未定義的方法'link_to_add \ remove'爲＃<SimpleForm :: FormBuilder>

我一直在做一些研究，我似乎無法找到我做錯了什麼。未定義的方法'link_to_add remove'爲＃<SimpleForm :: FormBuilder>

我已經安裝了simple_form和nested_form gems，但是當我使用link_to_add或remove時，我得到了同樣的錯誤。

繼承人的代碼

/fields.html.erb

<%= render 'shared/error_messages', :object => f.object %> 
    <%= f.input :nombre_cliente, :label => 'Nombre del cliente:', :as => :string %> 
    <%= f.input :mail_cliente, :label => 'E-mail del cliente:', :as => :string %> 
    <%= f.input :empresa_cliente, :label => 'Empresa:', :as => :string %> 
    <%= f.input :confirmada, :label => 'Ha sido confirmada por el cliente.' %> 
    <%= f.input :confirmacion_cliente, :label => 'Fecha de confirmacion por el cliente:', :as => :date %> 
    <b>something here</b> 
    </br></br> 
    <%= f.simple_fields_for :producto_de_cotizacion do |productos| %> 
    <%= productos.input :nombre %> 
    <%= productos.input :descripcion %> 
    <%= productos.input :precio%> 
    <%= productos.link_to_remove("Eliminar producto") %> 
    <% end %> 
    <%= f.link_to_add "Agregar producto", :producto_de_cotizacion %>

有些是在西班牙，但我認爲它理解

下面是實際的錯誤即時得到：

undefined method `link_to_remove' for < SimpleForm::FormBuilder:0x9ccf37c>

這是_fields.html.erb的整體，但它被new.html.erb和edit.html.erb文件，這是基本一致，生病後編輯文件：

<h1>Agregar Cotizacion</h1> 
<div id='admin_view'> 
    <%= simple_form_for @cotizacion, :html => {:multipart => true} do |f| %> 
    <%= render "fields", :f => f %> 
    <%= f.button :submit, 'Actualizar Cotizacion' %> 
     <% end%> 
</div>

