Question

请帮我解决这个问题我有这个选择框

<select name="company">
  <g:each in="${grailsApplication.config.Companies['No']}" var="no" status="index">
     <option value="${no}">${no}: ${grailsApplication.config.Companies['Name'][index]}</option>
</g:each>
</select>

选择框的值如下 option1 01：abc option2 02：def

然后，我使用表单更新，当我选择option2时，它将值保存到db，但在选择框中，默认值为01：abc，如何在更新后将其更改为02：def。

Answer 1

假设您要在savedValue中发送已保存的值：

<select name="company">
  <g:each in="${grailsApplication.config.company}" var="company" status="index">
    <g:if test="${grailsApplication.config.company['no'][index] == savedValue}">
        <option value="${grailsApplication.config.company['no'][index]}" selected>${grailsApplication.config.company['name'][index]}</option>
    </g:if>
    <g:else>
        <option value="${grailsApplication.config.company['no'][index]}">${grailsApplication.config.company['name'][index]}</option>
    </g:else>
  </g:each>
</select>

HTML选择框，显示更新的值

1 个答案: