[Seaside] Registering a WARequestHandler

[Udo Schneider]

I hit a similar problem when dealing with Files in Magritte/Seaside. I 
kind of (re-)implemented WAApplication>>#urlFor: in my own component 
based on WARegistry>>#urlFor: . Not quite sure if the code is "legal" - 
but it works:

My code in your example might look like this (not tested):

updateRoot: anHtmlRoot
  	| handler |
  	super updateRoot: anHtmlRoot.
  	handler := MySubclassOfWARequestHandler on: self.
         registry := self requestContext registry.
         url := registry url.
         key := registry register: handler.
	registry trackingStrategy addKey: key toUrl: url.
  	

Hope this helps.

CU,

Udo


On 31/01/17 21:47, Jupiter Jones wrote:
> I’m having an issue registering a handler in Seaside 3.2 that I’m hoping someone will recognise.
>
> In the test "WARegistryTest>>testUrlFor” a handler is registered with an instance of WARegistry by simply creating a WARegistry with "WARegistry new".
>
> In my app I’m doing something like this:
>
> updateRoot: anHtmlRoot
> 	| handler |
> 	super updateRoot: anHtmlRoot.
> 	handler := MySubclassOfWARequestHandler on: self.
> 	url := WACurrentRequestContext value registry
> 		register: handler;
> 		urlFor: handler.
>
> …however "WACurrentRequestContext value registry” answers my WAApplication instance, which overrides  #register: from WARegistry for registering sessions - not handlers.
>
> So…
>
> I tried copying the way WARegistry>>register: does the registration into my method:
>
> updateRoot: anHtmlRoot
> 	| handler |
> 	super updateRoot: anHtmlRoot.
> 	handler := MySubclassOfWARequestHandler on: self.
> 	anHtmlRoot application cache
> 	    store:
> 	      (handler
> 	        setParent: anHtmlRoot application;
> 	        yourself).
> 	url := WACurrentRequestContext value registry urlFor: handler.
>
> Which appears to store the handler in the application cache (instance of WABulkReapingCache).
>
> However, when I call "WACurrentRequestContext value registry urlFor: handler” it ends up calling “WABulkReapingCache(WAExpiringCache)>>keyAtValue:ifAbsent:” method which calls #shouldNotImplement
>
> Can anyone see what I’ve done wrong, or know how to register an application handler?
>
> Thanks in advance :)
>
> Cheers,
>
> J
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