html-template-users — Discussion of HTML::Template and related modules

[htmltmpl] HTML::Template Question

[Bryce P. <bp...@he...>]

Hello,

I have a subroutine which I use generically to call a bunch of different
templates, depending on which page was called in the query string. Now
my question is, is there a way to test if a template variable exists? I
tried doing something along the lines of:

if ($template->param('FOO_BAR')) { ... }

But that doesn't seem to work. It doesn't give any errors, but it does
not match properly. I did not know if maybe the underscore had something
to do with it or not. Any suggestions / comments would greatly be
appreciated.

Regards,
=20
Bryce Porter
Network Administrator
Heart Technologies, Inc.
Direct        309-634-2282
Fax           309-634-2382
=20

Re: [htmltmpl] Re: HTML::Pager and <SCRIPT> tag

[Martijn v. d. B. <Mar...@as...>]

> I looked at HTML::Pager and ran into the same standards compliance
> issues (months ago). Eventually, I found it was much simpler and more
> intuitive to use "Data::Page" and "Data::PageSet" to handle the
> paging.

Thanks for the tip, I'll check it out.
Meanwhile, I hacked my copy of H::P to create the proper JavaScript tag 
:)


-- 
</Martijn>
			'practice random acts of kindness
			and senseless acts of beauty'



-- 
The information contained in this communication and any attachments is confidential and may be privileged, and is for the sole use of the intended recipient(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please notify the sender immediately by replying to this message and destroy all copies of this message and any attachments. ASML is neither liable for the proper and complete transmission of the information contained in this communication, nor for any delay in its receipt.

[htmltmpl] Re: HTML::Pager and <SCRIPT> tag

[Mark S. <ma...@su...>]

On 2004-03-18, Martijn van den Burg <Mar...@as...> wrote:
> Hi,
>
> Since there's no list for HTML::Pager I thought I could get away with an 
> OT post in its companion module, H::T.
>
> H::P inserts the tag <SCRIPT LANGUAGE="Javascript"> at the position 
> where the template variable PAGER_JAVASCRIPT is inserted. My problem is 
> that this tag is not valid HTML 4.01 or XHTML, and hence my pages that 
> use H::P aren't, either.
>
> Proposed solution: change this tag into <script type="text/javascript"> 
> (lowercase chars).

I looked at HTML::Pager and ran into the same standards compliance
issues (months ago). Eventually, I found it was much simpler and more
intuitive to use "Data::Page" and "Data::PageSet" to handle the paging.

Because they don't generate /any/ HTML, you won't have these problems.
You can also easily build your navigation using the HTML::Template
API you are already used to.

After rolling my own, and trying HTML::Pager, I've been quite happy with
Data::Page and related modules for several projects. 

There is a bug report about the standards compliance issue here:
http://rt.cpan.org/NoAuth/Bug.html?id=2471

The bug report has been open for 11 months, and HTML::Pager appears that
it hasn't been updated for nearly 4 years.  

	Mark

-- 
http://mark.stosberg.com/ 

Re: [htmltmpl] Stumbled on bug with multiple tmpl_include tags on line

[Clifton R. <cli...@ti...>]

On Fri, Mar 19, 2004 at 01:11:04AM -0500, Cees Hek wrote:
> Clifton Royston wrote:
> >  OK, I think I have this worked out.  What was probably confusing us
> >both is the builtin fallback (IIRC) to trying some different paths,
> >including the current working dir, to load the templates from.  The
> >result is that if you are executing the script from the same relative
> >path to the included files, it seems to work. 
> 
> OK, I can confirm this as a bug now.  Thanks for doing the extra leg 
> work into narrowing down the problem!

  No sweat!

  Just so you know, it's not causing me any operational problems, as I
now follow the "htmlclean" pass with a Perl one-liner that adds a
newline before each tmpl_include.  However, fixing it in a future
release may save the next guy some problems.