改變它之後simple_nested_form我得到一個新的錯誤：

undefined method `klass' for nil:NilClass

和繼承人的堆棧

activesupport (3.0.7) lib/active_support/whiny_nil.rb:48:in `method_missing' 
/home/peanut/.rvm/gems/ruby-1.9.2-p180/bundler/gems/nested_form-57f32788f195/lib/nested_form/builder_mixin.rb:23:in `block in link_to_add' 
/home/peanut/.rvm/gems/ruby-1.9.2-p180/bundler/gems/nested_form-57f32788f195/lib/nested_form/view_helper.rb:37:in `call' 
/home/peanut/.rvm/gems/ruby-1.9.2-p180/bundler/gems/nested_form-57f32788f195/lib/nested_form/view_helper.rb:37:in `block in after_nested_form_callbacks' 
/home/peanut/.rvm/gems/ruby-1.9.2-p180/bundler/gems/nested_form-57f32788f195/lib/nested_form/view_helper.rb:36:in `map' 
/home/peanut/.rvm/gems/ruby-1.9.2-p180/bundler/gems/nested_form-57f32788f195/lib/nested_form/view_helper.rb:36:in `after_nested_form_callbacks' 
/home/peanut/.rvm/gems/ruby-1.9.2-p180/bundler/gems/nested_form-57f32788f195/lib/nested_form/view_helper.rb:13:in `simple_nested_form_for' 
app/views/cotizacions/edit.html.erb:3:in `_app_views_cotizacions_edit_html_erb__855809706_86735240_354753338' 
actionpack (3.0.7) lib/action_view/template.rb:135:in `block in render' 
activesupport (3.0.7) lib/active_support/notifications.rb:54:in `instrument' 
actionpack (3.0.7) lib/action_view/template.rb:127:in `render' 
actionpack (3.0.7) lib/action_view/render/rendering.rb:59:in `block in _render_template' 
activesupport (3.0.7) lib/active_support/notifications.rb:52:in `block in instrument' 
activesupport (3.0.7) lib/active_support/notifications/instrumenter.rb:21:in `instrument' 
activesupport (3.0.7) lib/active_support/notifications.rb:52:in `instrument' 
actionpack (3.0.7) lib/action_view/render/rendering.rb:56:in `_render_template' 
actionpack (3.0.7) lib/action_view/render/rendering.rb:26:in `render' 
actionpack (3.0.7) lib/abstract_controller/rendering.rb:115:in `_render_template' 
actionpack (3.0.7) lib/abstract_controller/rendering.rb:109:in `render_to_body' 
actionpack (3.0.7) lib/action_controller/metal/renderers.rb:47:in `render_to_body' 
actionpack (3.0.7) lib/action_controller/metal/compatibility.rb:55:in `render_to_body' 
actionpack (3.0.7) lib/abstract_controller/rendering.rb:102:in `render_to_string' 
actionpack (3.0.7) lib/abstract_controller/rendering.rb:93:in `render' 
actionpack (3.0.7) lib/action_controller/metal/rendering.rb:17:in `render' 
actionpack (3.0.7) lib/action_controller/metal/instrumentation.rb:40:in `block (2 levels) in render' 
activesupport (3.0.7) lib/active_support/core_ext/benchmark.rb:5:in `block in ms' 
/home/peanut/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/benchmark.rb:309:in `realtime' 
activesupport (3.0.7) lib/active_support/core_ext/benchmark.rb:5:in `ms' 
actionpack (3.0.7) lib/action_controller/metal/instrumentation.rb:40:in `block in render' 
actionpack (3.0.7) lib/action_controller/metal/instrumentation.rb:78:in `cleanup_view_runtime' 
activerecord (3.0.7) lib/active_record/railties/controller_runtime.rb:15:in `cleanup_view_runtime' 
actionpack (3.0.7) lib/action_controller/metal/instrumentation.rb:39:in `render' 
meta-tags (1.2.4) lib/meta_tags/controller_helper.rb:28:in `render_with_meta_tags' 
actionpack (3.0.7) lib/action_controller/metal/implicit_render.rb:14:in `default_render' 
actionpack (3.0.7) lib/action_controller/metal/implicit_render.rb:6:in `send_action' 
actionpack (3.0.7) lib/abstract_controller/base.rb:150:in `process_action' 
actionpack (3.0.7) lib/action_controller/metal/rendering.rb:11:in `process_action' 
actionpack (3.0.7) lib/abstract_controller/callbacks.rb:18:in `block in process_action' 
activesupport (3.0.7) lib/active_support/callbacks.rb:451:in `_run__761686272__process_action__750077467__callbacks' 
activesupport (3.0.7) lib/active_support/callbacks.rb:410:in `_run_process_action_callbacks' 
activesupport (3.0.7) lib/active_support/callbacks.rb:94:in `run_callbacks' 
actionpack (3.0.7) lib/abstract_controller/callbacks.rb:17:in `process_action' 
actionpack (3.0.7) lib/action_controller/metal/instrumentation.rb:30:in `block in process_action' 
activesupport (3.0.7) lib/active_support/notifications.rb:52:in `block in instrument' 
activesupport (3.0.7) lib/active_support/notifications/instrumenter.rb:21:in `instrument' 
activesupport (3.0.7) lib/active_support/notifications.rb:52:in `instrument' 
actionpack (3.0.7) lib/action_controller/metal/instrumentation.rb:29:in `process_action' 
actionpack (3.0.7) lib/action_controller/metal/rescue.rb:17:in `process_action' 
actionpack (3.0.7) lib/abstract_controller/base.rb:119:in `process' 
actionpack (3.0.7) lib/abstract_controller/rendering.rb:41:in `process' 
actionpack (3.0.7) lib/action_controller/metal.rb:138:in `dispatch' 
actionpack (3.0.7) lib/action_controller/metal/rack_delegation.rb:14:in `dispatch' 
actionpack (3.0.7) lib/action_controller/metal.rb:178:in `block in action' 
actionpack (3.0.7) lib/action_dispatch/routing/route_set.rb:62:in `call' 
actionpack (3.0.7) lib/action_dispatch/routing/route_set.rb:62:in `dispatch' 
actionpack (3.0.7) lib/action_dispatch/routing/route_set.rb:27:in `call' 
rack-mount (0.6.14) lib/rack/mount/route_set.rb:148:in `block in call' 
rack-mount (0.6.14) lib/rack/mount/code_generation.rb:93:in `block in recognize' 
rack-mount (0.6.14) lib/rack/mount/code_generation.rb:89:in `optimized_each' 
rack-mount (0.6.14) lib/rack/mount/code_generation.rb:92:in `recognize' 
rack-mount (0.6.14) lib/rack/mount/route_set.rb:139:in `call' 
actionpack (3.0.7) lib/action_dispatch/routing/route_set.rb:493:in `call' 
warden (0.10.7) lib/warden/manager.rb:35:in `block in call' 
warden (0.10.7) lib/warden/manager.rb:34:in `catch' 
warden (0.10.7) lib/warden/manager.rb:34:in `call' 
actionpack (3.0.7) lib/action_dispatch/middleware/best_standards_support.rb:17:in `call' 
actionpack (3.0.7) lib/action_dispatch/middleware/head.rb:14:in `call' 
rack (1.2.4) lib/rack/methodoverride.rb:24:in `call' 
actionpack (3.0.7) lib/action_dispatch/middleware/params_parser.rb:21:in `call' 
actionpack (3.0.7) lib/action_dispatch/middleware/flash.rb:182:in `call' 
actionpack (3.0.7) lib/action_dispatch/middleware/session/abstract_store.rb:149:in `call' 
actionpack (3.0.7) lib/action_dispatch/middleware/cookies.rb:302:in `call' 
activerecord (3.0.7) lib/active_record/query_cache.rb:32:in `block in call' 
activerecord (3.0.7) lib/active_record/connection_adapters/abstract/query_cache.rb:28:in `cache' 
activerecord (3.0.7) lib/active_record/query_cache.rb:12:in `cache' 
activerecord (3.0.7) lib/active_record/query_cache.rb:31:in `call' 
activerecord (3.0.7) lib/active_record/connection_adapters/abstract/connection_pool.rb:354:in `call' 
actionpack (3.0.7) lib/action_dispatch/middleware/callbacks.rb:46:in `block in call' 
activesupport (3.0.7) lib/active_support/callbacks.rb:416:in `_run_call_callbacks' 
actionpack (3.0.7) lib/action_dispatch/middleware/callbacks.rb:44:in `call' 
rack (1.2.4) lib/rack/sendfile.rb:106:in `call' 
actionpack (3.0.7) lib/action_dispatch/middleware/remote_ip.rb:48:in `call' 
actionpack (3.0.7) lib/action_dispatch/middleware/show_exceptions.rb:47:in `call' 
railties (3.0.7) lib/rails/rack/logger.rb:13:in `call' 
rack (1.2.4) lib/rack/runtime.rb:17:in `call' 
activesupport (3.0.7) lib/active_support/cache/strategy/local_cache.rb:72:in `call' 
rack (1.2.4) lib/rack/lock.rb:11:in `block in call' 
<internal:prelude>:10:in `synchronize' 
rack (1.2.4) lib/rack/lock.rb:11:in `call' 
actionpack (3.0.7) lib/action_dispatch/middleware/static.rb:30:in `call' 
railties (3.0.7) lib/rails/application.rb:168:in `call' 
railties (3.0.7) lib/rails/application.rb:77:in `method_missing' 
railties (3.0.7) lib/rails/rack/log_tailer.rb:14:in `call' 
rack (1.2.4) lib/rack/content_length.rb:13:in `call' 
rack (1.2.4) lib/rack/handler/webrick.rb:52:in `service' 
/home/peanut/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/webrick/httpserver.rb:111:in `service' 
/home/peanut/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/webrick/httpserver.rb:70:in `run' 
/home/peanut/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/1.9.1/webrick/server.rb:183:in `block in start_thread'

