Re: [Mason] Manipulate the cache of another component

Thank you for the kindly help on IRC :)

I consider that using HTML::Mason::Tools::compress_path() and comp_id()
is an internal implmentation technical used by HTML::Mason::Request::cache,
which might be subject to change and should not be exposed
to the component authors.
So I would like to see the Request class providing a public way to get
the cache object of another component.


I can't tell the difference between the two expressions.
Is there any chance that the results of them are different?

$options{namespace} ||= compress_path(
($options{comp} || $self->current_comp)->comp_id);

$options{namespace} ||= compress_path(
($options{comp}->comp_id || $self->current_comp)->comp_id);


Thanks.

Luoh Ren-Shan


Gareth Kirwan wrote:

>Didn't we do this yesterday ?
>
>Did:
>$m->cache( namespace => HTML::Mason::Tools::compress_path(
>$m->fetch_comp('/path/of/A')->comp_id ) )->clear
>
>Not work ?
>
>And I think you want:
>
>$options{namespace} ||= compress_path( ($options{comp}->comp_id ||
>$self->current_comp)->comp_id);
>
>for what you were suggesting :o)
>
>Personally I'd not alter the mason source. Subclass or something, but don't
>go creating that kind of maintainance issue.
>
>If you're only doing this once, then I'd go with the long winded line I
>first pasted.
>
>HTH.
>
>Gareth ( gbjk )
>
>  
>
>>-----Original Message-----
>>From: mas...@li... 
>>[mailto:mas...@li...] On Behalf Of 
>>Luoh Ren-Shan
>>Sent: 18 May 2004 11:42
>>To: mas...@li...
>>Subject: [Mason] Manipulate the cache of another component
>>
>>
>>Hi all,
>>
>>I have two component dealing with a same concept, say, users. 
>>Component A will display the users list, and component B will 
>>add an user. If I use $m->cache_self() in component A, is it 
>>possible for component B to invalidate the cache of A while 
>>adding a new user?
>>
>>I hope one line of sub HTML::Mason::Request::cache can be 
>>modified from
>>   $options{namespace}   ||= 
>>compress_path($self->current_comp->comp_id);
>>to
>>   $options{namespace}   ||= compress_path(($options{comp} || 
>>$self->current_comp)->comp_id);
>>
>>such that component B can use
>>   $m->cache(comp => $m->fetch_comp("/path/of/A"))->clear;
>>
>>to clear the cache of component A.
>>
>>
>>Any ideas?
>>
>>Thanks.
>>
>>Luoh Ren-Shan
>>
>>
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>>
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