RE: Why would disabled="..." not take a runtime expression? The d ocs say that it should...

[Davide Bruzzone <Da...@ngt.com>]

This was it exactly... Actually, upon further digging yesterday, I did
notice that when I got rid of the scope-related problem, the error was
complaining about a type mismatch (As you said, trying to stuff a String
into a boolean primitive. Sure enough, when I looken in BaseTagHandler.java,
disabled is a boolena primitive).

Thanks Martin...

Dave

> -----Original Message-----
> From: Davide Bruzzone [mailto:Davide.Bruzzone@ngt.com]
> Sent: Monday, November 11, 2002 2:36 PM
> To: Struts Users Mailing List
> Subject: Why would disabled="..." not take a runtime expression? The
> docs say that it should...
> 
> Greetings all...
> 
> I'm trying to control whether or not some form fields are 
> editable using a
> custom security tag. So, at the top of the page, I have 
> something like this:
> 
> <%-- Page security --%>
> <bean:define id="readOnly" type="java.lang.String" value="false"/>
> 			
> <ngt-security:hasNoPermission deny="deny">
> 	<bean:define id="readOnly" type="java.lang.String" 
> value="true"/>
> </ngt-security:hasNoPermission>
> 
> If the deny attribute is anything but null or an empty 
> string, readOnly is
> set to "true". Then I try to do this:
> 
> <html:select property="priority" styleClass="fullwidth" disabled="<%=
> readOnly %>">
> 	...
> </html:select>
> 
> What I get back is that the readOnly symbol cannot be 
> resolved...

The problem is that you are passing a String to an attribute that requires a
boolean. The documentation could certainly be more clear (you could submit a
Bugzilla item if you like), but you will note that it states *true* and not
*"true"* as an appropriate value.

If you want 'readOnly' to be a String, you'll have to use something like
this for the value of the 'disabled' attribute:

    <%= Boolean.valueof(readOnly).booleanValue() %>

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