Hi Brian,
This is a case of "static structure, dynamic behavior". Tapestry needs to know
the mixin at page/component creation time, rather than at runtime.
This "early binding", if you will, let's tapestry do a lot of optimizations and
enables behavior that would be otherwise cost-prohibitive (eg: I can't think of
a reasonable way to implement @BindParameter if runtime-mixin selection was
allowed).
Here's a potential workaround:
<t:block id="fee">
<t:label t:for="residentFeeInquiryWithFeeMixin"/>
<t:select t:id="residentFeeInquiryWithFeeMixin"
t:mixins="feefromresidentupdater" clientId="residentFeeInquiry" .../>
</t:block>
<t:block id="singlesource">
<t:label t:for="residentFeeInquiryWithSSMixin"/>
<t:select t:id="residentFeeInquiryWithSSMixin"
t:mixins="singlesourceformfieldupdater" clientId="residentFeeInquiry" .../>
</t:block>
<t:delegate to="prop:mixinBlock"/>
.java:
@Inject
private Block fee;
private Block singlesource;
public Block getMixinBlock() {
if (getContainer() instanceof SendMoneyTransfer)
return fee;
return singlesource;
}
HTH,
Robert
On Mar 9, 2012, at 3/910:00 AM , Brian Long wrote:
> Hi all,
>
> have a problem that seems easy to resolve but I'm making hard work of
> it, was hoping someone here can help me out. I have a simple component
> I want to use on different pages in my application, and there's a
> mixin associated with the select component in this simple component,
> but I want to use a different mixin depending on which type of page
> the component is located.
>
> so I have in my component.tml
>
> <t:label t:for="residentFeeInquiry" id="resident-label"/>
> <t:select t:id="residentFeeInquiry"
> t:validate="required" t:value="residentFeeInquiry"
> t:model="senderHasIdSelectModel" t:encoder="senderHasIdValueEncoder"
> t:mixins="mixin"
> t:blankOption="always"
> t:blankLabel="message:PLEASE_SELECT" t:label="message:RESIDENT"
> tabindex="${getResidentTabIndex()}"/>
>
> and in my component.java
>
> public String getMixin() {
> if (getContainer() instanceof SendMoneyTransfer) {
> return "feefromresidentupdater";
> }
> return "singlesourceformfieldupdater";
> }
>
> getting "Unable to resolve 'mixin' to a mixin class name". Have tried
> prop:mixin, ${mixin}, ${prop:mixin} etc. to no avail, would like to
> avoid having multiple select components with different mixins and an
> if else(s) if possible?
>
> Thanks for listening! Brian.
>
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