  -- Clifton

-- 
          Clifton Royston  --  cli...@ti... 
         Tiki Technologies Lead Programmer/Software Architect
Did you ever fly a kite in bed?  Did you ever walk with ten cats on your head?
  Did you ever milk this kind of cow?  Well we can do it.  We know how.
If you never did, you should.  These things are fun, and fun is good.
                                                                 -- Dr. Seuss

Re: [htmltmpl] Stumbled on bug with multiple tmpl_include tags on line

[Cees H. <ce...@si...>]

Clifton Royston wrote:
>   OK, I think I have this worked out.  What was probably confusing us
> both is the builtin fallback (IIRC) to trying some different paths,
> including the current working dir, to load the templates from.  The
> result is that if you are executing the script from the same relative
> path to the included files, it seems to work. 

OK, I can confirm this as a bug now.  Thanks for doing the extra leg 
work into narrowing down the problem!

Cheers,

Cees

Re: [htmltmpl] Stumbled on bug with multiple tmpl_include tags on line

[Clifton R. <cli...@ti...>]

On Wed, Mar 17, 2004 at 11:45:42PM -0500, Cees Hek wrote:
> Hi Clifton,
> 
> I tried, but can't reproduce this problem.  Can you include a small code 
> sample with templates that actually displays this problem.
> 
> Also, it might help to tells us which version of HTML::Template and 
> which perl you are using (from the error message it looks like you are 
> using perl 5.6.1, but I can't guess what version of HTML::Template).
> 
> I tested using HTML::Template 2.6 and perl 5.8.3 and didn't see a problem.

  HTML::Template 2.6 and perl 5.6.1 (correct!) both built from the
FreeBSD ports system.  (Well, from our own CVS copy of the FreeBSD
ports tree, so that we have source control for absolute
reproducibility, but that's probably irrelevant.)

  -- Clifton

-- 
          Clifton Royston  --  cli...@ti... 
         Tiki Technologies Lead Programmer/Software Architect
Did you ever fly a kite in bed?  Did you ever walk with ten cats on your head?
  Did you ever milk this kind of cow?  Well we can do it.  We know how.
If you never did, you should.  These things are fun, and fun is good.
                                                                 -- Dr. Seuss

Re: [htmltmpl] Stumbled on bug with multiple tmpl_include tags on line

[Clifton R. <cli...@ti...>]

On Thu, Mar 18, 2004 at 09:15:25AM -1000, Clifton Royston wrote:
>   That must be a part of the problem.  Quite odd.  I am currently
> unable to reproduce it myself with a very simple script, so there's
> something about the broader execution environment going on here...
> 
>   I'll check back in once I have a script which reproduces it.  

  OK, I think I have this worked out.  What was probably confusing us
both is the builtin fallback (IIRC) to trying some different paths,
including the current working dir, to load the templates from.  The
result is that if you are executing the script from the same relative
path to the included files, it seems to work. 

  Here's the simplest scenario I can find to reproduce it.  Files are
in these relative paths:

/home/cliftonr/work:
   a.html
   b.html
   c.html

/home/cliftonr/work/htmltest:
     test-template.pl
     main.html

/home/cliftonr/work/a.html:
<b>Contents of template "a.html"</b>

 similarly for b.html and c.html

/home/cliftonr/work/htmltest:
#!/usr/bin/perl
use HTML::Template;
use constant TEMPLATE_DIR => '/home/cliftonr/work/html-test';
   my $template = HTML::Template->new(
        filename => TEMPLATE_DIR . '/' . $ARGV[0] );
   print $template->output( );
1;

/home/cliftonr/work/htmltest/main.html:
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><title>Main</title></head>
<body><div align=center style="height: 100%;"><table width=100%
border="0" cells
pacing="0" cellpadding="0" ><tr><td>
<tmpl_include NAME="../a.html">after a</td></tr><tr><td>
<tmpl_include NAME="../b.html">after b</td></tr> <tr><td> <tmpl_include NAME="../c.html"> </td></tr></table>
</div></body></html>


cd ~/work/html-test;
~/work/html-test/test-template.pl main.html
 [works normally, outputs template with all inclusions]

cd /home/cliftonr/random1/random2;
~/work/html-test/test-template.pl main.html
HTML::Template->new() : Cannot open included file ../c.html : file not found. at
 /usr/local/lib/perl5/site_perl/5.6.1/HTML/Template.pm line 2180.

