A last question: How to do the same thing with the <display:*> tag in order to have additional features like auto-paging, auto-sorting, ...
I tried to modify the JSP page. I replaced <logic:iterate id="itemBeans" indexId="idx" name="orderForm" property="itemBeans" type="com.xyz.ItemBean"> <tr> <td><html:text name="itemBeans" property="id" indexed="true"/></td> <td><html:text name="itemBeans" property="name" size="50" indexed="true"/></td> <td><html:text name="itemBeans" property="price" indexed="true"/></td> </tr> </logic:iterate> by the following code <display:table border="0" pagesize="3" cellspacing="0" cellpadding="0" name="orderForm" property="itemBeans" scope="request"> <display:column property="id" title="ID" /> <display:column property="service" title="Service"/> </display:table> but it doesn't work. Thanks a lot in advance. Sandra ---------------------------------------------------------------------------- As of February 12th, 2003 Thomson unifies its email addresses on a worldwide basis. Please note my new email address: [EMAIL PROTECTED] http://www.thomson.net/ ----Original Message----- From: Heligon Sandra Sent: 19 March 2003 12:39 To: Heligon Sandra Subject: RE: How define a DynaActionForm to display a collection ? As much for me I do not have any more an error I did not point on the good JSP page. Thank you very much for your help. Sandra -----Original Message----- From: Heligon Sandra Sent: 19 March 2003 10:49 To: 'Struts Users Mailing List' Cc: '[EMAIL PROTECTED]' Subject: RE: How define a DynaActionForm to display a collection ? Importance: High Thanks a lot for your example, it is exactly what I wish to do. The JSP code with the tag logic:iterate helped me much. I still have nevertheless a problem. When I run the application I have the error: [ServletException in: /pages/MyPage.jsp]I do not know how to iterate over 'class java.lang.String'.' It is probably the code of the action that populates the form that is bad. For your example I will write: public ActionForward executeAction(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception { Collection beans = new ArrayList(); ItemBean bean1 = new ItemBean(); beans.add(bean1); bean1.setId(1); bean1.setName("Toto"); ItemBean bean2 = new ItemBean(); beans.add(bean2); bean1.setId(2); bean1.setName("Tata"); // Populate the form from the business data values BeanUtils.copyProperties(form,beans); } The action that populates the form is not the action view2Submit.do. The action view2Submit.do process the form, isn't it ? Thanks a lot in advance for your help. Sandra -----Original Message----- From: harish krishnaswamy [mailto:[EMAIL PROTECTED] Sent: 18 March 2003 19:30 To: Struts Users Mailing List Subject: RE: How define a DynaActionForm to display a collection ? After spending quite sometime on the collection-backed form properties solution, I figured its worth mentioning the solution I dug out. I have to say that the documentation on this one is pretty sparse. Ok here we go... I have a jsp that needs to accept an order for items. This jsp has single-occurence fields like customer name and address and multi-occurence fields like item id, item name and item price. The later is the focus of this message. I have created a plain java bean for the multi-occurence fileds called ItemBean. public class ItemBean { public ItemBean() { } public void setId(int id) { this.id = id; } public int getId() { return this.itemId; } public void setName(String name) { this.name = name; } public String getName() { return this.name; } public void setPrice(double price) { this.price = price; } public double getPrice() { return this.price; } } I have created a DynaActionForm bean as follows: <form-bean name="orderForm" dynamic="true" type="org.apache.struts.action.DynaActionForm"> <form-property name="name" type="java.lang.String"/> <form-property name="address" type="java.lang.String"/> <form-property name="itemBeans" type="java.util.ArrayList"/> <form-property name="event" type="java.lang.String"/> </form-bean> And I have a jsp like shown below: <html:form action="view2Submit.do"> Name: <html:text property="name"/> Address: <html:text property="address"/> <table> <tr> <td>Id:</td> <td>Name:</td> <td>Price:</td> </tr> <logic:iterate id="itemBeans" indexId="idx" name="orderForm" property="itemBeans" type="com.xyz.ItemBean"> <tr> <td><html:text name="itemBeans" property="id" indexed="true"/></td> <td><html:text name="itemBeans" property="name" size="50" indexed="true"/></td> <td><html:text name="itemBeans" property="price" indexed="true"/></td> </tr> </logic:iterate> <tr> <td><html:submit value="Save" onclick="setSubmitEvent('saveActivity');"/> </td> <td><html:submit value="Add" onclick="setSubmitEvent('addActivityProperty');"/> </td> </tr> </table> <html:hidden property="event"/> </html:form> Notice that the values of "id" and "property" attributes of the <logic:iterate> tag are the same. This is what makes the name of the html text fields to evaluate to the right format, which is: itemBeans[n].id for the id field. This "itemBeans" is the name of the indexed-property in the form bean. The "event" field is used by DispatchAction. Hope this was helpful to atleast someone. -Harish Heligon Sandra <[EMAIL PROTECTED]> wrote: I have an other question if I use a sub-class of DynaValidatorForm and define the form-bean in the struts-config file with: dynamic="true" type="foo.bar.YourDyanForm"> How do I write my JSP page ? type="foo.bar.YourDyanForm"> Is this the good manners to make? ---------------------------------------------------------------------------- As of February 12th, 2003 Thomson unifies its email addresses on a worldwide basis. Please note my new email address: [EMAIL PROTECTED] http://www.thomson.net/ ----Original Message----- From: Heligon Sandra Sent: 18 March 2003 13:43 To: 'Struts Users Mailing List' Subject: RE: How define a DynaActionForm to display a collection ? Importance: High If I define a sub-class of DynaValidatorForm I just have to add two methods to access to the list parameter, isn't it ? public final class MyDynaForm extends DynaValidatorForm { private ArrayList list; public MyDynaForm () { list = new ArrayList(); ConfProp props = new ConfProp(); Vector v = props.getMeterHosts(); for (int i=0; i list.add(v.elementAt(i)); setList(list); } public ArrayList getList() { return list; } public void setList(ArrayList list) { this.list = list; } } I will wish to be certain that it is the best way to display a collection in DynaValidatorForm because I have a doubt in a message of the archives I read: The only reason you would ever need to create a real class that extends DynaActionForm or DynaValidatorForm would be if you need a custom reset() or validate() method. What do you think about it? -----Original Message----- From: Rick Reumann [mailto:[EMAIL PROTECTED] Sent: 11 March 2003 18:18 To: Struts Users Mailing List Subject: Re: How define a DynaActionForm to display a collection ? On Tue, 11 Mar 2003 17:36:09 +0100 Heligon Sandra wrote: > Has someone an example of struts-config.xml file and > a such SetUpAction with DynaActionForm and Collection ? In a form-bean declarations, where YourDyanForm is a subclass of a DynaActionForm(DynaValidatorForm): dynamic="true" type="foo.bar.YourDyanForm"> { snip } { snip } Then in you Action class... execute(..) { ArrayList someList = someBusinessClass.getMeListOfObjectsIneed(); formBean.set("myCollection" someList ); //forward to jsp page } The reason you'll want to subclass DynaActionForm is if you do some validation you probably will have to override the reset method. -- Rick Reumann --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------- Do you Yahoo!? Yahoo! Platinum - Watch CBS' NCAA March Madness, live on your desktop!
