我正在使用devise進行身份驗證,並讓用戶與建築物關聯。我可以創建與正確建築物適當關聯的新用戶,但如果新用戶沒有全部所需的輸入,則可以設計驗證中斷。Simple_form隱藏字段中斷在rails 3.2中設計驗證應用程序
代碼:
應用程序/模型/ user.rb
class User < ActiveRecord::Base
belongs_to :building
attr_accessible :building_id
...
end
(我知道,已經building_id attr_accessible是不理想,但我不知道如何建立關聯,而不使用隱藏場在新用戶註冊表單的building_id ...)
class Building < ActiveRecord::Base
has_many :users
...
end
在我的路線,用戶註冊嵌套在建築物內:
devise_for :users, controllers: { :registrations => "registrations" }, skip: [:registrations]
resources :users, except: [:new, :create] do
resource :approvals, only: [:update]
end
match '/:building', to: "buildings#landing"
resources :buildings, except: [:new, :create, :destroy] do
as :user do
get '/signup' => 'registrations#new', as: :new_user_registration
post '/signup' => 'registrations#create', as: :user_registration
end
...
end
應用/視圖/設計/註冊/ new.html.erb
<%= simple_form_for(resource, :as => resource_name, :url => building_user_registration_path(), :html => {:class => 'form-inline', :multipart => true }) do |f| %>
<%= render 'fields', f: f %>
<div class="inputs">
<%= f.input :role, collection: User::ROLES.collect %>
<%= f.input :password, :required => true %>
<%= f.input :password_confirmation, :required => true %>
</div>
<div class="actions">
<%= f.button :submit, "Create my account", class: "btn btn-large btn-primary" %>
</div>
<% end %>
然後,最後,在應用程序/視圖/設計/註冊/ _fields.html.erb代碼有問題的行
...
<%= f.hidden_field :building_id, value: @building.id %>
...
如果新用戶的所有必填字段被正確填寫,則會創建一個與正確的建築物適當關聯的新用戶。如果有任何必填字段爲空或無效,設計引發以下錯誤在瀏覽器中:
RuntimeError in Registrations#create
Showing .../app/views/devise/registrations/_fields.html.erb where line #7 raised:
Called id for nil, which would mistakenly be 4 -- if you really wanted the id of nil, use object_id
線#7:<%= f.hidden_field :building_id, value: @building.id %>
任何想法,將不勝感激。我敢肯定,我在這裏做一些事情不理想......
我不太明白你的意思。如果用戶沒有輸入正確的信息,驗證失敗是否會達到預期的效果? –
我聽說你,@BillyChan。更清楚的是,「成功的驗證失敗」;-)沒有第7行#7用「請更正下面的問題:」和空白的必填字段高亮顯示錶單。包含該行#7和無效輸入,我得到一個「Action Controller:Exception caught」的錯誤頁面,其中包含上述錯誤。 – BenU
「被調用的ID爲零」意味着「@ building」爲零。該對象是否真正設置並在控制器中有效? –