Can JSF's h: outputScript attribute be dynamic / how to inject Javascript into JSF from dynamic locations?
I am using com.sun.faces
version 2.1.18
. I am showing a list of questions and for some questions (based on the database id) I want to insert some dynamic Javascripts.
According to the attribute, it is of type: (must be evaluated before ). h:outputScript
name
javax.el.ValueExpression
java.lang.String
However, this code works for me:
<ui:repeat value="#{js.questionScripts[question.id]}" var="script">
<h:outputScript name="myScript.js" library="js" target="head"/>
</ui:repeat>
But this code is not:
<ui:repeat value="#{js.questionScripts[question.id]}" var="script">
<h:outputScript name="#{script}" library="js" target="head"/>
</ui:repeat>
#{question}
comes from the environment of <ui:repeat>
iterating over the list of questions.
I added an output to see if it was not #{script}
empty but contained the correct resource name.
Any ideas on how to solve this problem or implement an alternative?
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<h:outputScript>
must be created at build time to be recognized by JSF resource management. <ui:repeat>
runs while the render is being viewed and is therefore too late. You must use <c:forEach>
. I'm not sure how it worked for you, but it works great for me, provided it #{js}
is a request, session, or bean-scoped application, the property is questionScripts
already provisioned at the time of its (post) build and that #{question.id}
is available at build time.
<c:forEach items="#{js.questionScripts[question.id]}" var="script">
<h:outputScript name="js/#{script}" target="head"/>
</c:forEach>
(note that you must use an attribute items
instead of an attribute value
, and also note that I have corrected the seemingly incorrect use of the attributelibrary
).
See also:
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