Note that "a.html" is on its own line, and the following include of
"b.html" works OK, but "b.html" and "c.html" are on the same line, and
the second does not work.

  -- Clifton

-- 
          Clifton Royston  --  cli...@ti... 
         Tiki Technologies Lead Programmer/Software Architect
Did you ever fly a kite in bed?  Did you ever walk with ten cats on your head?
  Did you ever milk this kind of cow?  Well we can do it.  We know how.
If you never did, you should.  These things are fun, and fun is good.
                                                                 -- Dr. Seuss

Re: [htmltmpl] Stumbled on bug with multiple tmpl_include tags on line

[Clifton R. <cli...@ti...>]

On Thu, Mar 18, 2004 at 08:41:41AM -1000, Clifton Royston wrote:
> On Thu, Mar 18, 2004 at 12:55:29AM -0500, Cees Hek wrote:
> > Your explanation was very clear, I just can't reproduce the problem!  I 
> > only get that error message if the ../home-template.html doesn't 
> > actually exist on the filesystem, which seems like the right thing for 
> > it to do.  If the include files are there, it works fine for me...
> 
>   Maybe the error conditions are more restrictive than I thought, and
> depend on parameters to the template load. 

  That must be a part of the problem.  Quite odd.  I am currently
unable to reproduce it myself with a very simple script, so there's
something about the broader execution environment going on here...

  I'll check back in once I have a script which reproduces it.  

  -- Clifton

-- 
          Clifton Royston  --  cli...@ti... 
         Tiki Technologies Lead Programmer/Software Architect
Did you ever fly a kite in bed?  Did you ever walk with ten cats on your head?
  Did you ever milk this kind of cow?  Well we can do it.  We know how.
If you never did, you should.  These things are fun, and fun is good.
                                                                 -- Dr. Seuss

Re: [htmltmpl] Stumbled on bug with multiple tmpl_include tags on line

[Clifton R. <cli...@ti...>]

On Thu, Mar 18, 2004 at 12:55:29AM -0500, Cees Hek wrote:
> Clifton Royston wrote:
> >On Wed, Mar 17, 2004 at 11:45:42PM -0500, Cees Hek wrote:
> >
> >>Hi Clifton,
> >>
> >>I tried, but can't reproduce this problem.  Can you include a small code 
> >>sample with templates that actually displays this problem.
> >
> >
> >Simply edit the template I provided as follows;  I'm sorry my initial
> >explanation was not clear enough:
> 
> Your explanation was very clear, I just can't reproduce the problem!  I 
> only get that error message if the ../home-template.html doesn't 
> actually exist on the filesystem, which seems like the right thing for 
> it to do.  If the include files are there, it works fine for me...

  Maybe the error conditions are more restrictive than I thought, and
depend on parameters to the template load.  Let me try to simplify the
execution environment and include that too.  Right now the CGI which
loads the template is far too complex to include here; it's loaded from
within a module which does all kinds of login and session management,
parameter presetting, etc. as well.  I'll see if I can pare it down to
the minimum.
 
> By the way, I get the error message in line 2178 when the included file 
> doens't exist.  This leads me to believe we are using different versions 
> of HTML::Template (or you have made some local enhancements?)
 
  I don't think so, but I will check if there are any patches applied
as part of the FreeBSD port.

  -- Clifton

-- 
          Clifton Royston  --  cli...@ti... 
         Tiki Technologies Lead Programmer/Software Architect
Did you ever fly a kite in bed?  Did you ever walk with ten cats on your head?
  Did you ever milk this kind of cow?  Well we can do it.  We know how.
If you never did, you should.  These things are fun, and fun is good.
                                                                 -- Dr. Seuss

[htmltmpl] HTML::Pager and <SCRIPT> tag

[Martijn v. d. B. <Mar...@as...>]

Hi,

Since there's no list for HTML::Pager I thought I could get away with an 
OT post in its companion module, H::T.

