Using c:forEach with Seam, JSF, and Facelets

After a couple of hours of scratching my head and Googling the Interwebs like a mad man I finally figured out why my c:forEach wasn’t iterating and displaying the data in my view. Come to find out I was using the wrong name space when declaring the JSTL core library.

First off here is the c:forEach code.

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<c:forEach items="#{item.tags}" var="tag">
  <h:outputText value="#{tag.name}"/>
  <br/>
</c:forEach>

Here is the incorrect name space causing the issues. Notice the word jsp in the path.

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xmlns:c="http://java.sun.com/jsp/jstl/core"

Now for the correct name space. Just remove the word jsp from the path.

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xmlns:c="http://java.sun.com/jstl/core"

Bingo. Now everything is working. Don’t make same boneheaded mistake.



Using jQuery with Seam

If you are using RichFaces with your Seam application then jQuery is already there and ready to use. The only thing to remember is to use jQuery() function to refer to jQuery rather than using $(). $() is used to refer to prototype.js functions which RichFaces uses heavily.

Below is an example you can use to test jQuery. This should pop up a box on your page.

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<script type="text/javascript" >
  jQuery(document).ready(function() {
      alert("hello seam: " + jQuery(window).height());
  });
</script >

For more information on jQuery and RichFaces check out the RichFaces Live Demo page.