Hi everyone,
I have a tricky binding problem here. It is a bit long winded, so please bear
with me. I have component called EntityList which takes a parameter called
viewListener as like so:
<parameter name="viewListener"
direction="in"
required="no"
type="org.apache.tapestry.IActionListener" >
<description>
This is the listener that should be triggered when clicking the
link for viewing a particular item
</description>
</parameter>
and then I use it in a direct link like so:
<component id="directView" type="DirectLink">
<binding name="listener" expression="viewListener"/>
<binding name="parameters" expression="currentItem.id"/>
</component>
I have many pages which use entity list, passing in a listener from the page to
the viewListener binding of the EntityList.
However I am having problems when I need to pass the listener from a page to a
component and finally to the EntityList. In this case I have a Customer page
which passes the listener to the PartyList component. The PartyList's param spec
is as follows:
<parameter name="viewListener"
direction="in"
required="yes"
type="org.apache.tapestry.IActionListener" />
And the PartyList in turn passes that listener to its EntityList:
<component id="entityList" type="EntityList">
...
<binding name="viewListener" expression="viewListener"/>
...
</component>
But when the directView link is clicked, I get the following:
Value for parameter 'listener' in component
owner/customerList/partyList.entityList.$DirectLink is null,
and a non-null value is required.
Now I know for a fact that the listener wasn't null before, because I did an
@Insert on "ognl:viewListener" to make sure.
The question is why is my viewListener null when I do a directView?
Thanks in advance for your help,
Bobby
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