Passing string parameter to a function or method from xhtml

el, jsf

Solution

You're not passing a `String`, instead an `ABC` variable that can't be understood by EL and your method will receive `null` value (thanks to BalusC for correct me). You should add apostrophes (') to tell the framework you're passing a `String`:

<p:commandButton type="button" rendered="#{myBean.checkPermission('ABC')}"
    value="Create" />

Problem

I have a button that I'd like to render based on whether a function returns true or false. The HTML: ``` <p:commandButton type="button" rendered="#{myBean.checkPermission(1)}" value="Create" /> ``` And the supporting bean: ``` public boolean checkPermission(String actionKey) { ... } ``` The problem is that when I call checkPermission with a numeric parameter like `#{myBean.checkPermission(1)}`, it works fine, but with I pass a String as a parameter, i.e. `#{myBean.checkPermission(ABC)}` , I get an empty string passed. Any idea why?

Original source