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僅更新時缺少模板錯誤

[英]Template Missing error on update only

 原文  2014-11-25 16:20:37  9   1    javascript/ ruby-on-rails/ ruby/ activerecord

問題描述

Ruby，Rails和ActiveRecord仍然讓我望而卻步...

目前，我正在將Flash Notices集成到我的應用程序中（第4軌，ruby 2.1）。 我從我的MetaCategory activerecord類開始。 我正在使用ajax來回移動數據。 因此，為實現Flash消息，我對創建，更新和銷毀操作視圖進行了結構化，如下所示：

Create.js.erb / Update.js.erb / Destroy.js.erb： 

<% flash.each do |type, message| %>
    $('#flash_messages').html("<div class='alert <%= bootstrap_class_for(type) %> alert-dismissible' role='alert'><buttonclass='close' data-dismiss='alert'>×</button><%= message.html_safe%></div>")
<% end %>

我的問題是這樣的：在創建和銷毀時，我的Flash消息按原樣顯示。 更新時，不顯示它們。

這是用於在MetaCategories控制器中創建，更新和銷毀活動的代碼。 我應該指出，在update代碼中，我嘗試了幾種不同的策略，它們導致了兩種不同的響應。

如果我放棄了response_to do..render..end，我會收到一個丟失的模板錯誤（下面的跟蹤）。 如果放入，則不會再收到該錯誤。 在兩種情況下，我都看不到Flash消息。 令我進一步困擾的是，更新代碼是唯一似乎需要response_做的代碼。 銷毀和創建似乎並不在乎。 （我是否提到我是Rails世界的新手？）

無論如何，代碼： 

  def create
    # TODO: need uniqueness test for new Metas
    if params[:commit]=='Save'
      if current_user.try(:admin?)
            @meta_category = MetaCategory.create(meta_category_params)
        flash[:notice]='Meta category has been created.'
      else
        MetaCategoryProposedChange.create(new_meta_category: meta_category_params[:name],
                                          proposing_user_id: current_user.id)
        flash[:notice]='Your proposed new meta category has been recorded. You will be notified when it has been reviewed.'
      end
    end
  end

  def update
    # TODO: need uniqueness test for updated Metas
    if current_user.try(:admin?)
      @meta_category.update(meta_category_params)
      flash[:notice]='Meta category has been updated.'
      respond_to do |format|
        format.json { render 'update.js.erb', json: @meta_category }
      end
    else
      MetaCategoryProposedChange.create(meta_category_id: @meta_category.id,
                                        new_meta_category: meta_category_params[:name],
                                        proposing_user_id: current_user.id)
      flash[:notice]='Your proposed change has been recorded. You will be notified when it has been reviewed.'
      respond_to do |format|
        format.json { render 'update.js.erb', json: @meta_category, :status => 400 }
      end
    end

  end

  def destroy
    if current_user.try(:admin?)
      @meta_category.destroy
      flash[:notice]='Meta category has been deleted.'
    end
  end

跟蹤： 

Started PUT "/meta_categories/95" for 127.0.0.1 at 2014-11-25 11:10:56 -0500
Processing by MetaCategoriesController#update as JSON
  Parameters: {"meta_category"=>{"name"=>"#BETABETA"}, "authenticity_token"=>"+Ui6n7tpUPRbGsmFW7RXGbH461Y0UueGSVmi8GlKjqY=", "id"=>"95"}
  User Load (0.3ms)  SELECT `users`.* FROM `users` WHERE `users`.`id` = 1 ORDER BY `users`.`id` ASC LIMIT 1
  MetaCategory Load (0.2ms)  SELECT `meta_categories`.* FROM `meta_categories` WHERE `meta_categories`.`id` = 95 LIMIT 1
   (0.1ms)  BEGIN
  SQL (0.3ms)  UPDATE `meta_categories` SET `name` = '#BETABETA', `updated_at` = '2014-11-25 16:10:56' WHERE `meta_categories`.`id` = 95
   (1.4ms)  COMMIT
Completed 500 Internal Server Error in 9ms

