2

私は次の3つのモデルを持っています(レール2.3.8)

    class Outbreak < ActiveRecord::Base
        has_many :incidents, :dependent => :destroy
        has_many :locations, :through => :incidents

        accepts_nested_attributes_for :incidents, :allow_destroy => true
        accepts_nested_attributes_for :locations, :allow_destroy => true, :reject_if => proc { |attrs| attrs.all? { |k, v| v.blank? } }

    end

   class Incident < ActiveRecord::Base
        belongs_to :outbreak
        belongs_to :location
   end


   class Location < ActiveRecord::Base
 has_many :incidents
 has_many :outbreaks, :through => :incidents

     accepts_nested_attributes_for :incidents, :allow_destroy => true

   end

フォームのパラメータは問題ないようです

"outbreak" => {"locations_attributes" => {"0" => {"lon" => "-1.39"、 "placename" => "wetwe"、 "hpu_id" => "15"、 "postcode" = > "so1 1aa"、 "region_id" => "10"、 "address_1" => ""、 "town" => "Bargate"、 "address_2" => ""、 "address_3" => ""、 "lat "=>" 50.89 "}}、" Incidents_attributes "=> {" 0 "=> {" subtype_id "=>" 7 "、" category_id "=>" 1 "、" detail "=>" "、" subcategory_id " =>"2"}}}}

ただし、アウトブレイクが保存されると、インシデントテーブル(結合テーブル)に3つの行が作成され、アウトブレイクテーブルとロケーションテーブルに1つの行が作成されます。

インシデントテーブルの行は、次のようにパラメータから完全に入力されていません。

id outbreak_id location_id category_id subcategory_id subtype_id detail  created_at    updated_at 

 57 23   NULL     1       2           7                          2010-11-25 14:45:18.385905  2010-11-25 14:45:18.385905 
 58 23   27         NULL       NULL        NULL    NULL           2010-11-25 14:45:18.39828  2010-11-25 14:45:18.39828 
 59 23   27         NULL         NULL     NULL      NULL           2010-11-25 14:45:18.403051  2010-11-25 14:45:18.403051 

これは、パラメーターの形式または複数のaccepts_nested_attributes_forメソッドのいずれかが原因である必要があります-すべてのパラメーター情報を含む単一の行をインシデントテーブルに入力するにはどうすればよいですか?

4

2 に答える 2

4

今週これで 2 回目、私は自分自身の質問に答えました ^^ あきらめてネットに投稿して助けを求める前に、もっと努力することを教えてくれます。

それでも、元の質問を見た後、適切に答えるのに十分な情報を含めていませんでした-問題は(モデルのセットアップを除いて)、アウトブレイクコントローラーの新しいメソッドのアウトブレイクコンストラクターにありました。

元の Outbreaks_controller

def new

    @outbreak = Outbreak.new
    @outbreak.risks.build
    //links locations directly to Outbreak instead of through Incidents
    @outbreak.locations.build
    @outbreak.incidents.build

    respond_to do |format|
      format.html # new.html.erb
      format.xml  { render :xml => @outbreak }
    end
end

Outbreaks_controllerの改訂

def new

    @outbreak = Outbreak.new
    @outbreak.risks.build
    //builds Incidents then a Location through that incident
    @outbreak.incidents.build.build_location

    respond_to do |format|
      format.html # new.html.erb
      format.xml  { render :xml => @outbreak }
    end
end

3機種の変更点

    class Outbreak < ActiveRecord::Base
        has_many :incidents, :dependent => :destroy
        has_many :locations, :through => :incidents

        accepts_nested_attributes_for :incidents, :allow_destroy => true


    end

   class Incident < ActiveRecord::Base
        belongs_to :outbreak
        belongs_to :location

        accepts_nested_attributes_for :location, :allow_destroy => true
   end


   class Location < ActiveRecord::Base
       has_many :incidents
       has_many :outbreaks, :through => :incidents

   end

これは問題なく動作するようです-作成アクションとメインフォームも投稿しました

于 2010-11-26T11:37:03.887 に答える
1

作成アクションには、:outbreak用に提供されたネストされたパラメーターのみが必要です(モデルが機能します)。

def create

    @outbreak = Outbreak.new(params[:outbreak])
    @outbreak.user_id = current_user.id

        respond_to do |format|
     if @outbreak.save
        flash[:notice] = 'Outbreak was successfully created.'
        format.html { redirect_to(@outbreak) }
        format.xml  { render :xml => @outbreak, :status => :created, :location => @outbreak }
      else
        format.html { render :action => "new" }
        format.xml  { render :xml => @outbreak.errors, :status => :unprocessable_entity }
      end
    end
end

発生フォームはかなり長いので、前述の2つのセクションに切り詰めました(ただし、ここには、アイデアを得るのに必要な数よりも多くの属性とフィールドがあります)。

ネストされたフィールドのHTML要素IDの例は、Javascriptobserve_fieldヘルパーの下部にあります。パーシャルのnested_attributes_forのAJAX更新について行った投稿も、accepts_nested_attributes_forのAJAX更新に役立つ可能性があります。

    <% form_for(@outbreak, :html => {:multipart => true}) do |form| %>
    <%= form.error_messages %>
    <div id="tabs">
        <ul>

            <li ><a href="#tabs_b">Outbreak</a></li>
            <li ><a href="#tabs_c">Location</a></li>

        </ul>   


            <div id="tabs_b">
                <fieldset id="b" class="form_div">
                    <legend>Outbreak</legend>

                    <fieldset>
                        <legend>References</legend>
                      <div class="left_form">
                        <%= form.label :user_reference %>
                      </div>
                      <div class="right_form">
                        <%= form.text_field :user_reference %>
                      </div>
                      <div style="clear:both;"></div>

