On Jun 2, 2005, at 3:33 AM, Peter Veentjer - Anchor Men wrote:
I have been looking for an example how to use query parameters with
the ExternalLink. I know the ExternalLink can have a array of
parameters.. and it can access the request context to catch the
query parameters. But is there no way to fill in those query
parameters on the Page properties?
so a foo?firstname=peter
would be set to:
abstract class PersonPage{
abstract String getFirstname();
abstract void setFirstname(String firstname);
}
And why does the externallink have an array of parameters? If the
link is external the array with properties could never be set from
the outside.
ExternalLink will take in parameters from the URL that look like
&sp=Sfoo&sp=Sbar.... and use the "sp" parameters in order in that
array after unsqueezing the data (the "S" prefix means its a String).
I personally find this awkward. A custom link and service
combination can make things cleaner in the way you're proposing - in
fact I've done this very thing and posted about it here with a
ParamLink and ParamService (for Tapestry 4.0). I pass a Map in to a
listener filled with named parameters. It could also populate page
properties with some modifications - but that gets into a discussion
of whether some properties should not be alterable from the URL or not.
In summary - I agree that ExternalLink/Service are less than ideal
but there is flexibility to make it better.
Erik
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