Forum OpenACS Development: can use variable ::template::head::links ?

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1: can use variable ::template::head::links ?
Posted by Michael Cordova on 07/18/09 11:28 PM
I'm trying to read all the css files added into a page, so that I can generate a list with all css involved in creating that page.

Looking how template::head::prepare_multirows does it, I'm using variable ::template::head::links, but it seems to return an empty array.

Can I use that variable, or any other method?

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2: Re: can use variable ::template::head::links ? (response to 1)
Posted by Dave Bauer on 07/20/09 03:47 AM
Hmmm. yes you should be able to access it. The question is whether this array is populated when you are looking for it.
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3: Re: can use variable ::template::head::links ? (response to 1)
Posted by Michael Cordova on 07/20/09 01:39 PM
I have found 2 issues in head-procs.tcl:

  1. links content is deleted after being used, as a trick, in order not to use them later... :

    line 479: set links($name) ""

    ...

    line 488: if {$links($name) ne ""} {

    "later" means the next block where only alternate stylesheets are processed

    I think it's more clear to change the second if from this:

    if {$links($name) ne ""} {
    to this:
    if {$links($name) eq "alternate stylesheet"} {

  2. The array links is removed at the end of the script

    line 501: unset links

I have changed that lines in my code, and now I can access to ::template::head::links.

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4: Re: can use variable ::template::head::links ? (response to 1)
Posted by Dave Bauer on 07/20/09 04:57 PM
Ok, we HAVE to delete the namespace variables or you will be weird bugs.

I am not sure what you are trying to accomplish to reuse those variables. Perhaps you code should run before the multirow call?

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5: Re: can use variable ::template::head::links ? (response to 1)
Posted by Michael Cordova on 07/21/09 01:38 AM
What I can to do is activate the CSS button of the developer support toolbar. I use a lot this toolbar, and I work a lot with CSS. So, I find very useful this button for development stages.