I think I can explain it now.
I hit the action servlet first invoking preCreate function. This function
populates various lists of beans needed for dropdowns and put these lists in
the request object and forward to a JSP. The JSP reads these lists and
displays the dropdowns. So far so good!
preCreate --->request object populated with lists ---> JSP reads from
request for dropdown lists
Now... enter the Validation framework! I think it is hijacking this series!
preCreate ---> request populated with lists ---> Validator framework --->
JSP
Now the jump from Validator framework to JSP means that all request scope
objects (the lists) are lost! :(
How should I architect ? Should I make these lists session scope? I somehow
dont like to make them session scope, because they are really request scope!
Can someone comment on my explanation / help me with a solution ??
Thanks much.
Regards,
Raghu
On 11/12/05, Martin Gainty <[EMAIL PROTECTED]> wrote:
>
> I didnt see the contents E.G. <tag> </tag> for your c.tld ??
> Martin-
> ----- Original Message -----
> From: "Raghu Kanchustambham" <[EMAIL PROTECTED]>
> To: "Struts Users Mailing List" <user@struts.apache.org>
> Sent: Saturday, November 12, 2005 10:37 AM
> Subject: Re: Fw: Validator framework introduces errors
>
>
> Hi Martin,
> I do something like:
> request.setAttribute("centreList",DataAccessManager.getCentres());
> before invoking the jsp.
> The strange part is, the minute i remove validation.xml from the validator
> path, effectively removing the validation framework, every thing works
> just
> fine! Just cant explain it ! :(
> Thanks again in advance to anyone who can explain this!
> Please find the StudentEnquiry.jsp attached.
> ----------------------------------------
>
> <%@ page import="
> com.tuningfork.student.businessobject.enquiry.StudentEducationDetail"%>
> <%@ page language="java" %>
> <%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" %>
> <%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %>
> <%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic" %>
> <%@ taglib uri="/WEB-INF/c.tld" prefix="c" %>
> <%@ taglib uri="/WEB-INF/struts-layout.tld" prefix="layout" %>
>
> <layout:html>
> <head>
> <title>Student Enquiry</title>
>
> <link rel="stylesheet" type="text/css" href="../mystyle.css" />
> <SCRIPT>function set(target) {document.forms
> [0].operation.value=target;}</SCRIPT>
> </head>
> <body>
> <h2>Student Enquiry</h2>
> <html:errors/>
> <c:set var="operationVar">
> <%= request.getParameter("nextOperation")%>
> </c:set>
>
> <c:set var="readOnlyForm"> false </c:set>
>
> <c:if test="${operationVar=='null' || operationVar=='ok'}"> <!-- view
> doesnt
> have a Next operation -->
> <c:set var="readOnlyForm"> true </c:set>
> </c:if>
> <html:form action="StudentEnquiry.do"
> onsubmit="validateStudentEnquiryForm(this);">
> <input type="hidden" name="operation"
> value="<%=request.getParameter("nextOperation")%>"
> />
> <table width="100%">
> <tr>
> <td rowspan="2">
> <[EMAIL PROTECTED] file="StudentDemographics.jsp"%>
> </td>
> <td>
> <layout:grid cols="2">
> <layout:select property="enquiryCentreId" size="${selectBoxSize}"
> key="Enquiry Centre">
> <layout:options collection ="centreList" property="id" labelName="name" />
> </layout:select>
> <layout:select property="enquiryCourseId" size="${selectBoxSize}"
> key="Enquiry Course">
> <layout:optionsCollection name="courseList" value="id" label="name"/>
> </layout:select>
> </layout:grid>
>
> </td>
> </tr>
>
>
> <tr>
> <td>
> </td>
> <td align="center">
> <html:submit>${operationVar} </html:submit>
> <html:cancel>cancel</html:cancel>
> </td>
> </tr>
>
> </table>
>
>
> </html:form>
>
> </body>
> </layout:html>
> ------------------------------------------------
>
>
> On 11/12/05, Martin Gainty <[EMAIL PROTECTED]> wrote:
> >
> > I did'nt see the (StudentEnquiry.jsp) jsp page which references
> centreList
> > bean?
> > I also dont see the code for centreList bean?
> >
> > Martin-
> >
> > ----- Original Message -----
> > From: "Raghu Kanchustambham" <[EMAIL PROTECTED]>
> > To: "Struts Users Mailing List" <user@struts.apache.org>
> > Sent: Saturday, November 12, 2005 9:40 AM
> > Subject: Validator framework introduces errors
> >
> >
> > Hi,
> > The minute I introduced Validator framework in my application .....
> > it started giving me the following error when I accessed the JSP ....
> > centreList is used as a parameter for the dropdown. The minute I remove
> > the
> > validation.xml from the path... the application runs fine again! :(
> > very strange and i am not able to explain this behavior .. can someone
> > help?
> > Thanks much in advance.
> > Regards,
> > Raghu
> >
> > javax.servlet.jsp.JspException: Cannot find bean centreList in any scope
> > org.apache.struts.util.RequestUtils.lookup(RequestUtils.java:938)
> > fr.improve.struts.taglib.layout.field.OptionsCollectionTag.doStartTag(
> > OptionsCollectionTag.java:115)
> >
> >
> org.apache.jsp.student.StudentEnquiry_jsp._jspx_meth_layout_optionsCollection_0
> > (StudentEnquiry_jsp.java:1088)
> > org.apache.jsp.student.StudentEnquiry_jsp._jspx_meth_layout_select_2
> > (StudentEnquiry_jsp.java:1062)
> > org.apache.jsp.student.StudentEnquiry_jsp._jspx_meth_layout_grid_1
> > (StudentEnquiry_jsp.java:1028)
> > org.apache.jsp.student.StudentEnquiry_jsp._jspService
> > (StudentEnquiry_jsp.java:258)
> >
> >
> >
> >
> >
> > My validation.xml (very simple one):
> >
> > <!DOCTYPE form-validation PUBLIC
> > "-//Apache Software Foundation//DTD Commons Validator Rules
> > Configuration 1.0//EN"
> > "http://jakarta.apache.org/commons/dtds/validator_1_0.dtd";>
> >
> >
> > <form-validation>
> > <formset>
> > <form name="studentEnquiryForm">
> > <field property="studentEnquiry.firstName" depends="required">
> > <arg0 key="firstName.mandatory"/>
> > </field>
> > </form>
> > </formset>
> > </form-validation>
> >
>
