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How to create in-page configuration. Via c:set?

Answer 1

A:

Seam is a Model-View-Controller (MVC) framework. The view is implemented using JSF pages. Configuration is part of the model and should not be put in pages.

To implemented proper layering I suggest you put your configuration in some kind of globally accessible bean (instantiated by Seam, probably populated from a .properties file) which you reference in your JSF pages.

Kees de Kooter 2009-06-08 06:00:45

Answer 2

A:

I don't know how much refactoring would be involved but you could create a configuration bean which would be scoped appropriately, then use the c:set tags to set your configuration bean. Then, later on in your page, you can use the configuration bean rather than directly accessing the variables.

Drew 2009-06-08 15:17:44

Answer 3

A:

Assuming you can use facelets, for the c:set issue:

In your template:

...
<html ...
    xmlns:ui="http://java.sun.com/jsf/facelets"
...
<body>
    <ui:param name="testParam" value="Test" />

    <ui:insert name="test">
    </ui:insert>
...

In this case the value of the ui:param can be used as a variable to be used in pages using the template.

Pages using template:

...
<html ...
    xmlns:ui="http://java.sun.com/jsf/facelets"
...
<body>
<ui:composition template="/WEB-INF/templates/template.xhtml">
    <ui:define name="test">
<h:outputText value="#{testParam}" />
...

With that said, I can think of a very few instances where this should actually be used. Unless your hands are tied, values should come from application/session scoped beans.

Edit:

I apologize for not double checking earlier, as I was extremely busy and used the first answer that came to mind, however, I verified using a c:set in place of the ui:param would work equally as well using the previous defined set up. So, in the template, you could have instead of . This would mean you would also have to include xmlns:c="http://java.sun.com/jstl/core", which I am sure you already have.

codeape 2010-02-17 22:45:54

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How to create in-page configuration. Via c:set?

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