ActionView::MissingTemplate (Missing template meta_categories/update, application/update with {:locale=>[:en], :formats=>[:json], :handlers=>[:erb, :builder, :raw, :ruby, :jbuilder, :coffee]}. Searched in:
  * "/Users/cboebel/Documents/Development/Ruby/VerbQ/app/views"
  * "/Users/cboebel/.rvm/gems/ruby-2.1.0/gems/devise-3.4.0/app/views"
):
  actionpack (4.0.0) lib/action_view/path_set.rb:46:in `find'
  actionpack (4.0.0) lib/action_view/lookup_context.rb:115:in `find'
  actionpack (4.0.0) lib/action_view/renderer/abstract_renderer.rb:18:in `find_template'
  actionpack (4.0.0) lib/action_view/renderer/template_renderer.rb:35:in `determine_template'
  actionpack (4.0.0) lib/action_view/renderer/template_renderer.rb:8:in `render'
  actionpack (4.0.0) lib/action_view/renderer/renderer.rb:42:in `render_template'
  actionpack (4.0.0) lib/action_view/renderer/renderer.rb:23:in `render'
  actionpack (4.0.0) lib/abstract_controller/rendering.rb:127:in `_render_template'
  actionpack (4.0.0) lib/action_controller/metal/streaming.rb:219:in `_render_template'
  actionpack (4.0.0) lib/abstract_controller/rendering.rb:120:in `render_to_body'
  actionpack (4.0.0) lib/action_controller/metal/rendering.rb:33:in `render_to_body'
  actionpack (4.0.0) lib/action_controller/metal/renderers.rb:26:in `render_to_body'
  actionpack (4.0.0) lib/abstract_controller/rendering.rb:97:in `render'
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  actionpack (4.0.0) lib/action_controller/metal/instrumentation.rb:41:in `block (2 levels) in render'
  activesupport (4.0.0) lib/active_support/core_ext/benchmark.rb:12:in `block in ms'
  /Users/cboebel/.rvm/rubies/ruby-2.1.0/lib/ruby/2.1.0/benchmark.rb:294:in `realtime'
  activesupport (4.0.0) lib/active_support/core_ext/benchmark.rb:12:in `ms'
  actionpack (4.0.0) lib/action_controller/metal/instrumentation.rb:41:in `block in render'
  actionpack (4.0.0) lib/action_controller/metal/instrumentation.rb:84:in `cleanup_view_runtime'
  activerecord (4.0.0) lib/active_record/railties/controller_runtime.rb:25:in `cleanup_view_runtime'
  actionpack (4.0.0) lib/action_controller/metal/instrumentation.rb:40:in `render'
  actionpack (4.0.0) lib/action_controller/metal/implicit_render.rb:10:in `default_render'
  actionpack (4.0.0) lib/action_controller/metal/implicit_render.rb:5: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:433:in `_run__4261403948446499921__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'
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  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'
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  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'
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  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'
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  actionpack (4.0.0) lib/action_dispatch/routing/route_set.rb:655:in `call'
  newrelic_rpm (3.9.6.257) lib/new_relic/agent/instrumentation/middleware_tracing.rb:57:in `call'
  newrelic_rpm (3.9.6.257) lib/new_relic/rack/agent_hooks.rb:26:in `traced_call'
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  newrelic_rpm (3.9.6.257) lib/new_relic/rack/browser_monitoring.rb:23:in `traced_call'
  newrelic_rpm (3.9.6.257) lib/new_relic/agent/instrumentation/middleware_tracing.rb:55:in `call'
  newrelic_rpm (3.9.6.257) lib/new_relic/rack/developer_mode.rb:48:in `traced_call'
  newrelic_rpm (3.9.6.257) lib/new_relic/agent/instrumentation/middleware_tracing.rb:55:in `call'
  warden (1.2.3) lib/warden/manager.rb:35:in `block in call'
  warden (1.2.3) lib/warden/manager.rb:34:in `catch'
  warden (1.2.3) lib/warden/manager.rb:34:in `call'
  newrelic_rpm (3.9.6.257) lib/new_relic/agent/instrumentation/middleware_tracing.rb:57:in `call'
  rack (1.5.2) lib/rack/etag.rb:23:in `call'
  newrelic_rpm (3.9.6.257) lib/new_relic/agent/instrumentation/middleware_tracing.rb:57:in `call'
  rack (1.5.2) lib/rack/conditionalget.rb:35:in `call'
  newrelic_rpm (3.9.6.257) lib/new_relic/agent/instrumentation/middleware_tracing.rb:57:in `call'
  rack (1.5.2) lib/rack/head.rb:11:in `call'
  newrelic_rpm (3.9.6.257) lib/new_relic/agent/instrumentation/middleware_tracing.rb:57:in `call'
  actionpack (4.0.0) lib/action_dispatch/middleware/params_parser.rb:27:in `call'
