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iw_perl equivalent for iw_include?

JonathonG

Folks,

I have 2 presentation templates. The first presentation template (A) generates some output. The second presentation template (B) needs to pull this in. If I just want it pulled in at some point in my output, I can simply use the <iw_include> tag and all is well. However, within B I actually need to do some parsing of the output of A. So, I think, no problem. We'll just pull the results of A into a perl variable within an iw_perl section and make the necessary modifications. Then I went looking for the iw_perl function that is equivalent to <iw_include>. It seems to be non-existant (or I'm going blind). Now, I know that I could use the <iw_system> tag, call iwpt_compile.ipl directly, and pull the results in, but that seems rather kludgy (not to mention the performance hit of spinning up a secondary process/perl interpreter/etc.).

Anyone have any suggestions? Did I miss something in the docs? Or am I doomed to go the iwpt_compile route (or worse, duplicate A's logic in

?

Jonathon
Independent Interwoven Contractor

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iwovGraduate

I am not quite certain I understand what you are trying to do, but it seems that you need to pass some varaibles to a compontent PT ?
Do you call/use PT B from PT A ?

JonathonG

Hmm...let me try to supply some more details...Oh, and environment stuff that I forgot in the first post:

TeamSite/Templating 5.5.2, latest SPs.
Windows 2000

Basically, presentation template A generates XML for deployment so that our app server can read it. Within presentation template B, I need to put that same XML data into a hidden field on a form. In order to do this, I need to encode all <, >, &, ', and " symbols. I thought this would be a simple matter of iw_including the output of A, sticking that in a perl variable, running a substitution on that variable, and then using that variable in the output of B. So, B needs to generate some HTML which will contain some encoded XML. The source XML (pre-encoded) can be generated by calling A. I'm looking for something like the following:

<iw_perl>
my $var = iwpt_include('A.tpl', 'ptlocal);
$var =~ s| | |; # code to do replace of special characters
iwpt_output("$var");
</iw_perl>

The trouble is, there is no such function as iwpt_include, at least not that I can find.

Does that make more sense?

Jonathon
Independent Interwoven Contractor

iwovGraduate

Lets say you invoke presentation template B. In B, you can use iw_include to include presentation template A and pass some variable(s) to it. Based on that variable, PT A will output either HTML for whatever presentation template B is used for. If not, presentation template A would just output your usual XML for deployment.

Wouldn't that work ? or am I missing something ?

Adam Stoller

Are you trying to get the contents of A.tpl or the contents of a page *generated* from A.tpl (e.g. A.xml)?

If the latter, which is what I thought you were looking to do, just use something like:my $axmlfile = "path-to-xml-generated-from-A.tpl";
my $axml = '';
if (open(IN, "<$axmlfile")){
local $/;
$axml = ;
close(IN);
}
# do your encoding of the contents of $axml
...Or am I misunderstanding you?

--fish
Senior Consultant, Quotient Inc.
http://www.quotient-inc.com

JonathonG

Yeah, that's what I've just about decided I'm going to need to do. Its more (re-)work in template A, because A is already written to output XML. Now, I'll have to add logic to it to either encode the XML or not, depending on the variable passed in. Architecturally, I don't like that because A shouldn't have to know anything about B or what it needs. But, this won't be the first time I've had to use less than ideal architecture due to limitations in a tool...*sigh*

Jonathon
Independent Interwoven Contractor

JonathonG

The XML file may or may not be generated already (probably won't in most cases since B is the "preview" template). I am not trying to get the contents of A, nor of a file that was previously generated by A, but I want the results of running A against the current DCR. I would like the iw_perl function equivalent of:

my $a_out = `iwperl iwpt_compile.ipl -pt A.tpl -iw_pt-dcr SomeDCR`;

Is that more clear?

As I said in another post, it looks like I'm going to have to put logic in A.tpl that will switch out its behavior based on whether or not it is being called from B.tpl.

Jonathon
Independent Interwoven Contractor

Adam Stoller

Can you use an iwostream buffer?

--fish
Senior Consultant, Quotient Inc.
http://www.quotient-inc.com

JonathonG

I think that's got it, ghoti. Thanks a bunch. I was looking at the docs for the iw_perl tag, and didn't think to look at the iw_ostream tag. I've always thought of that tag as only being useful if you want to write out more than one output file. But, the "filter" attribute should do the trick nicely. I'll post a follow-up with the code I come up with, but its probably pretty trivial.

Jonathon
Independent Interwoven Contractor