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copied!<blockquote> <p>If you are not submitting a form by going from one page to the next, then what are you doing?</p> </blockquote> <p>Navigating to another page without submitting any form fields.</p> <blockquote> <p>My app involves entering information in a form, hitting a button and then going to a new page that displays results after running a query. It seems I have seen this activity take place with s:button</p> </blockquote> <p>s:button won't submit the form, so the values on your page will not be applied to the model. You must use a commandButton/Link for this. The activity you may have seen is passing an already populated value to another page. </p> <h2>f:param</h2> <p>Used more often with s:button/link as these are often used for navigation. You can use f:param to pass an already populated value across to another page. h:commandButton/Link is used for submitting forms so the values are in form fields. Of course there is nothing stopping you from using f:param for this to.</p> <h2>page.xml</h2> <p>the params used here are for applying request parameters to the model and vice versa. </p> <h2>@RequestParameter</h2> <p>Can be used in conjunction with all of the above but is a little pointless when used with page.xml params as they can be used to do the same job</p> <h2>Example</h2> <p>If you start with this page: </p> <pre><code>http://mydomain.com/myapp/home.seam?name=damo </code></pre> <p>And the home.page.xml has:</p> <pre><code><param name="name" value="#{person.name}"/> </code></pre> <p>Then when the page is loaded <code>person.setName("damo")</code> will be called as there is a matching request parameter in the URL.</p> <p>You can store the value of the param in the link to the next page:</p> <pre><code><s:link value="Go to Page 2" view="/page2.xhtml"> <f:param name="name" value="#{person.name}"/> </s:link> </code></pre> <p>When you click the link and navigate to <a href="http://mydomain.com/myapp/page2.seam" rel="noreferrer">http://mydomain.com/myapp/page2.seam</a> And the page2.page.xml has:</p> <pre><code><param name="name" value="#{someOtherBean.name}"/> </code></pre> <p>Then <code>someOtherBean.setName("damo")</code> will be called.</p> <p>Page2 may have a s:button like this:</p> <pre><code><s:button value="Say Hello" action="#{someOtherBean.sayHello}"> <f:param name="subject" value="#{someOtherBean.name}"/> </s:button> </code></pre> <p>And the method could be:</p> <pre><code>@Name("someOtherBean") public class SomeOtherBean { @RequestParameter("subject") //same value as the 'name' in f:param private String subject; public void sayHello() { System.out.println("Hello "+subject); } } </code></pre> <p>Hope this helps!</p>

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