                    </fieldset>

                </fieldset>
            </div>
            <div id="tabs_c">
                <fieldset id="c" class="form_div" >

                    <legend>Location</legend>
                      <div id="location_error"></div>
                            <fieldset>
                            <legend>Setting</legend>
                <% form.fields_for :incidents do |incident_form| %>

                                  <div class="left_form">
                                    <%= incident_form.label :category_id %>
                                  </div>

                                  <div class="right_form">
                                    <div id="incident_category_select">
                                    <%= render :partial => 'category_select', :locals => {:categories => @categories, :incident_form => incident_form} %>
                                    </div>
                                  </div>
                                  <div style="clear:both;"></div>

                                  <div class="left_form">
                                    <%= incident_form.label :subcategory_id %>
                                  </div>
                                  <div class="right_form">
                                    <div id="incident_subcategory_select">
                                    <%= render :partial => 'subcategory_select', :locals => { :subcategories => @subcategories, :incident_form => incident_form } %>
                                    </div>
                                  </div>
                                  <div style="clear:both;"></div>
                                  <div class="left_form">
                                    <%= incident_form.label :subtype_id %>
                                  </div>
                                  <div class="right_form">
                                    <div id="incident_subtype_select">
                                    <%= render :partial => 'subtype_select',  :locals => { :subtypes => @subtypes, :incident_form => incident_form } %>
                                    </div>
                                  </div>
                                  <div style="clear:both;"></div>
                                  <div id="cuisine_div">
                                    <% if @outbreak.outbreak_type == "FOODBORNE" %>
                                        <div class="left_form">
                                            <%= label :incident, :cuisine_id %>
                                        </div>
                                        <div class="right_form">
                                            <% cuisine_select = (@incident != nil ? @incident.cuisine_id.to_i : '') %>
                                            <%= incident_form.select( :cuisine_id, "<option value='' >Please select</option>" + options_from_collection_for_select(@cuisines, :id, :name, cuisine_select)) %>
                                        </div>
                                    <% end %>

                                  </div>
                                  <div style="clear:both;"></div>
                                  <div class="left_form">
                                    <%= incident_form.label :detail %>
                                  </div>
                                  <div class="right_form">
                                    <%= incident_form.text_field :detail %>
                                  </div>


                        </fieldset>
                        <fieldset>
                            <legend>Details</legend>
                            <%  incident_form.fields_for :location do |location_form| %>
                                  <div style="clear:both;"></div>
                                   <div class="left_form">
                                    <%= location_form.label :placename %>
                                  </div>
                                  <div class="right_form">
                                    <%= location_form.text_field :placename %>
                                  </div> 
                                  <div style="clear:both;"></div>
                                  <div class="left_form">
                                    <%= location_form.label :address_1 %>
                                  </div>
                                  <div class="right_form">
                                    <%= location_form.text_field :address_1 %>
                                  </div>
                                  <div style="clear:both;"></div>
                                  <div class="left_form">
                                    <%= location_form.label :address_2 %>
                                  </div>
                                  <div class="right_form">
                                    <%= location_form.text_field :address_2 %>
                                  </div>
                                  <div style="clear:both;"></div>
                                  <div class="left_form">
                                    <%= location_form.label :address_3 %>
                                  </div>
                                  <div class="right_form">
                                    <%= location_form.text_field :address_3 %>
                                  </div> 
                                  <div style="clear:both;"></div>
                                  <div class="left_form">
                                    <%= location_form.label :town %>
                                  </div>
                                  <div class="right_form">
                                    <%= location_form.text_field :town %>
                                  </div>
                                  <div style="clear:both;"></div>
                                  <div class="left_form">
                                    <%= location_form.label :postcode %>
                                  </div>
                                  <div class="right_form">
                                    <%= location_form.text_field :postcode %>
                                  </div>
                                  <div style="clear:both;"></div>        
                                  <div class="left_form">
                                    <%= location_form.label :region_id %>
                                  </div>
                                  <div class="right_form" >
                                        <% region_select = (@location != nil ? @location.region_id.to_i : '') %>
                                    <%= location_form.select(:region_id, "<option value=''>Select a region</option>" + options_from_collection_for_select(@regions, :id, :name, region_select)) %>
                                  </div>
                                  <div style="clear:both;"></div>
                                  <div class="left_form">
                                    <%= location_form.label :hpu_id %>
                                  </div>
                                  <div class="right_form" >
                                    <% hpu_select = (@location != nil ? @location.hpu_id.to_i : '') %>
                                    <%= location_form.select(:hpu_id, "<option value=''>Select a HPU</option>" + options_from_collection_for_select(@hpus, :id, :name, hpu_select)) %>
                                  </div>
                                  <div style="clear:both;"></div>

                                <%= location_form.hidden_field :lon, :value => '' %>
                                <%= location_form.hidden_field :lat, :value => '' %>
                                <%= hidden_field_tag :postcode_error, :value => '0' %>
                                <% end %>
                          </fieldset>


                    <% end %>       

                </fieldset>

            </div>


    </div>
    <% end %>

    <div style="clear: both; margin: 10px;"></div>
    <%= observe_field(:outbreak_incidents_attributes_0_location_attributes_postcode, 
              :url => { :controller => :locations, :action => :find_lonlat },
              :on => "onchange",
              :loading => "Element.show('loader')",
              :success => "Element.hide('loader')",
              :with => "'postcode=' + encodeURIComponent($('outbreak_incidents_attributes_0_location_attributes_postcode').value)" ) %>
于 2010-12-02T15:07:04.340 に答える