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PODynamically binding lists with Spring's form tag
 

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    <p>I have a command object <code>FaxForm</code> and it holds a list of <code>FaxStatus</code> objects inside a <code>faxStatusList</code> property. </p> <pre><code>public class FaxForm { private List&lt;FaxStatus&gt; faxStatusList; public void setFaxStatusList(List&lt;FaxStatus&gt; faxStatusList) { this.faxStatusList = faxStatusList; } public List&lt;FaxStatus&gt; getFaxStatusList() { return faxStatusList; } } </code></pre> <p>I initially had a JSP page that would bind the objects by performing the following:</p> <pre><code>&lt;c:forEach items="${esaFaxForm.faxStatusList}" var="item" varStatus="loop"&gt; &lt;tr class="tableAltBackground"&gt; &lt;td&gt; &lt;form:checkbox path="faxStatusList[${loop.index}].selected"/&gt; &lt;/td&gt; &lt;td&gt; &lt;form:select path="faxStatusList[${loop.index}].status" items="${esaFaxForm.statusOptions}" onchange="checkThisBox(this);"/&gt; &lt;/td&gt; &lt;td&gt; &lt;a href="${statusContUrl}?id=${item.id}&amp;status=${item.status}" onclick="openFaxWindow('${viewFaxUrl}?id=${item.id}', ${loop.index});"&gt;${item.name}&lt;/a&gt; &lt;form:hidden path="faxStatusList[${loop.index}].name"/&gt; &lt;/td&gt; &lt;td&gt; &lt;a href="${statusContUrl}?id=${item.id}&amp;status=${item.status}" onclick="openFaxWindow('${viewFaxUrl}?id=${item.id}', ${loop.index});"&gt;${item.id}&lt;/a&gt; &lt;form:hidden path="faxStatusList[${loop.index}].id"/&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/c:forEach&gt; </code></pre> <p>However, I am trying to figure out how I could do the binding without the forEach loop and index. The examples on the <a href="http://static.springsource.org/spring/docs/2.0.x/reference/mvc.html" rel="nofollow noreferrer">Spring</a> website show the binding by setting the path to the list name. Is there a way to bind the properties? I've tried this but it fails:</p> <pre><code>&lt;form:checkbox path="faxStatusList.faxStatus.selected"/&gt; &lt;form:select path="faxStatusList.faxStatus.status" items="${esaFaxForm.statusOptions}"/&gt; </code></pre> <p>The faxStatusList has a getter and setter method and the FaxStatus variables each have getter/setter properties. I get the error "Invalid property 'faxStatusList.faxStatus' of bean class..."</p>
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    1. COfaxStatusList is a indexed property. So you can not use something like faxStatusList.faxStatus. Use faxStatusList[<CURRENT_INDEX>].faxStatus instead.
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    2. COI actually like your current code as an answer, as it offers a great deal of flexibility.
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      1. USSteve
 

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