H::P inserts the tag <SCRIPT LANGUAGE="Javascript"> at the position 
where the template variable PAGER_JAVASCRIPT is inserted. My problem is 
that this tag is not valid HTML 4.01 or XHTML, and hence my pages that 
use H::P aren't, either.

Proposed solution: change this tag into <script type="text/javascript"> 
(lowercase chars).


Kind regards,

-- 
</Martijn>
			'practice random acts of kindness
			and senseless acts of beauty'



-- 
The information contained in this communication and any attachments is confidential and may be privileged, and is for the sole use of the intended recipient(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please notify the sender immediately by replying to this message and destroy all copies of this message and any attachments. ASML is neither liable for the proper and complete transmission of the information contained in this communication, nor for any delay in its receipt.

Re: [htmltmpl] Stumbled on bug with multiple tmpl_include tags on line

[Cees H. <ce...@si...>]

Clifton Royston wrote:
> On Wed, Mar 17, 2004 at 11:45:42PM -0500, Cees Hek wrote:
> 
>>Hi Clifton,
>>
>>I tried, but can't reproduce this problem.  Can you include a small code 
>>sample with templates that actually displays this problem.
> 
> 
> Simply edit the template I provided as follows;  I'm sorry my initial
> explanation was not clear enough:

Your explanation was very clear, I just can't reproduce the problem!  I 
only get that error message if the ../home-template.html doesn't 
actually exist on the filesystem, which seems like the right thing for 
it to do.  If the include files are there, it works fine for me...

By the way, I get the error message in line 2178 when the included file 
doens't exist.  This leads me to believe we are using different versions 
of HTML::Template (or you have made some local enhancements?)

Is it possible that you are using a version <= 2.4 and are getting hit 
by the following bug?

- Bug Fix: nested include path handling was wrong

Cheers,

Cees

> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html>
> <head><title>Community</title></head><body> 
> <div align=center style="height: 100%;"><table width=770 height="100%" 
> border="0" cellspacing="0" cellpadding="0" ><tr><td>
> <tmpl_include NAME="../top.html"> </td></tr><tr><td><tmpl_include NAME="../home-template.html"> </td></tr> <tr><td>
> <tmpl_include NAME="../bottom.html">
> </td></tr></table></div></body></html>
> 
> That should generate this error when you do the "new" to load it:
> 
> HTML::Template->new() : Cannot open included file ../home-template.html: 
> file not found. at /usr/local/lib/perl5/site_perl/5.6.1/HTML/Template.pm 
> line 2180
> 
> On second thought, if it's still unclear, I'll write a tiny example in
> the morning complete with the code to invoke it.
> 
>   -- Clifton
> 

Re: [htmltmpl] Stumbled on bug with multiple tmpl_include tags on line

[Clifton R. <cli...@ti...>]

On Thu, Mar 18, 2004 at 03:22:49PM +1100, Mathew Robertson wrote:
> you are absolutely correct.
> 
> H::T uses the line count as a way to help figure out which included
> file that it is currently processiong -> without the carriage return
> character it cant figure out which file it is in.
> 
> Also, the design of H::T relies on using line numbers for generating
> meaningful error messages.
> 
> I dont see how this problem can be solved without a change in design. 
> Maybe it just needs a note added to the perldoc...

  I'd suggest in that case that the error message returned in this
situation should explicitly mention that each <tmpl_include> must be on
its own line?  I couldn't initially tell what feature of the
"compression" on the file was causing the problem.

