通过params从一个选择框simple_form - rails传递多个值

Question

我有一个带有'基金'集合的simple_form，它目前将基金类别的名称和基金的id传递给控制器​​。这很好，但现在我还需要发送一个额外的参数以及基金的id。我需要通过与该类别相关联的percent数字发送。

我不知道如何实现这个目标？

<%= simple_form_for portfolio do |f| %>

<div class='row'>
  <div class='large-9 columns portfolio'>
    <table>
      <tr>
        <th>PERCENT (%)</th>
        <th>Select Fund</th>
      </tr>
      <% portfolio.demo_portfolio_distributions.sort_by(&:fc_sector).each do |distribution| %>
        <tr>
          <td>
            <%= distribution.percent %>
          </td>
          <td>
            <%= f.simple_fields_for :portfolio_items_attributes do |demo_distribution| %>
              <span class='legend-key <%= distribution.fc_sector_types.downcase.gsub(/\s/,'-') %>-key'>•</span>
              <%= demo_distribution.input "#{distribution.fc_sector.gsub(/\(.*\)/, "")}", as: :select, collection: distribution.funds, required: false,prompt: 'Select fund' %>

            <% end %>
          </td>
        </tr>

        <tr>
          <td>

          </td>
          <td>
            <%= link_to 'Add another fund', demo_portfolio_demo_portfolio_distributions_path(portfolio, distribution: distribution), method: :post, remote: true %>
          </td>
        </tr>

      <% end %>

      <noscript>
        <%= f.submit %>
      </noscript>

    </table>
  </div>
  <div class='large-2 columns portfolio-buttons'>
    <%= render 'demo_portfolio_distributions/manage_demo', :f => f, portfolio: portfolio %>
  </div>
</div>  

  

这就是现在的params：

    {"utf8"=>"✓",
 "_method"=>"put",
 "authenticity_token"=>"KA8u0WHfUsXfHfBn5aYhHkxOXqBS8UftJ0vTqkzWuAI=",
 "demo_portfolio"=>
  {"portfolio_items_attributes"=>
    {"absolute return funds"=>"123",
     "asian equity "=>"134",
     "commercial property"=>"456",
     "corporate bond"=>"678",
     "european equity "=>"654",
     "high yield bond"=>"900",
     "strategic bond"=>"000",
     "uk equity "=>"765",
     "uk smaller companies"=>"345",
     "us equity "=>"666"}},
 "commit"=>"Save Portfolio",
 "action"=>"snapshot",
 "controller"=>"demo_portfolios",
 "id"=>"335"}

模型：

class DemoPortfolioDistribution < ActiveRecord::Base
  # attr_accessible :title, :body

  attr_accessible :demo_portfolio_id, :fc_sector, :percent

  belongs_to :demo_portfolio
end

＃

class DemoPortfolio < ActiveRecord::Base

# attr_accessible :title, :body
  attr_accessible :name, :demo_portfolio_distributions_attributes, :risk, :is_example

  has_many :demo_portfolio_distributions

  accepts_nested_attributes_for :demo_portfolio_distributions, allow_destroy: true

end