2

Content と Page の 2 つのモデルがあります

class Content < ActiveRecord::Base
   attr_accessible :large_description, :short_description
   belongs_to :contentable , :polymorphic => true
end

class Page < ActiveRecord::Base
   extend FriendlyId
   friendly_id :title, use: [:slugged, :history]
   attr_accessible :active, :menu, :slug, :title, :contents

   validates :title, presence: true

   has_many :contents, as: :contentable
end

これは、コンテンツを含む新しいページを作成するための私の簡単なフォームです

<%= form_for([:admin,@page], :html => {:class => "nice custom"}) do |f| %>
  <div class="formRow">
    <%= f.label :title, "Title"%>
    <%= f.text_field :title, :class => 'input-text'%>
  </div>
<%= f.fields_for :contents do |content_form| %>
  <div class="formRow">
   <%= content_form.label :short_description, "Short Description"%>
   <%= content_form.text_area :short_description, :class => 'tinymce expand'%>
  </div>
  <div class="formRow">
    <%= content_form.label :large_description, "Large Description"%>
    <%= content_form.text_area :large_description, :class => 'tinymce expand'%>
  </div>
<% end %>
 <div class="formRow">
    <%= f.submit "Create", :class => 'button small nice blue'%>
 </div>
<% end %>

そして最後に、これは私のページコントローラーです

class Admin::PagesController < ApplicationController
  layout 'admin'
  def index
    @pages = Page.order("created_at")
  end
  def new
    @page = Page.new
  end
  def create
    @page = Page.new(params[:page])
    if @page.save
     redirect_to page_url
    else
     render :new
     end
  end

  def show
    @page = Page.find(params[:id])
  end

  def destroy
    @page = Page.find(params[:id])
    @page.destroy
    redirect_to page_url
  end
end

名前空間管理者を使用しました。問題は、フォームを送信したときにこのエラーが表示され、なぜ不一致があるのか​​理解できません。

ActiveRecord::AssociationTypeMismatch in Admin::PagesController#create Content(#70150608194420) が予期され、取得された配列 (#70150590276780)

