使用Struts2的< s:property> < display:table>中的标记标签 [英] Use Struts2's <s:property> tag in <display:table> tags

问题描述

我正在尝试使用DisplayTag将列表添加到表中.

I am trying to add a list into a table using DisplayTag.

当我以通常的方式将list属性添加到列时，一切工作正常:

Everything works normally when I add list property to a column in the usual manner:

<display:column property="status" title="Claim Status"/>
<display:column property="authNo" title="Authorization Number" href="authSlipMasterAction">

现在，我想检查authNo是否为空；如果为空白，则不提供链接，那么如何在<display:table>标记中使用<s:if test=''>和<s:property value="">?

Now, I want to check when authNo is not blank; if it is blank, then do not provide the link, so how can I use <s:if test=''> and <s:property value=""> in the <display:table> tag ?

我尝试使用<s:property value="authNo"/>显示值，但未显示任何值(我必须显示该值，因为我想检查条件)

I've tried to display the value using <s:property value="authNo"/> but no value is shown (I have to display the value because I want to check the condition)

这是我的代码

   <display:table uid="myTable" id="display-tag" name="session.claimReportList">
   <display:column title="Authorization No"> 
    <s:property value="#attr.myTable.transNo" />
</display:column>

我也尝试过

I have also tried

      <s:property value="#session.myTable.transNo" />

推荐答案

在DisplayTag列中时，您需要在<s:property />或<s:if />中使用#attr.表示法；您还需要使用#attr. 之后在<display:table>标记中指定的uid来访问对象.

You need to use the #attr. notation in your <s:property /> or <s:if /> when inside a DisplayTag column; you also need to use the uid specified in the <display:table> tag after the #attr. to access your objects.

例如:

<display:table requestURI="actionURL" uid="myTable" />

    <display:column title="authNo">    
        <s:property value="#attr.myTable.authNo" />
    </display:column>

</display:table>

来自 OGNL基础知识-Struts 2命名对象:

#attr['foo']或#attr.foo

访问PageContext(如果有)，否则进行搜索 request/session/application

Access to PageContext if available, otherwise searches request/session/application respectively

PS:我考虑考虑使用一些较新的网格，例如 jqGrid 或数据表.

P.S: I'd consider taking a look at some newer grid like jqGrid or DataTables, though.

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