非工作呈現

Question

我在標題中收到錯誤消息，我無法理解爲什麼？

這是我的代碼 user.rb

has_one :GoldBook 
has_many :comments 

gold_book.rb

has_many :comments 
belongs_to :user 

comment.rb

belongs_to :user 
belongs_to :gold_book 

comments_controller.rb

def create 
@gold_book = GoldBook.find(params[:gold_book_id]) 
@comment = Comment.new(params[:comment]) 
@comment.goldbook = @gold_book 
@comment.user = current_user 

gold_books/show.html.erb

<%= render 'goldbook' %> 

gold_books/_goldbooks

<%= render 'comments/form', goldbook: goldbook %> 

的意見/ _form

<%= form_for([goldbook, @comment]) do |f| %> 
    <% if @comment.errors.any? %> 
    <div id="error_explanation"> 
     <h2><%= pluralize(@comment.errors.count, "error") %> prohibited this comment from being saved:</h2> 

     <ul> 
     <% @comment.errors.full_messages.each do |msg| %> 
     <li><%= msg %></li> 
     <% end %> 
     </ul> 
    </div> 
    <% end %> 

    <div class="field"> 
    <%= f.label :content %><br /> 
    <%= f.text_area :content %> 
    </div> 
    <div class="actions"> 
    <%= f.submit %> 
    </div> 
<% end %> 

我認爲錯誤是在評論的形式，但不知道... 我試圖讓許多想法像黃金書一樣思考

這是完整的跟蹤誤差：

activemodel (3.2.8) lib/active_model/naming.rb:163:in `model_name_from_record_or_class' 
activemodel (3.2.8) lib/active_model/naming.rb:158:in `param_key' 
actionpack (3.2.8) lib/action_view/helpers/form_helper.rb:369:in `form_for' 
app/views/comments/_form.html.erb:1:in `_app_views_comments__form_html_erb__1022796803_80617610' 
actionpack (3.2.8) lib/action_view/template.rb:145:in `block in render' 
activesupport (3.2.8) lib/active_support/notifications.rb:125:in `instrument' 
actionpack (3.2.8) lib/action_view/template.rb:143:in `render' 
actionpack (3.2.8) lib/action_view/renderer/partial_renderer.rb:265:in `render_partial' 
actionpack (3.2.8) lib/action_view/renderer/partial_renderer.rb:238:in `block in render' 
actionpack (3.2.8) lib/action_view/renderer/abstract_renderer.rb:38:in `block in instrument' 
activesupport (3.2.8) lib/active_support/notifications.rb:123:in `block in instrument' 
activesupport (3.2.8) lib/active_support/notifications/instrumenter.rb:20:in `instrument' 
activesupport (3.2.8) lib/active_support/notifications.rb:123:in `instrument' 
actionpack (3.2.8) lib/action_view/renderer/abstract_renderer.rb:38:in `instrument' 
actionpack (3.2.8) lib/action_view/renderer/partial_renderer.rb:237:in `render' 
actionpack (3.2.8) lib/action_view/renderer/renderer.rb:41:in `render_partial' 
actionpack (3.2.8) lib/action_view/helpers/rendering_helper.rb:27:in `render' 
app/views/gold_books/_goldbook.html.erb:3:in `_app_views_gold_books__goldbook_html_erb__357761412_79186410' 
actionpack (3.2.8) lib/action_view/template.rb:145:in `block in render' 
activesupport (3.2.8) lib/active_support/notifications.rb:125:in `instrument' 
actionpack (3.2.8) lib/action_view/template.rb:143:in `render' 
actionpack (3.2.8) lib/action_view/renderer/partial_renderer.rb:265:in `render_partial' 
actionpack (3.2.8) lib/action_view/renderer/partial_renderer.rb:238:in `block in render' 
actionpack (3.2.8) lib/action_view/renderer/abstract_renderer.rb:38:in `block in instrument' 
activesupport (3.2.8) lib/active_support/notifications.rb:123:in `block in instrument' 
activesupport (3.2.8) lib/active_support/notifications/instrumenter.rb:20:in `instrument' 
activesupport (3.2.8) lib/active_support/notifications.rb:123:in `instrument' 
actionpack (3.2.8) lib/action_view/renderer/abstract_renderer.rb:38:in `instrument' 
actionpack (3.2.8) lib/action_view/renderer/partial_renderer.rb:237:in `render' 
actionpack (3.2.8) lib/action_view/renderer/renderer.rb:41:in `render_partial' 
actionpack (3.2.8) lib/action_view/helpers/rendering_helper.rb:27:in `render' 
app/views/gold_books/show.html.erb:7:in `_app_views_gold_books_show_html_erb__197041322_85056980' 
actionpack (3.2.8) lib/action_view/template.rb:145:in `block in render' 
activesupport (3.2.8) lib/active_support/notifications.rb:125:in `instrument' 
actionpack (3.2.8) lib/action_view/template.rb:143:in `render' 
actionpack (3.2.8) lib/action_view/renderer/template_renderer.rb:47:in `block (2 levels) in render_template' 
actionpack (3.2.8) lib/action_view/renderer/abstract_renderer.rb:38:in `block in instrument' 
activesupport (3.2.8) lib/active_support/notifications.rb:123:in `block in instrument' 
activesupport (3.2.8) lib/active_support/notifications/instrumenter.rb:20:in `instrument' 
activesupport (3.2.8) lib/active_support/notifications.rb:123:in `instrument' 
actionpack (3.2.8) lib/action_view/renderer/abstract_renderer.rb:38:in `instrument' 
actionpack (3.2.8) lib/action_view/renderer/template_renderer.rb:46:in `block in render_template' 
actionpack (3.2.8) lib/action_view/renderer/template_renderer.rb:54:in `render_with_layout' 
actionpack (3.2.8) lib/action_view/renderer/template_renderer.rb:45:in `render_template' 
actionpack (3.2.8) lib/action_view/renderer/template_renderer.rb:18:in `render' 
actionpack (3.2.8) lib/action_view/renderer/renderer.rb:36:in `render_template' 
actionpack (3.2.8) lib/action_view/renderer/renderer.rb:17:in `render' 
actionpack (3.2.8) lib/abstract_controller/rendering.rb:110:in `_render_template' 
actionpack (3.2.8) lib/action_controller/metal/streaming.rb:225:in `_render_template' 
actionpack (3.2.8) lib/abstract_controller/rendering.rb:103:in `render_to_body' 
actionpack (3.2.8) lib/action_controller/metal/renderers.rb:28:in `render_to_body' 
actionpack (3.2.8) lib/action_controller/metal/compatibility.rb:50:in `render_to_body' 
actionpack (3.2.8) lib/abstract_controller/rendering.rb:88:in `render' 
actionpack (3.2.8) lib/action_controller/metal/rendering.rb:16:in `render' 
actionpack (3.2.8) lib/action_controller/metal/instrumentation.rb:40:in `block (2 levels) in render' 
activesupport (3.2.8) lib/active_support/core_ext/benchmark.rb:5:in `block in ms' 
/usr/lib/ruby/1.9.1/benchmark.rb:295:in `realtime' 
activesupport (3.2.8) lib/active_support/core_ext/benchmark.rb:5:in `ms' 
actionpack (3.2.8) lib/action_controller/metal/instrumentation.rb:40:in `block in render' 
actionpack (3.2.8) lib/action_controller/metal/instrumentation.rb:83:in `cleanup_view_runtime' 
activerecord (3.2.8) lib/active_record/railties/controller_runtime.rb:24:in `cleanup_view_runtime' 