   -- Clifton


-- 
          Clifton Royston  --  cli...@ti... 
         Tiki Technologies Lead Programmer/Software Architect
Did you ever fly a kite in bed?  Did you ever walk with ten cats on your head?
  Did you ever milk this kind of cow?  Well we can do it.  We know how.
If you never did, you should.  These things are fun, and fun is good.
                                                                 -- Dr. Seuss

Re: [htmltmpl] Stumbled on bug with multiple tmpl_include tags on line

[Clifton R. <cli...@ti...>]

On Wed, Mar 17, 2004 at 11:45:42PM -0500, Cees Hek wrote:
> Hi Clifton,
> 
> I tried, but can't reproduce this problem.  Can you include a small code 
> sample with templates that actually displays this problem.

Simply edit the template I provided as follows;  I'm sorry my initial
explanation was not clear enough:
 
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html>
<head><title>Community</title></head><body> 
<div align=center style="height: 100%;"><table width=770 height="100%" 
border="0" cellspacing="0" cellpadding="0" ><tr><td>
<tmpl_include NAME="../top.html"> </td></tr><tr><td><tmpl_include NAME="../home-template.html"> </td></tr> <tr><td>
<tmpl_include NAME="../bottom.html">
</td></tr></table></div></body></html>

That should generate this error when you do the "new" to load it:

HTML::Template->new() : Cannot open included file ../home-template.html: 
file not found. at /usr/local/lib/perl5/site_perl/5.6.1/HTML/Template.pm 
line 2180

On second thought, if it's still unclear, I'll write a tiny example in
the morning complete with the code to invoke it.

  -- Clifton

-- 
          Clifton Royston  --  cli...@ti... 
         Tiki Technologies Lead Programmer/Software Architect
Did you ever fly a kite in bed?  Did you ever walk with ten cats on your head?
  Did you ever milk this kind of cow?  Well we can do it.  We know how.
If you never did, you should.  These things are fun, and fun is good.
                                                                 -- Dr. Seuss

Re: [htmltmpl] Stumbled on bug with multiple tmpl_include tags on line

[Cees H. <ce...@si...>]

Hi Clifton,

I tried, but can't reproduce this problem.  Can you include a small code 
sample with templates that actually displays this problem.

Also, it might help to tells us which version of HTML::Template and 
which perl you are using (from the error message it looks like you are 
using perl 5.6.1, but I can't guess what version of HTML::Template).

I tested using HTML::Template 2.6 and perl 5.8.3 and didn't see a problem.

Cheers,

Cees


Clifton Royston wrote:
>   I probably won't be on this list too long, but wanted to pop in and
> report a bug.  Apparently if you have two or more <tmpl_include> tag on
> a line, the second one always bombs. Here's a fairly simplified test
> file for it:
> 
> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html>
> <head><title>Community</title></head><body> 
> <div align=center style="height: 100%;"><table width=770 height="100%" 
> border="0" cellspacing="0" cellpadding="0" ><tr><td>
> <tmpl_include NAME="../top.html"> </td></tr><tr><td>
> <tmpl_include NAME="../home-template.html"> </td></tr> <tr><td>
> <tmpl_include NAME="../bottom.html">
> </td></tr></table></div></body></html>
> 
>   The three included templates in question exist in the right relative
> location to the template.  This template is processed properly.  If the
> first & second or second & third <tmpl_include> tags are simply joined
> onto the same line, it bombs with this error:
> 
> HTML::Template->new() : Cannot open included file ../home-template.html: file not found. 
> at /usr/local/lib/perl5/site_perl/5.6.1/HTML/Template.pm line 2180
> 
>   I ran into this immediately when I tried using the htmlclean script
> (from HTML::Clean) to try to condense all our templates.  This is
> however the first bug I've run into in 6 to 8 months of working with
> HTML::Template to build a web GUI.  
> 
>   -- Clifton
> 

Re: [htmltmpl] Stumbled on bug with multiple tmpl_include tags on line

[Mathew R. <mat...@re...>]

you are absolutely correct.

H::T uses the line count as a way to help figure out which included file =
that it is currently processiong  -> without the carriage return =
character it cant figure out which file it is in.

Also, the design of H::T relies on using line numbers for generating =
meaningful error messages.

