URL Friendly Links

[trippccn]

I'm trying to use GET request variables instead of the POST method that commandLink uses. I have the following code:

<h:commandLink value="#{user.name}" action="#{UserSelect.select}">
<f:param name="id" value="#{user.id}"/>
</h:commandLink>

Which outputs a javascript enabled link with # at the end. But I want links with ?id=1 or ?id=2, etc.

Is there any way to use GET links (without the javascript) that still call the UserSelect.select() method?

Thanks,
Chad

[trippccn]

My bad I jumped the gun... can someone just point me to the FAQ on this subject? I couldn't find it in the Wiki.

chad

[mirko27]

<h:outputlink>
<f:param../>
</h:outputlink/> ?

[gavin.king]

Or, with Seam CVS, try:

<s:link value="#{user.name}" action="#{UserSelect.select}">
 <f:param name="id" value="#{user.id}"/>
</s:link>

I plan to add a whole new page to the Seam refdoc about this....

[trippccn]

Ok so I got it to work with @Factory, but I can only link back to the same page. Is there a way to link to another JSP page and still access the outjected variable?

[mirko27]

s:link element has parameters. It seems to me that default just creates new conversation. You can use
<s:link propgragation="join"/>.
I think this should work.

[gavin.king]

"TrippCCN" wrote:

Ok so I got it to work with @Factory, but I can only link back to the same page. Is there a way to link to another JSP page and still access the outjected variable?

<s:link view-id="/nextPage.xhtml"
 action="#{myAction.method}"
 value="Button Label"
 propagation="true"/>

Note that you have a choice:

* specify view-id, and write a void action method
* don't specify view-id and return an outcome from the action method
* specify view-id, and return null from the action method if you want that view-id to be rendered, or some other outcome if you want a different view-id

Pretty flexible :-)

[d1g]

Hi. This new Seam link tag solves a few problems I had. Thanks! There is one thing missing from my point of view though. I would like to specify custom urls with this tag.

I have been using url rewriting (in and out) to make make friendly URLs for our Seam based application. E.g /myfolder/something/ gets rewritten to /thing.seam?a=myfolder&b=something.

Would it be possible to add a new attribute to the link tag that enables me to override the detected URL? How about 'link' as the attribute. Here is an example:

<s:link value="view" link="#{mycomponent.niceUrl}"/>

We would still be able to use all the other attributes. To prove that this works I coded a change to your HtmlLink class. Here is the segment prior to my change:

 String url = context.getApplication().getViewHandler().getActionURL(context, viewId);
 String encodedUrl = context.getExternalContext().encodeActionURL(url)

And this is my version:

String encodedUrl = null;
 ValueBinding linkValueBinding = getValueBinding("link");
 if (linkValueBinding != null) {
 // link from expression
 encodedUrl = linkValueBinding.getValue(context).toString();
 }
 if ((encodedUrl == null) && (link != null)) {
 // plain text links
 encodedUrl = link;
 }
 if (encodedUrl == null) {
 // just get url from context
 String url = context.getApplication().getViewHandler().getActionURL(context, viewId);
 encodedUrl = context.getExternalContext().encodeActionURL(url);
 }

Clearly I had to do all the extra stuff to add in the 'link' attribute to the tag.

This change works perfectly for me. There may be a better way to do this and I'm not fully up-to-speed on the JSF API. I should probably have encoded the URL and there may be other problems...

Anyway, over to you. Is it possible to add in this functionality? Many thanks.

[gavin.king]

Add a feature request to JIRA, with a bit more details about how I should go about implementing this.

[trippccn]

How do I get the s:link tag to work? I downloaded the nightly build, copied over jboss-seam.jar, and added

<%@ taglib uri="http://jboss.com/products/seam/taglib" prefix="s" %>

But I'm sure I'm missing something... i get the error:

taglib cannot be resolved in either web.xml or the jar files deployed with this application

I've never used a nightly build, what am I missing?

Thanks, Chad

[lcoetzee]

You also need the jboss-seam-ui.jar (which also gets compiled when you build seam from CVS). This jar needs to be packaged in you WAR.

L

[trippccn]

I compiled from CVS and overwrote the old jboss-seam-ui.jar and still the same error.

17:16:09,328 ERROR [[jsp]] Servlet.service() for servlet jsp threw exception
org.apache.jasper.JasperException: /charities/find.jsp(1,1) The absolute uri: http://jboss.com/products/seam/taglib cannot be resolved in either web.xml or the jar files deployed with this application