Hi Kumar The datagrid tag works with the JSTL expression language. The "items" and "var" attributes works very much like the <c:for /> tag. In the "items" attribute you pass the Collection or Iterator or Array[] that you want to use in the datagrid. To do this you must put your object in the request, page, application or session context of you page. After that you access your object with the expression language ${name}. I'll give you an example:
<% ArrayList list; request.setAttribute ("myList", list); %> <ui:dataGrid items="${myList}" ... > So now that you have set your List you use the "var" attribute to tell the datagrid the name of the variable that it will use to store each object in the List in each iteration. <ui:dataGrid items="${myList}" var="myObject" > Now you define your columns and define what you want to see in each column with the <item /> element. You have to use the JSTL expression language to access attributes, or key-values from your object. For example if myObject has a firstName attribute you can use it like this: <ui:dataGrid items="${myList}" var="myObject" > <columns> <column> <item value="${myObject.firstName}"/> </column> </columns> </ui:dataGrid> You can use the JSTL Expression Language to define concatenation or arithmetic operations: <ui:dataGrid items="${myList}" var="myObject" > <columns> <column> <item value="${myObject.firstName + ' ' + myObject.lastName}"/> </column> </columns> </ui:dataGrid> In the case where your values are Numbers or Dates you can format them. <ui:dataGrid items="${myList}" var="myObject" > <columns> <column> <item value="${myObject.birthDate}" format="dd/MM/yy"/> </column> </columns> </ui:dataGrid> You can use the <header/>, <footer/> elements to define headers and footers for your datagrid. Hope this helps. -----Mensaje original----- De: Kumar Thirunavukarasu [mailto:[EMAIL PROTECTED] Enviado el: Friday, July 15, 2005 6:31 PM Para: [EMAIL PROTECTED] Asunto: RE: Newbie to Datagrid Taglib Mr.Nestor, I got past this error but I need some documentation around how you are mapping the bean object to datagrid tag. It is not very clear in the docs provided. What is var attribute is doing in datagrid. How the item element works. How to use the value attribute in Item element. Any help in some kind of documentation will be helpful. Right now my page is building blank table and producing no data. <[EMAIL PROTECTED] import="java.util.ArrayList" %> <[EMAIL PROTECTED] import="com.freddiemac.pvs.ui.web.form.ParameterViewForm" %> <%@ page import="com.freddiemac.pvs.ui.web.form.Payup" %> <%@ page info="BasicTemplate" %> <%@ taglib uri="/WEB-INF/taglib/struts-html.tld" prefix="html" %> <%@ taglib uri="/WEB-INF/taglib/struts-logic.tld" prefix="logic" %> <%@ taglib uri="/WEB-INF/taglib/struts-tiles.tld" prefix="tiles" %> <%@ taglib uri="/WEB-INF/taglib/taglibs-datagrid.tld" prefix="ui" %> <html:html> <head> <html:base/> </head> <body> <html:errors/> <html:form action="/SystemParameterView"> <%! ArrayList payupList = new ArrayList();%> <% payupList.add(new Payup("LLB","LLB PVS","Yes")); payupList.add(new Payup("LLB1","LLB PVS1","No")); request.setAttribute ("payupList", payupList); %> <style> th a:link { text-decoration: none; color: black } th a:visited { text-decoration: none; color: black } .header1 { border: 1px solid black; border-right: none; background-color: #EFEBDE; font-family: arial; font-size: 10pt; font-weight: normal } .header2 { border: 1px solid black; background-color: #EFEBDE; font-family: arial; font-size: 10pt; font-weight: normal } .footer1 { border: 1px solid black; border-right: none; background-color: #EFEBDE; font-family: arial; font-size: 10pt } .footer2 { border: 1px solid black; background-color: #EFEBDE; font-family: arial; font-size: 10pt } .item1 { border: 1px solid #EFEBDE; border-right: none; border-bottom: none; background-color: white; font-family: arial; font-size: 9pt } .item2 { border: 1px solid #EFEBDE; border-bottom: none; background-color: white; font-family: arial; font-size: 9pt } </style> <% out.println("TEST"); %> <ui:dataGrid items="${payupList}" var="payup" name="PayupView" cellPadding="1" cellSpacing="0"> <columns> <column width="100" order="true"> <header value="Code" hAlign="center" styleClass="header1"/> <item value="${code}" hAlign="left" styleClass="item1"/> <footer value="Total ${total}" hAlign="left" styleClass="footer1"/> </column> <column width="200" order="true"> <header value="Description" hAlign="center" styleClass="header1"/> <item value="${desc}" hAlign="left" pattern="$#,##0.00" styleClass="item1"/> </column> <column width="200" order="true"> <header value="Active Flag" hAlign="center" styleClass="header2"/> <item value="${activeFlag}" hAlign="left" pattern="$#,##0.00" styleClass="item2"/> </column> </columns> <footer show="true"/> <order