I dont see how this problem can be solved without a change in design.  =
Maybe it just needs a note added to the perldoc...

Mathew


----- Original Message -----=20
From: "Clifton Royston" <cli...@ti...>
To: <htm...@li...>
Sent: Thursday, March 18, 2004 1:55 PM
Subject: [htmltmpl] Stumbled on bug with multiple tmpl_include tags on =
line


>   I probably won't be on this list too long, but wanted to pop in and
> report a bug.  Apparently if you have two or more <tmpl_include> tag =
on
> a line, the second one always bombs. Here's a fairly simplified test
> file for it:
>=20
> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html>
> <head><title>Community</title></head><body>=20
> <div align=3Dcenter style=3D"height: 100%;"><table width=3D770 =
height=3D"100%"=20
> border=3D"0" cellspacing=3D"0" cellpadding=3D"0" ><tr><td>
> <tmpl_include NAME=3D"../top.html"> </td></tr><tr><td>
> <tmpl_include NAME=3D"../home-template.html"> </td></tr> <tr><td>
> <tmpl_include NAME=3D"../bottom.html">
> </td></tr></table></div></body></html>
>=20
>   The three included templates in question exist in the right relative
> location to the template.  This template is processed properly.  If =
the
> first & second or second & third <tmpl_include> tags are simply joined
> onto the same line, it bombs with this error:
>=20
> HTML::Template->new() : Cannot open included file =
../home-template.html: file not found.=20
> at /usr/local/lib/perl5/site_perl/5.6.1/HTML/Template.pm line 2180
>=20
>   I ran into this immediately when I tried using the htmlclean script
> (from HTML::Clean) to try to condense all our templates.  This is
> however the first bug I've run into in 6 to 8 months of working with
> HTML::Template to build a web GUI. =20
>=20
>   -- Clifton
>=20
> --=20
>           Clifton Royston  --  cli...@ti...=20
>          Tiki Technologies Lead Programmer/Software Architect
> Did you ever fly a kite in bed?  Did you ever walk with ten cats on =
your head?
>   Did you ever milk this kind of cow?  Well we can do it.  We know =
how.
> If you never did, you should.  These things are fun, and fun is good.
>                                                                  -- =
Dr. Seuss
>=20
>=20
> -------------------------------------------------------
> This SF.Net email is sponsored by: IBM Linux Tutorials
> Free Linux tutorial presented by Daniel Robbins, President and CEO of
> GenToo technologies. Learn everything from fundamentals to system
> =
administration.http://ads.osdn.com/?ad_id=3D1470&alloc_id=3D3638&op=3Dcli=
ck
> _______________________________________________
> Html-template-users mailing list
> Htm...@li...
> https://lists.sourceforge.net/lists/listinfo/html-template-users
> 

[htmltmpl] Stumbled on bug with multiple tmpl_include tags on line

[Clifton R. <cli...@ti...>]

  I probably won't be on this list too long, but wanted to pop in and
report a bug.  Apparently if you have two or more <tmpl_include> tag on
a line, the second one always bombs. Here's a fairly simplified test
file for it:

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html>
<head><title>Community</title></head><body> 
<div align=center style="height: 100%;"><table width=770 height="100%" 
border="0" cellspacing="0" cellpadding="0" ><tr><td>
<tmpl_include NAME="../top.html"> </td></tr><tr><td>
<tmpl_include NAME="../home-template.html"> </td></tr> <tr><td>
<tmpl_include NAME="../bottom.html">
</td></tr></table></div></body></html>

  The three included templates in question exist in the right relative
location to the template.  This template is processed properly.  If the
first & second or second & third <tmpl_include> tags are simply joined
onto the same line, it bombs with this error:

HTML::Template->new() : Cannot open included file ../home-template.html: file not found. 
at /usr/local/lib/perl5/site_perl/5.6.1/HTML/Template.pm line 2180

  I ran into this immediately when I tried using the htmlclean script
(from HTML::Clean) to try to condense all our templates.  This is
however the first bug I've run into in 6 to 8 months of working with
HTML::Template to build a web GUI.  