  newrelic_rpm (3.9.6.257) lib/new_relic/agent/instrumentation/middleware_tracing.rb:57:in `call'
  actionpack (4.0.0) lib/action_dispatch/middleware/flash.rb:241:in `call'
  newrelic_rpm (3.9.6.257) lib/new_relic/agent/instrumentation/middleware_tracing.rb:57: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'
  newrelic_rpm (3.9.6.257) lib/new_relic/agent/instrumentation/middleware_tracing.rb:57:in `call'
  actionpack (4.0.0) lib/action_dispatch/middleware/cookies.rb:486:in `call'
  newrelic_rpm (3.9.6.257) lib/new_relic/agent/instrumentation/middleware_tracing.rb:57:in `call'
  activerecord (4.0.0) lib/active_record/query_cache.rb:36:in `call'
  newrelic_rpm (3.9.6.257) lib/new_relic/agent/instrumentation/middleware_tracing.rb:57:in `call'
  activerecord (4.0.0) lib/active_record/connection_adapters/abstract/connection_pool.rb:626:in `call'
  newrelic_rpm (3.9.6.257) lib/new_relic/agent/instrumentation/middleware_tracing.rb:57:in `call'
  activerecord (4.0.0) lib/active_record/migration.rb:369:in `call'
  newrelic_rpm (3.9.6.257) lib/new_relic/agent/instrumentation/middleware_tracing.rb:57: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 `_run__1672416812750893188__call__callbacks'
  activesupport (4.0.0) lib/active_support/callbacks.rb:80:in `run_callbacks'
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  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'
  newrelic_rpm (3.9.6.257) lib/new_relic/agent/instrumentation/middleware_tracing.rb:57:in `call'
  actionpack (4.0.0) lib/action_dispatch/middleware/request_id.rb:21:in `call'
  newrelic_rpm (3.9.6.257) lib/new_relic/agent/instrumentation/middleware_tracing.rb:57:in `call'
  rack (1.5.2) lib/rack/methodoverride.rb:21:in `call'
  newrelic_rpm (3.9.6.257) lib/new_relic/agent/instrumentation/middleware_tracing.rb:57:in `call'
  rack (1.5.2) lib/rack/runtime.rb:17:in `call'
  newrelic_rpm (3.9.6.257) lib/new_relic/agent/instrumentation/middleware_tracing.rb:57:in `call'
  activesupport (4.0.0) lib/active_support/cache/strategy/local_cache.rb:83:in `call'
  newrelic_rpm (3.9.6.257) lib/new_relic/agent/instrumentation/middleware_tracing.rb:57:in `call'
  rack (1.5.2) lib/rack/lock.rb:17:in `call'
  newrelic_rpm (3.9.6.257) lib/new_relic/agent/instrumentation/middleware_tracing.rb:57:in `call'
  actionpack (4.0.0) lib/action_dispatch/middleware/static.rb:64:in `call'
  newrelic_rpm (3.9.6.257) lib/new_relic/agent/instrumentation/middleware_tracing.rb:57:in `call'
  railties (4.0.0) lib/rails/engine.rb:511:in `call'
  railties (4.0.0) lib/rails/application.rb:97:in `call'
  newrelic_rpm (3.9.6.257) lib/new_relic/agent/instrumentation/middleware_tracing.rb:57: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'
  /Users/cboebel/.rvm/rubies/ruby-2.1.0/lib/ruby/2.1.0/webrick/httpserver.rb:138:in `service'
  /Users/cboebel/.rvm/rubies/ruby-2.1.0/lib/ruby/2.1.0/webrick/httpserver.rb:94:in `run'
  /Users/cboebel/.rvm/rubies/ruby-2.1.0/lib/ruby/2.1.0/webrick/server.rb:295:in `block in start_thread'


  Rendered /Users/cboebel/.rvm/gems/ruby-2.1.0/gems/actionpack-4.0.0/lib/action_dispatch/middleware/templates/rescues/missing_template.erb within rescues/layout (0.7ms)

所以..不確定如何進行。 我在該站點上看到了各種有關Rails需要告訴如何響應的答案，當我添加response_to時丟失了錯誤時，這一點得到了證實。 不過，令我困擾的是，它似乎沒有在update.js.erb中執行我的代碼。

謝謝！

1 個解決方案

解決方案1
 0  2014-11-25 16:39:07

您的答案在這里： 

def update
    # TODO: need uniqueness test for updated Metas
    if current_user.try(:admin?)
      @meta_category.update(meta_category_params)
      flash[:notice]='Meta category has been updated.'
      respond_to do |format|
          format.json { render json: @meta_category, :status => 400 }
          format.js 
      end
    else
      MetaCategoryProposedChange.create(meta_category_id: @meta_category.id,
                                        new_meta_category: meta_category_params[:name],
                                        proposing_user_id: current_user.id)
      flash[:notice]='Your proposed change has been recorded. You will be notified when it has been reviewed.'
      respond_to do |format|
        format.json { render json: @meta_category, :status => 400 }
        format.js 
      end
    end

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