activerecord (3.2.8) lib/active_record/associations/association.rb:204: raise_on_type_mismatch' activerecord (3.2.8) lib/active_record/associations/collection_association.rb:308:inin replace ' activerecord (3.2.8) lib/active_record/associations/collection_association.rb:308: in each' activerecord (3.2.8) lib/active_record/associations/collection_association.rb:308:in replace' activerecord (3.2.8) lib/active_record/associations/collection_association.rb:41: writer' activerecord (3.2.8) lib/active_record/associations/builder/association.rb:51:indefine_writers の activerecord 内のブロック (3.2.8) lib/active_record/attribute_assignment.rb:94:block in assign_attributes' activerecord (3.2.8) lib/active_record/attribute_assignment.rb:93:inそれぞれの activerecord (3.2.8) 内 lib/active_record/attribute_assignment.rb: 93: assign_attributes' activerecord (3.2.8) lib/active_record/base.rb:498:ininitialize' app/controllers/admin/pages_controller.rb:13:in new' app/controllers/admin/pages_controller.rb:13:increate' 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:inprocess_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:inblock in process_action' activesupport (3.2.8) lib/active_support/callbacks.rb:414:in _run__3558390125630086563__process_action__2004224720818030891__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:inprocess_action' actionpack (3.2.8) lib/action_controller/metal/instrumentation.rb:30:inblock in process_action' activesupport (3.2.8) lib/active_support/notifications.rb:123:inブロック in instrument' activesupport (3.2.8) lib/active_support/notifications/instrumenter.rb: 20: instrument' activesupport (3.2.8) lib/active_support/notifications.rb:123:in Instrument' アクションパック (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:inprocess_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:inprocess' actionpack (3.2 .8) lib/abstract_controller/rendering.rb:45:inprocess' actionpack (3.2.8) lib/action_controller/metal.rb:203:inディスパッチ' アクションパック (3.2.8) lib/action_controller/metal/rack_delegation.rb:14: dispatch' actionpack (3.2.8) lib/action_controller/metal.rb:246:in アクションのブロック内' アクションパック (3.2.8) lib/action_dispatch/routing/route_set.rb:73:call' actionpack (3.2.8) lib/action_dispatch/routing/route_set.rb:73:inディスパッチ内のアクションパック (3.2. 8) lib/action_dispatch/routing/route_set.rb:36: call' journey (1.0.4) lib/journey/router.rb:68:inin call ' ジャーニー (1.0.4) lib/journey/router.rb:56: in each' journey (1.0.4) lib/journey/router.rb:56:incall ' 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:35:incall' 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:incall' actionpack (3.2.8) lib/action_dispatch/middleware/flash.rb:242:in call' rack (1.4.1) lib/rack/session/abstract/id.rb:205:incontext' Rack (1.4.1) lib/rack/session/abstract/id.rb:200:in call' actionpack (3.2.8) lib/action_dispatch/middleware/cookies.rb:339:incall' activerecord (3.2.8) lib /active_record/query_cache.rb:64:incall' 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 _3479256987463636693_ call _4454778504255292268__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:incall' 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:incall' railties (3.2.8) lib/rails/rack/logger.rb:26:in call_app' railties (3.2.8) lib/rails/rack/logger.rb:16:incall' actionpack (3.2.8) lib/action_dispatch/middleware/request_id.rb:22:in call' rack (1.4.1) lib/rack/methodoverride.rb:21:incall' rack ( 1.4.1) lib/rack/runtime.rb:17:in call' activesupport (3.2.8) lib/active_support/cache/strategy/local_cache.rb:72:incall' ラック (1.4.1) lib/rack/lock.rb:15:incall' actionpack (3.2.8) lib/action_dispatch/middleware/static.rb:62:incall' railties (3.2.8) lib/rails/engine.rb:479:in call' railties (3.2.8) lib/rails/application.rb:223:incall' rack (1.4.1) lib/rack/content_length.rb:14:in call' railties (3.2.8) lib/rails/rack/log_tailer.rb:17:incall' rack (1.4.1) lib/rack/ handler/webrick.rb:59:in service' /Users/ogonbat/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/webrick/httpserver.rb:138:in service' /Users/ogonbat/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/webrick/httpserver.rb:94:in run' /Users/ogonbat/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/webrick/server.rb:191:in block in start_thread'

これはリクエストパラメータです

{"utf8"=>"✓", "authenticity_token"=>"g44p+IPxvdm2ouGAE2u2dV/cCKK8uF6G3XLL4z26zrI=", "page"=>{"title"=>"zfdzfdsf", "contents"=>{"short_description"=> "

sdfdsf

", "大きな説明"=>"

dsfdsf

"}}, "コミット"=>"作成"}

あなたの助けを前もって感謝します

4

2 に答える 2

2

page の場合、配列ではなくハッシュでhas_many :contentsあるのは奇妙です...params[:page][:contents]

不一致の一方または他方の端を修正します。has_many 関係があり、そのためのフォームを作成したい場合は、メイン オブジェクトにいくつかの空のアイテムを事前入力し、それらを繰り返し処理して、対応するフィールドを生成します。

レールでネストされたフォームへのすべての応答を確認できます- has_many 関係で属性にアクセスして、必要なものについてのアイデアを得ることができます。

于 2012-10-15T00:42:03.810 に答える
2

モデルに追加accepts_nested_attributes_for :contentsしてみてください。Pageこれでうまくいくと思います (基本的にcontents、params [:page][:contents] 配列から関連するレコードを作成する必要があります)。

編集

これを機能させるには、属性contents_attributesとしても追加する必要がありますattr_accessible

于 2012-10-15T08:48:45.320 に答える