  -- Clifton

-- 
          Clifton Royston  --  cli...@ti... 
         Tiki Technologies Lead Programmer/Software Architect
Did you ever fly a kite in bed?  Did you ever walk with ten cats on your head?
  Did you ever milk this kind of cow?  Well we can do it.  We know how.
If you never did, you should.  These things are fun, and fun is good.
                                                                 -- Dr. Seuss

Re: [htmltmpl] H::T chunking of templates

[Pete P. <pet...@cy...>]

>>Ah, now I see. I read the text you wrote instead of the regex because, 
>>you know, I'm not a regex engine. ;)
>>
>>Of course *had* I properly read the regex you wrote, I would have 
>>figured it out.
> 
> 
> :-)
> 
> 
>>Couldn't you use a case-insensitive match though to avoid the 
>>[Tt][Mm][Pp][Ll] part?
> 
> 
> yep - but it would probably be about 10 times slower, as m//i makes a copy of the input string.
> 
> There are a number of places on the web which document this fact - until the perl regex engine gets smarter, then the [...] syntax is the best way to go

Well, gee - you learn something new everyday! - Thanks!


Pete

Re: [htmltmpl] H::T chunking of templates

[Mathew R. <mat...@re...>]

> Ah, now I see. I read the text you wrote instead of the regex because, =

> you know, I'm not a regex engine. ;)
>=20
> Of course *had* I properly read the regex you wrote, I would have=20
> figured it out.

:-)

> Couldn't you use a case-insensitive match though to avoid the=20
> [Tt][Mm][Pp][Ll] part?

yep - but it would probably be about 10 times slower, as m//i makes a =
copy of the input string.

There are a number of places on the web which document this fact - until =
the perl regex engine gets smarter, then the [...] syntax is the best =
way to go

Mathew

Re: [htmltmpl] H::T chunking of templates

[Pete P. <pet...@cy...>]

Mathew Robertson wrote:
>>>I was looking through H::T when I noticed that it splits the incoming template using:
>>>
>>>    split ( /(?<=)/ ,  $template)
>>>
>>>This regex ends up splitting on every '<'.
>>>
>>>I have modified my version to use:
>>>
>>>    split( m!(?=<(?:\!--\s*)?/?[Tt][Mm][Pp][Ll]_)! , $template)
>>>
>>>which thus matches only on <TMPL_ and </TMPL_ tags.
>>>
>>
>>Won't this break if you use the <!-- TMPL... --> constructs of putting 
>>the TMPL tags within HTML comments?
> 
> 
> Not from my testing it didn't; this regex only matches on:
> 
>    <TMPL_
>    </TMPL_
>    <!-- TMPL_
>    <!-- /TMPL_
> 
> doesn't matter where the TMPL_ construct is located.
> 
> However you could be right as there may be some cases where the regex doesn't quite match correctly, although I cant think of such a situation.

Ah, now I see. I read the text you wrote instead of the regex because, 
you know, I'm not a regex engine. ;)

Of course *had* I properly read the regex you wrote, I would have 
figured it out.

Couldn't you use a case-insensitive match though to avoid the 
[Tt][Mm][Pp][Ll] part?


Pete

Re: [htmltmpl] Using HTML::Template

[Mathew R. <mat...@re...>]

yep H::T is very good at this - and you could probably something simple =
like this, in less than 50 lines of code.

Mathew

  ----- Original Message -----=20
  From: J C=20
  To: htm...@li...=20
  Sent: Friday, March 05, 2004 7:03 AM
  Subject: [htmltmpl] Using HTML::Template


  I need to be able to do the following with a Perl script and send out =
emails via HTML or text (if they don't want HTML emails):

  I need to read in a file that would contain information like (customer =
id, first name, last name, address, etc.)

