Rails选择多个选项只发送一个 [英] Rails select with multiple options only sends one

问题描述

 < form accept-charset =UTF-8action =/ contracts / <％= params [：id]％> / addConsultantsmethod =POSTid =updateConsultants><！----> 
 
< div style =margin：0; padding：0; display：inline> 
< input name =utf8type =hiddenvalue =✓> 
< input name =authenticity_tokentype =hiddenvalue =<％= session [：_ csrf_token]％>> 
< / div> 
 
< div class =consultant_selector> 
< h2>顾问< / h2> 
 
  <％@ users.each do | u | ％GT; 
< option value =<％= u [：id_user]％>><％= u [：name]％>< / option> 
<％end％> 
< / select> 
 
< ul> 
< li class =triangle_rightid =add_consultant>< / li> 
< li class =triangle_leftid =remove_consultant>< / li> 
< / ul> 
 
 < / select> 
< / div> 
 
< div> 
< input type =submitvalue =Mettreàjour/> 
< / div> 
< / form> 
  

而在我的控制器中：

  def add_consultants 
 @contract = Contract.find（params [：id]）
 @consultants = params [：consultants_selected]; 
 puts------ Consultants：＃{@ consultants}
 
 redirect_to contract_path 
 end 
  

我的想法是，我可以从第一个选择中选择姓名，点击三角形将其移动到第二个，然后提交表单以将这些姓名分配给合同。然而，当我这样做时，对 puts >的调用仅打印出第二个select中的3个ID（它们都有选定的属性为 true ）。如何获得多个值？

解决方案

刚刚在这里找到答案： https://stackoverflow.com/a/2196522/1796742

更改第二个选择的名称：

 < select name =consultants_selectedsize =10multiple> 
< / select> 
  

收件人：

 < select name =consultants_selected []size =10multiple> 
< / select> 
  

已处理。

I have this form :

<form accept-charset="UTF-8" action="/contracts/<%= params[:id] %>/addConsultants" method="POST" id="updateConsultants"><!---->

  <div style="margin:0;padding:0;display:inline">
    <input name="utf8" type="hidden" value="✓">
    <input name="authenticity_token" type="hidden" value="<%= session[:_csrf_token] %>">
  </div>

  <div class="consultant_selector">
    <h2>Consultants</h2>

    <select name="consultants_available" size="10" multiple>
      <% @users.each do |u| %>
        <option value="<%= u[:id_user] %>"><%= u[:name] %></option>
      <% end %>
    </select>

    <ul>
      <li class="triangle_right" id="add_consultant"></li>
      <li class="triangle_left" id="remove_consultant"></li>
    </ul>

    <select name="consultants_selected" size="10" multiple>
    </select>
  </div>

  <div>
    <input type="submit" value="Mettre à jour" />
  </div>
</form>

And in my controller :

  def add_consultants
    @contract = Contract.find(params[:id])
    @consultants = params[:consultants_selected];
    puts "------ Consultants: #{@consultants}"

    redirect_to contract_path
  end

The idea is that I can select names from the first select, move them to the second by clicking on the triangle and then submit the form to assign these names to a contract. However, when I do this the call to puts only prints one ID out of the 3 I have in the second select (all three of them have the selected attribute to true). How do I get multiple values?

解决方案

Just found the answer here : https://stackoverflow.com/a/2196522/1796742

Changing the name of the second select from:

<select name="consultants_selected" size="10" multiple>
</select>

To :

<select name="consultants_selected[]" size="10" multiple>
</select>

Worked.

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