來源

2011-12-22 haus

請發表你得到:) – andrewpthorp 2011-12-22 20:44:03

同樣實際的錯誤，是fields.html.erb的全部？同樣，你可以發佈你在哪裏調用這個部分，以及那個代碼是什麼樣的？ – andrewpthorp 2011-12-22 20:45:47

謝謝，編輯添加你所要求的。 – haus 2011-12-22 20:53:28

使用:locals => { :f => f }

編輯：改變我的答案。

我才意識到你正在使用：

simple_form_for

改變，要

simple_nested_form_for

這可以讓你使用nested_form選項（link_to_add，link_to_remove等）。

乾杯！

來源

2011-12-22 20:53:20 andrewpthorp

謝謝，我試過，並得到這個錯誤「未定義的局部變量或方法'f'爲＃<＃：0xab7834c>」 – haus 2011-12-22 20:56:36

表單工作正常，如果我刪除link_to_add並刪除調用，所以我認爲f不是問題在這裏:( – haus 2011-12-22 21:16:14

重新閱讀我的答案，我剛剛意識到發生了什麼我相信 – andrewpthorp 2011-12-22 21:26:46

所以我改變了new.html.erb和edit.html.erb看起來像這樣：

<h1>Agregar Cotizacion</h1> 
<div id='admin_view'> 
    <%= simple_nested_form_for @cotizacion, :html => {:multipart => true} do |f| %> 
    <%= render 'fields', :f => f %> 
    <%= f.button :submit, 'Agregar Cotizacion' %> 
     <% end%> 
</div>

，我已將此添加的routes.rb文件

resources :cotizacions do 
resources :producto_de_cotizacions 
end 
resources :producto_de_cotizacions

我不是確切地確定如何，但這確定了問題。非常感謝你的幫助。乾杯!

來源

2011-12-23 21:53:09 haus

我有這樣的錯誤，重新啓動服務器，並將此代碼添加到模型解決：

accepts_nested_attributes_for :photos, :reject_if => :all_blank, :allow_destroy => true

來源

2013-03-24 17:27:43 Plugin73

未定義的方法'link_to_add \ remove'爲＃<SimpleForm :: FormBuilder>

回答

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