錯誤與引導選OPTGROUP

Question

當我在OPTGROUP選項單擊，在其他OPTGROUP所有選項都選得過：

<select id="ressource_regions_region_id" multiple> 
     <optgroup label="one-three"> 
     <option>One</option> 
     <option>two</option> 
     <option>three</option> 
     </optgroup> 
     <optgroup label="four-six"> 
     <option>four</option> 
     <option>five</option> 
     <option>six</option> 
     </optgroup> 
     <optgroup label="seven-nine"> 
     <option>sevent</option> 
     <option>eight</option> 
     <option>nine</option> 
     </optgroup> 
    </select> 

在JS：

$('#ressource_regions_region_id').selectpicker(); 

像這樣： bug bootstrap-select

Answer 1

嘗試爲選項添加值..

<optgroup label="one-three"> 
    <option value="One">One</option> 
    <option value="two">two</option> 
    <option value="three">three</option> 
</optgroup>