>From the Struts 2 FAQ
http://struts.apache.org/2.1.8.1/docs/how-do-we-repopulate-controls-when-validation-fails.html
On Fri, Jul 16, 2010 at 4:40 AM, Guy Thomas <guy.tho...@vlaamsbrabant.be> wrote:
> In a form I use the struts2 action tag to populate a drop down list:
>
> <s:actionerror />
>
> <s:form action="bookactiondispatcher" namespace="/" theme="simple">
> <table>
> <tr>
> <td>Select an action:</td>
> <td><s:action name="bookactions" namespace="/"
> executeResult="true" /></td>
> </tr>
>
> <tr>
> <td>Specify search terms:</td>
> <td><s:textfield name="searchString" size="44"
> required="true" /></td>
> </tr>
>
> <tr>
> <td><s:submit type="input" value="Voer actie uit" /></td>
> </tr>
> </table>
> </s:form>
>
>
> The "bookactions" action refers to the following jsp (bookactions.jsp):
>
> <%@ taglib prefix="s" uri="/struts-tags"%>
> <s:radio list="bookActions" value="defaultBookAction" name="bookAction"
> onclick="setTextFieldVisibility (this.value)" theme="simple" />
>
> As long as I select the select action (there is also an index action) and
> enter search terms, there is no problem; the user is taken to the search
> result page.
>
> However, the code for the bookactiondispatcher action contains a validate
> method:
>
> @Override
> public void validate ()
> {
> logger.debug ("Validating an action dispatch ...");
>
> if (bookAction.equals (SEARCH) && (searchString == null ||
> searchString.equals ("")))
> addActionError (getText ("bookindexer.error.search.nosearchstring"));
> }
>
> When the user selects the search action and forgets to specify search terms,
> he/she is taken back to the page with the form:
>
> <action name="bookactiondispatcher"
> class="be.vlaamsbrabant.bookindexer.actions.BookActionDispatcher">
> ...
> <result name="input">/index.jsp</result>
> ...
>
> However:
> - On the "input result" page the rich control for the possible book actions
> is no longer filled up.
> - I "see" the contents of index.jsp (with the form), but the URL is
> http://.../bookindexer/bookactiondispatcher.action (the url for the form
> action.)
>
> I had exactly the same problem in another application. There I removed the
> validate method and used a specific error result to redirect the user to an
> error page.
>
> How I can still use struts2 validation and have my rich controls
> (re-)populated when being redirected through an input result?
>
>
>
> -------------
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