in fact, you would use the alias bean like this: <t:panel> <f:facet name="layout"><t:gridLayout ... ></f:facet>
<t:aliasBean alias="#{foo}" value="#{foo1}" > <beans:foo /> </t:aliasBean> <t:aliasBean alias="#{foo}" value="#{foo2}" > <beans:foo /> </t:aliasBean> </t:panel> but in any case, you are right, the JSF expression is not there any more when you close the t:panel tag. regards, Martin On 8/26/05, Udo Schnurpfeil <[EMAIL PROTECTED]> wrote: > Hmmm, I worry about this will not solve my problem. > > I understand the t:aliasBean to use like this: > > page.jsp begin ------------------------------ > > <t:aliasBean alias="#{foo}" value="#{foo1}" /> > <beans:foo /> > > <t:aliasBean alias="#{foo}" value="#{foo2}" /> > <beans:foo /> > > page.jsp end ------------------------------ > > and use <h:inputText value="#{foo.firstName}" /> in the custom tag. > > So far, so good. > But, I want to use, of course, the tobago layout manager for layouting: > > <t:panel> > <f:facet name="layout"><t:gridLayout ... ></f:facet> > > <t:aliasBean alias="#{foo}" value="#{foo1}" /> > <beans:foo /> > > <t:aliasBean alias="#{foo}" value="#{foo2}" /> > <beans:foo /> > </t:panel> > > The layout manager has to know all of its containers children to make an > appropriate layout. So the panel has rendersChilden=true, and all the > tags will be parsed before rendering. > > In the moment where #{foo.firstname} will be evaluated by the renderer > (2 times), the value of #{foo} equals #{foo2}, because it will be done > at the end tag of the panel (</t:panel>). > > > regards > > Udo > > > Martin Marinschek wrote: > > > Well, there is a way in MyFaces to do so. > > > > check out the t:aliasBean! > > > > regards, > > > > Martin > > > > On 8/26/05, Udo Schnurpfeil <[EMAIL PROTECTED]> wrote: > > > >>>* The fact that you can use a value binding expression on nearly > >>> every attribute makes using rt expressions redundant ... you can > >>> do anything you need with a value binding anyway. > >> > >>A very powerful feature in JSP 2.0 are "Custom Tags". > >> > >>Having a bean Foo in your application with several instances. > >>Now you write some code to edit this bean. If you put this code > >>into a custom tag like > >> > >>WEB-INF/tags/beans/foo.tag begin ------------------------------ > >> > >><%@ attribute name="bean" %> > >><h:outputLabel value="here comes my bean: " /> > >><h:inputText value="#{${bean}.firstName}" /> > >><h:inputText value="#{${bean}.secondName}" /> > >> > >>foo.tag end -------------------------------- > >> > >>you can use this snip many times on your jsp like > >> > >>page.jsp begin ------------------------------ > >> > >><%@ taglib tagdir="/WEB-INF/tags/beans" prefix="beans" %> > >><beans:foo bean="foo1" /> > >><beans:foo bean="foo2" /> > >><beans:foo bean="foo3" /> > >> > >>page.jsp end -------------------------------- > >> > >>Unfortunately this does not work. Because of the rtexpression=false. > >> > >>In tobago we decided to enable the feature, to make such things work. > >> > >>Is there a way in JSF 1.2 / JSP 2.1 to make such sniplets run without > >>dublicating code? > >> > >>Udo > >> > >> > >>>In JSF 1.2 / JSP 2.1, the concepts are getting unified ... but in the > >>>mean time (when the JSP container doesn't know what a value binding > >>>expression is) this was the decision made at the JSF spec level. > >>> > >>> > >>>Craig > >>> > >> > >> > > > > > > -- > Dipl.-Math. Udo Schnurpfeil - Executive Officer - Atanion GmbH > Software Development - Bismarckstraße 13 - 26122 Oldenburg - Germany > phone +49 441 4082310 - mobile +49 174 9784746 - fax +49 441 4082333 > mailto:[EMAIL PROTECTED] - http://www.atanion.com > -- http://www.irian.at Your JSF powerhouse - JSF Trainings in English and German