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Mr.Eddart
Mr.Eddart

Reputation: 10273

Basic JSF: is it possible to SET a property value in EL?

I need to do something like this:

<a4j:support even="onclick" action="#{myBean.myProperty = null}"/>

I would like to know if this is possible and which would be the proper syntax if so.

Upvotes: 1

Views: 3982

Answers (2)

BalusC
BalusC

Reputation: 1108922

If you're running an EL 2.2 capable container (Tomcat 7, Glassfish 3, JBoss AS 6, etc and newer, with a web.xml declared conform at least Servlet 3.0), or are using JBoss EL (your seam tag suggests that you are using it...), then you should be able to invoke methods with arguments in EL:

<a4j:support event="onclick" action="#{myBean.setMyProperty(null)}"/>

An alternative is using <f:setPropertyActionListener>, this is supported in JSF 1.2 as well:

<a4j:support event="onclick" />
<f:setPropertyActionListener target="#{myBean.myProperty}" value="#{null}" />

Upvotes: 2

Ross
Ross

Reputation: 3008

Bean setter methods are called on form submission but based on your example why not do something like:

<a4j:support event="onclick" action="#{myBean.resetMyProperty}"/>

And in your bean your resetMyProperty method would set the myProperty to null

Upvotes: 1

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