These are just guesses, I haven't tried them nor verified them.
I could imagine that the parameter isn't available via the WebRequest
because the page didn't get called by a GET request directly but with
the help of the service encoder, so your parameter isn't there anymore
when the page get's rendered. Try to get hold of the IRequestCycle by
calling getRequestCycle() and call getParameter on it. I wouldn't be
surprised if it's in there.
Cheers,
Uli
Kaspar Fischer schrieb:
Unfortunately, my solution does not really work yet. My page
uses
@InjectObject("infrastructure:request")
public abstract WebRequest getRequest();
public void pageBeginRender(PageEvent event)
{
super.pageBeginRender(event);
WebRequest request = getRequest();
id = request.getParameterValue("id")); // (*)
}
to read the Id of the page to display. This indeed works:
http://localhost/app?id=someid
results in id from (*) being set to "someid".
I now wanted to support friendly URLs and wrote a ServiceEncoder
whose decode() method extracts the Id form a URL like
http://localhost/node/id.html
and sets it:
public void decode(ServiceEncoding encoding)
{
// ...
String id = // ...
encoding.setParameterValue(ServiceConstants.SERVICE,
Tapestry.PAGE_SERVICE);
encoding.setParameterValue(ServiceConstants.PAGE, _className);
encoding.setParameterValue("id", id);
}
But although the variable encoding contains the parameter "id"
with its value (I verifed this), the page's pageBeginRender() from
above receives null.
I feel I misunderstand something here. Why are parameters not
passed on to the page request?
Many thanks,
Kaspar
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