb" line 92 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/railties-4.2.8/lib/rails/rack/logger.rb" line 38 in call_app
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File "/app/vendor/bundle/ruby/2.3.0/gems/railties-4.2.8/lib/rails/rack/logger.rb" line 20 in block in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.8/lib/active_support/tagged_logging.rb" line 68 in block in tagged
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File "/app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.8/lib/active_support/tagged_logging.rb" line 26 in tagged
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File "/app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.8/lib/active_support/tagged_logging.rb" line 68 in tagged
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File "/app/vendor/bundle/ruby/2.3.0/gems/railties-4.2.8/lib/rails/rack/logger.rb" line 20 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/agent/instrumentation/middleware_tracing.rb" line 92 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/action_dispatch/middleware/request_id.rb" line 21 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/agent/instrumentation/middleware_tracing.rb" line 92 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/rack-1.6.5/lib/rack/methodoverride.rb" line 22 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/agent/instrumentation/middleware_tracing.rb" line 92 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/rack-1.6.5/lib/rack/runtime.rb" line 18 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/agent/instrumentation/middleware_tracing.rb" line 92 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/activesupport-4.2.8/lib/active_support/cache/strategy/local_cache_middleware.rb" line 28 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/agent/instrumentation/middleware_tracing.rb" line 92 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/action_dispatch/middleware/static.rb" line 120 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/agent/instrumentation/middleware_tracing.rb" line 92 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/rack-1.6.5/lib/rack/sendfile.rb" line 113 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/agent/instrumentation/middleware_tracing.rb" line 92 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/actionpack-4.2.8/lib/action_dispatch/middleware/ssl.rb" line 24 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/agent/instrumentation/middleware_tracing.rb" line 92 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/rack-cors-0.4.1/lib/rack/cors.rb" line 81 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/agent/instrumentation/middleware_tracing.rb" line 92 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/railties-4.2.8/lib/rails/engine.rb" line 518 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/railties-4.2.8/lib/rails/application.rb" line 165 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/newrelic_rpm-4.0.0.332/lib/new_relic/agent/instrumentation/middleware_tracing.rb" line 92 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/puma-3.8.2/lib/puma/configuration.rb" line 224 in call
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File "/app/vendor/bundle/ruby/2.3.0/gems/puma-3.8.2/lib/puma/server.rb" line 600 in handle_request
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File "/app/vendor/bundle/ruby/2.3.0/gems/puma-3.8.2/lib/puma/server.rb" line 435 in process_client
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File "/app/vendor/bundle/ruby/2.3.0/gems/puma-3.8.2/lib/puma/server.rb" line 299 in block in run
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File "/app/vendor/bundle/ruby/2.3.0/gems/puma-3.8.2/lib/puma/thread_pool.rb" line 120 in block in spawn_thread
不明白出了什么问题？