Rails 3.2選擇記錄時下一個選項可用表格

我有一個表單，其中有來自我數據庫中其他表格的多個選擇。Rails 3.2選擇記錄時下一個選項可用表格

我有一個vestigingen（地點）和organisaties（組織）之間的關係，我想隱藏該特定組織的選項，直到它在下拉列表中選中。所以當它被選中時我想選擇哪個位置。我想隱藏的位置時，沒有任何組織選擇

截圖： enter image description here

我希望你明白我的意思。

感謝

編輯：這是我的_form.html.erb

<%= form_for(@contracten) do |f| %> 
    <% if @contracten.errors.any? %> 
    <div id="error_explanation"> 
     <h2><%= pluralize(@contracten.errors.count, "error") %> prohibited this contracten from being saved:</h2> 

     <ul> 
     <% @contracten.errors.full_messages.each do |msg| %> 
     <li><%= msg %></li> 
     <% end %> 
     </ul> 
    </div> 
    <% end %> 

    <div class="field"> 
    <%= f.label :naam %><br /> 
    <%= f.text_field :naam %> 
    </div> 
    <div class="field"> 
    <%= f.label :omschrijving %><br /> 
    <%= f.text_area :omschrijving %> 
    </div> 
    <div class="field"> 
    <%= f.label :organisatie %><br /> 
    <%= f.select :organisatieid, options_for_select(@organisaties.map{ |f| [f.naam, f.id] }), :include_blank => true %> 
    </div> 
    <div class="field"> 
    <%= f.label :vestiging %><br /> 
    <%= f.select :vestigingid, options_for_select(@vestigingens.map{ |f| [f.naam, f.id] }), :include_blank => true %> 
    </div> 
    <div class="field"> 
    <%= f.label :Beheerder %><br /> 
    <%= f.select :persoonid, options_for_select(@personen.map{ |f| [f.naam, f.id] }), :include_blank => true %> 
    </div> 
    <div class="field"> 
    <%= f.label :contractsoort %><br /> 
    <%= f.select :contractsoortid, options_for_select(@contractsoorten.map{ |f| [f.naam, f.id] }), :include_blank => true %> 
    </div> 
    <div class="field"> 
    <%= f.label :datumingang %><br /> 
    <%= f.datetime_select :datumingang %> 
    </div> 
    <div class="field"> 
    <%= f.label :datumeinde %><br /> 
    <%= f.date_select :datumeinde %> 
    </div> 
    <div class="field"> 
    <%= f.label :contractduur %><br /> 
    <%= f.number_field :contractduur, :placeholder => 'in jaren' %> 
    </div> 
    <div class="field"> 
    <%= f.label :opzegtermijn %><br /> 
    <%= f.number_field :opzegtermijn, :placeholder => 'In Maanden' %> 
    </div> 
    <div class="field"> 
    <%= f.label :betalingsperiode_eenheid_id %><br /> 
    <%= f.number_field :betalingsperiodeeenheidid, :disabled => 'true' %> 
    </div> 
    <div class="field"> 
    <%= f.label :betalingstermijn %><br /> 
    <%= f.number_field :betalingstermijn %> 
    </div> 
    <br> 
    <div class="actions"> 
    <%= f.submit "Toevoegen", :class => 'button3' %> 
    </div> 
<% end %> 
<br>

來源

2012-07-09 Kees Sonnema