I have a strange problem with the pagelink component. I am trying to navigate
from the start page to the ViewPhoto page but I get an exception:
[ERROR] RequestExceptionHandler Processing of request failed withuncaught
exception: Exception in
methodcom.thc.web.pages.ViewPhoto.onActivate(java.lang.Long)
(atViewPhoto.java:18), parameter #1: Coercion of images to typejava.lang.Long
(via String --> Long) failed: For input string:"images"
org.apache.tapestry.runtime.ComponentEventException: Exception inmethod
com.thc.web.pages.ViewPhoto.onActivate(java.lang.Long) (atViewPhoto.java:18),
parameter #1: Coercion of images to typejava.lang.Long (via String --> Long)
failed: For input string:"images"
at
org.apache.tapestry.internal.structure.ComponentPageElementImpl.triggerContextEvent(ComponentPageElementImpl.java:1021)
...
and
[ERROR] RequestExceptionHandler Processing of request failed withuncaught
exception: Exception in
methodcom.thc.web.pages.ViewPhoto.onActivate(java.lang.Long)
(atViewPhoto.java:18), parameter #1: Coercion of styles to typejava.lang.Long
(via String --> Long) failed: For input string:"styles"
org.apache.tapestry.runtime.ComponentEventException: Exception inmethod
com.thc.web.pages.ViewPhoto.onActivate(java.lang.Long) (atViewPhoto.java:18),
parameter #1: Coercion of styles to typejava.lang.Long (via String --> Long)
failed: For input string:"styles"
at
org.apache.tapestry.internal.structure.ComponentPageElementImpl.triggerContextEvent(ComponentPageElementImpl.java:1021
I think it's because tapestry is interpreting the ref to styles/style and
images/x.jpg (in layout.tml) as params to the onActivate method. Do I have to
use a special tapestry tag for any hrefs in my templates? The page renders
without any problems if I leave out the onActivate method.
Here's the relevant code
Start.tml:
<t:pagelink page="viewPhoto" context="currentPhoto.id">
<img alt="#" src="${currentPhoto.imageResource.resource}" width="64"height="64"
/>
</t:pagelink>
ViewPhoto.java:
package com.thc.web.pages;
...
public class ViewPhoto {
private Photo photo;
@Inject
private PhotoDao photoDao;
private Long imageId;
void onActivate(Long imageId) {
this.imageId = imageId;
photo = photoDao.findImageById(imageId);
}
Long onPassivate() { return imageId }
public Photo getPhoto() {
return photo;
}
public void setPhoto(Photo photo) {
this.photo = photo;
}
}
layout.tml
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd";>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Blotterpad</title>
<link href="styles/style.css" rel="stylesheet" type="text/css" />
</head>
<body>
<form action="#">
<div id="container">
<div id="header">
<t:pagelink page="start"><img alt="#" src="images/art_Logo.gif" width="269"
height="92" /></t:pagelink></div>
<div id="login"><a href="#"><img alt="#" src="images/btn_home.jpg" width="11"
height="10" /></a> | <a href="#"><img alt="#" src="images/btn_contact.jpg"
width="11" height="8" /></a></div>
<div class="clear"></div>
<div id="navcontainer">
<div style="float:right;"><img alt="#" src="images/art_navbg_right.jpg"
width="6" height="31" /></div>
<div class="menutop">
<ul id="cssdropdown">
<li class="mainitems"><a t:type="pagelink" page="Start"
href="#">Home</a></li>
<li class="mainitems"><a t:type="pagelink" page="MyPhotos"
href="#">My Photos</a></li>
<li class="mainitems"><a t:type="pagelink" page="MyEditions"
href="#">My Artwork</a></li>
<li class="mainitems"><a t:type="pagelink" page="MyFavourites"
href="#">My Favorites</a></li>
<li class="mainitems"><a t:type="pagelink" page="Search"
href="#">Search</a></li>
<li class="mainitems"><a t:type="pagelink" page="MyAccount"
href="#">MyAccount</a></li>
</ul>
</div>
</div>
<!-- content here -->
<t:body />
<div class="clear"></div>
<div class="clear"></div>
<div id="footer">
<div id="navcontainer2">
<ul id="navlist">
<li><a href="#">Home</a></li>
<li><a href="#">Registration</a></li>
<li><a href="#">My Galleries</a></li>
<li><a href="#">My Favourites</a></li>
<li><a href="#">My Editions</a></li>
<li><a href="#">My Account</a></li>
<li><a href="#">View photo</a></li>
<li style="border:0px!important;"><a href="#">Contact Us</a></li>
</ul>
</div>
<p style="padding:10px 0px;"><strong>Blotterpad</strong> 2007.All Rights
reserved</p>
</div>
</div>
</form>
</body>
</html>
The start page generates a link in the form http://myapp/viewphoto/1 as I would
expect but when i click on the link i get the exception
Thanks!