imgAsc="/images/up.gif" imgDesc="/images/down.gif"/> </ui:dataGrid> </html:form> </body> </html:html> Kumar Thirunavukarasu/H Q/FHLMC To [EMAIL PROTECTED] 07/15/2005 cc 12:38 PM Subject RE: Newbie to Datagrid Taglib I saw your explanation about datagrid. I am trying to use this in my project as well. Where will I find some documentation about <ui:dataGrid items="${payupList}" var="Payup" name="Pay-up View" cellPadding="1" cellSpacing="0"> this particular element and attributes. I could not find in jakarta. I am getting the following error. in:../jsp/DataMaintenance/dataMaintSystemParamBody.jsp] Element type "item" must be followed by either attribute specifications, ">" or "/>".' javax.servlet.jsp.JspException: Element type "item" must be followed by either attribute specifications, ">" or "/>". at org.apache.taglibs.datagrid.DataGridTag.doAfterBody(DataGridTag.java:200) at jsp_servlet._jsp._datamaintenance.__datamaintsystemparambody._jspService(__d atamaintsystemparambody.java:30 0) at weblogic.servlet.jsp.JspBase.service(JspBase.java:33) at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(Servle tStubImpl.java:971) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java :402) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java :446) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java :305) at weblogic.servlet.internal.RequestDispatcherImpl.include(RequestDispatcherImp l.java:607) at weblogic.servlet.internal.RequestDispatcherImpl.include(RequestDispatcherImp l.java:400) at weblogic.servlet.jsp.PageContextImpl.include(PageContextImpl.java:154) at org.apache.struts.tiles.TilesUtilImpl.doInclude(TilesUtilImpl.java:137) at org.apache.struts.tiles.TilesUtil.doInclude(TilesUtil.java:177) at org.apache.struts.taglib.tiles.InsertTag.doInclude(InsertTag.java:756) at org.apache.struts.taglib.tiles.InsertTag$InsertHandler.doEndTag(InsertTag.ja va:881) at org.apache.struts.taglib.tiles.InsertTag.doEndTag(InsertTag.java:473) at jsp_servlet._jsp.__basictemplate._jspService(__basictemplate.java:237) at weblogic.servlet.jsp.JspBase.service(JspBase.java:33) at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(Servle tStubImpl.java:971) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java :402) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java :446) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java :305) at weblogic.servlet.internal.RequestDispatcherImpl.include(RequestDispatcherImp l.java:607) at weblogic.servlet.internal.RequestDispatcherImpl.include(RequestDispatcherImp l.java:400) at weblogic.servlet.jsp.PageContextImpl.include(PageContextImpl.java:154) at org.apache.struts.tiles.TilesUtilImpl.doInclude(TilesUtilImpl.java:137) at org.apache.struts.tiles.TilesUtil.doInclude(TilesUtil.java:177) at org.apache.struts.taglib.tiles.InsertTag.doInclude(InsertTag.java:756) at org.apache.struts.taglib.tiles.InsertTag$InsertHandler.doEndTag(InsertTag.ja va:881) at org.apache.struts.taglib.tiles.InsertTag.doEndTag(InsertTag.java:473) at jsp_servlet._jsp._datamaintenance.__datamaintsystemparammain._jspService(__d atamaintsystemparammain.java:23 9) at weblogic.servlet.jsp.JspBase.service(JspBase.java:33) at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(Servle tStubImpl.java:971) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java :402) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java :446) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java :305) at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImp l.java:301) at org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:10 69) at org.apache.struts.tiles.TilesRequestProcessor.doForward(TilesRequestProcesso r.java:274) at org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProces sor.java:455) at org.apache.struts.tiles.TilesRequestProcessor.processForwardConfig(TilesRequ estProcessor.java:320) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:279) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482) at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525) at javax.servlet.http.HttpServlet.service(HttpServlet.java:760) at javax.servlet.http.HttpServlet.service(HttpServlet.java:853) at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(Servle tStubImpl.java:971) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java :402) at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java :305) at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(W ebAppServletContext.java:6350) at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubjec t.java:317) at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:118) at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletCo ntext.java:3635) at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java :2585) at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:197) at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:170) 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