actionpack (3.2.8) lib/action_controller/metal/instrumentation.rb:39:in `render' 
actionpack (3.2.8) lib/action_controller/metal/implicit_render.rb:10:in `default_render' 
actionpack (3.2.8) lib/action_controller/metal/mime_responds.rb:196:in `respond_to' 
app/controllers/gold_books_controller.rb:18:in `show' 
actionpack (3.2.8) lib/action_controller/metal/implicit_render.rb:4:in `send_action' 
actionpack (3.2.8) lib/abstract_controller/base.rb:167:in `process_action' 
actionpack (3.2.8) lib/action_controller/metal/rendering.rb:10:in `process_action' 
actionpack (3.2.8) lib/abstract_controller/callbacks.rb:18:in `block in process_action' 
activesupport (3.2.8) lib/active_support/callbacks.rb:414:in `_run__799128830__process_action__547441087__callbacks' 
activesupport (3.2.8) lib/active_support/callbacks.rb:405:in `__run_callback' 
activesupport (3.2.8) lib/active_support/callbacks.rb:385:in `_run_process_action_callbacks' 
activesupport (3.2.8) lib/active_support/callbacks.rb:81:in `run_callbacks' 
actionpack (3.2.8) lib/abstract_controller/callbacks.rb:17:in `process_action' 
actionpack (3.2.8) lib/action_controller/metal/rescue.rb:29:in `process_action' 
actionpack (3.2.8) lib/action_controller/metal/instrumentation.rb:30:in `block in process_action' 
activesupport (3.2.8) lib/active_support/notifications.rb:123:in `block in instrument' 
activesupport (3.2.8) lib/active_support/notifications/instrumenter.rb:20:in `instrument' 
activesupport (3.2.8) lib/active_support/notifications.rb:123:in `instrument' 
actionpack (3.2.8) lib/action_controller/metal/instrumentation.rb:29:in `process_action' 
actionpack (3.2.8) lib/action_controller/metal/params_wrapper.rb:207:in `process_action' 
activerecord (3.2.8) lib/active_record/railties/controller_runtime.rb:18:in `process_action' 
actionpack (3.2.8) lib/abstract_controller/base.rb:121:in `process' 
actionpack (3.2.8) lib/abstract_controller/rendering.rb:45:in `process' 
actionpack (3.2.8) lib/action_controller/metal.rb:203:in `dispatch' 
actionpack (3.2.8) lib/action_controller/metal/rack_delegation.rb:14:in `dispatch' 
actionpack (3.2.8) lib/action_controller/metal.rb:246:in `block in action' 
actionpack (3.2.8) lib/action_dispatch/routing/route_set.rb:73:in `call' 
actionpack (3.2.8) lib/action_dispatch/routing/route_set.rb:73:in `dispatch' 
actionpack (3.2.8) lib/action_dispatch/routing/route_set.rb:36:in `call' 
journey (1.0.4) lib/journey/router.rb:68:in `block in call' 
journey (1.0.4) lib/journey/router.rb:56:in `each' 
journey (1.0.4) lib/journey/router.rb:56:in `call' 
actionpack (3.2.8) lib/action_dispatch/routing/route_set.rb:600:in `call' 
actionpack (3.2.8) 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:25:in `call' 
actionpack (3.2.8) lib/action_dispatch/middleware/head.rb:14:in `call' 
actionpack (3.2.8) lib/action_dispatch/middleware/params_parser.rb:21:in `call' 
actionpack (3.2.8) 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 (3.2.8) lib/action_dispatch/middleware/cookies.rb:339:in `call' 
activerecord (3.2.8) lib/active_record/query_cache.rb:64:in `call' 
activerecord (3.2.8) lib/active_record/connection_adapters/abstract/connection_pool.rb:473:in `call' 
actionpack (3.2.8) lib/action_dispatch/middleware/callbacks.rb:28:in `block in call' 
activesupport (3.2.8) lib/active_support/callbacks.rb:405:in `_run__1022103052__call__645886376__callbacks' 
activesupport (3.2.8) lib/active_support/callbacks.rb:405:in `__run_callback' 
activesupport (3.2.8) lib/active_support/callbacks.rb:385:in `_run_call_callbacks' 
activesupport (3.2.8) lib/active_support/callbacks.rb:81:in `run_callbacks' 
actionpack (3.2.8) lib/action_dispatch/middleware/callbacks.rb:27:in `call' 
actionpack (3.2.8) lib/action_dispatch/middleware/reloader.rb:65:in `call' 
actionpack (3.2.8) lib/action_dispatch/middleware/remote_ip.rb:31:in `call' 
actionpack (3.2.8) lib/action_dispatch/middleware/debug_exceptions.rb:16:in `call' 
actionpack (3.2.8) lib/action_dispatch/middleware/show_exceptions.rb:56:in `call' 
railties (3.2.8) lib/rails/rack/logger.rb:26:in `call_app' 
railties (3.2.8) lib/rails/rack/logger.rb:16:in `call' 
actionpack (3.2.8) 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 (3.2.8) lib/active_support/cache/strategy/local_cache.rb:72:in `call' 
rack (1.4.1) lib/rack/lock.rb:15:in `call' 
actionpack (3.2.8) lib/action_dispatch/middleware/static.rb:62:in `call' 
railties (3.2.8) lib/rails/engine.rb:479:in `call' 
railties (3.2.8) lib/rails/application.rb:223:in `call' 
rack (1.4.1) lib/rack/content_length.rb:14:in `call' 
railties (3.2.8) lib/rails/rack/log_tailer.rb:17:in `call' 
rack (1.4.1) lib/rack/handler/webrick.rb:59:in `service' 
/usr/lib/ruby/1.9.1/webrick/httpserver.rb:138:in `service' 
/usr/lib/ruby/1.9.1/webrick/httpserver.rb:94:in `run' 
/usr/lib/ruby/1.9.1/webrick/server.rb:191:in `block in start_thread' 

Answer 1

協會是區分大小寫的。更改此：

has_one :GoldBook 

到

has_one :gold_book 

而且，您的實例變量稱爲@gold_book，但在你的show視圖你指的是goldbook。嘗試將其更改爲：

<%= render 'comments/form', gold_book: @gold_book %> 

通常，請確保您遵守Rails的命名約定。看看this guide，特別是關於「默認渲染」的部分。