  I really don't want the HTML tags in the Perl script. I'll be sending =
different email messages, so I would prefer separate HTML =
files/templates--not sure how to do this. I also need to be able to =
include images.=20

  For example, one email might read:



  Dear <first name><last name>,

  Thank you for blah blah blah.

  Another <variable>.



  Another one might be:

  The following information is on file:

  <first name><last name>

  <address>

  Blah blah blah





  Is HTML::Template the best way to do this? Does it still work if I =
need a text version.

  Thank you very much!



-------------------------------------------------------------------------=
-----
  Do you Yahoo!?
  Yahoo! Search - Find what you're looking for faster.

Re: [htmltmpl] H::T chunking of templates

[Mathew R. <mat...@re...>]

> > I was looking through H::T when I noticed that it splits the =
incoming template using:
> >=20
> >     split ( /(?<=3D)/ ,  $template)
> >=20
> > This regex ends up splitting on every '<'.
> >=20
> > I have modified my version to use:
> >=20
> >     split( m!(?=3D<(?:\!--\s*)?/?[Tt][Mm][Pp][Ll]_)! , $template)
> >=20
> > which thus matches only on <TMPL_ and </TMPL_ tags.
> >=20
>=20
> Won't this break if you use the <!-- TMPL... --> constructs of putting =

> the TMPL tags within HTML comments?

Not from my testing it didn't; this regex only matches on:

   <TMPL_
   </TMPL_
   <!-- TMPL_
   <!-- /TMPL_

doesn't matter where the TMPL_ construct is located.

However you could be right as there may be some cases where the regex =
doesn't quite match correctly, although I cant think of such a =
situation.

cheers,
Mathew

Re: [htmltmpl] H::T chunking of templates

[Pete P. <pet...@cy...>]

Mathew Robertson wrote:
> Hi Sam,
> 
> I was looking through H::T when I noticed that it splits the incoming template using:
> 
>     split ( /(?<=)/ ,  $template)
> 
> This regex ends up splitting on every '<'.
> 
> I have modified my version to use:
> 
>     split( m!(?=<(?:\!--\s*)?/?[Tt][Mm][Pp][Ll]_)! , $template)
> 
> which thus matches only on <TMPL_ and </TMPL_ tags.
> 

Won't this break if you use the <!-- TMPL... --> constructs of putting 
the TMPL tags within HTML comments?


Pete

[htmltmpl] Using HTML::Template

[J C <jsh...@ya...>]

I need to be able to do the following with a Perl script and send out emails via HTML or text (if they don't want HTML emails):

I need to read in a file that would contain information like (customer id, first name, last name, address, etc.)

I really don't want the HTML tags in the Perl script. I'll be sending different email messages, so I would prefer separate HTML files/templates--not sure how to do this. I also need to be able to include images. 

For example, one email might read:

 

Dear <first name><last name>,

Thank you for blah blah blah.

Another <variable>.

 

Another one might be:

The following information is on file:

<first name><last name>

<address>

Blah blah blah

 

 

Is HTML::Template the best way to do this? Does it still work if I need a text version.

Thank you very much!



---------------------------------
Do you Yahoo!?
Yahoo! Search - Find what you’re looking for faster.

Re: [htmltmpl] extended TMPL_IF / UNLESS syntax

[Mathew R. <mat...@re...>]

> > I often find myself generating template code such as:
> >
> > <TMPL_UNLESS error>
> >     <TMPL_UNLESS print>
> >         <TMPL_IF some_var>
> >             .... do something...
> >         </TMPL_IF>
> >     </TMPL_UNLESS>
> > </TMPL_UNLESS>
>=20
> When I see stuff like that I go into my Perl code and whip up
> something like:
>=20
>   <tmpl_if no_error_and_no_print>
>     ... do something ...
>   </tmpl_if>
>=20
>   <tmpl_if no_error>
>     ... do something else ...
>=20
>   <tmpl_if error>
>     ... do something else entirely ...
>   </tmpl_if>
>=20
> That way the template stays simple and I concentrate the complex logic
> in the Perl code where it belongs.  If possible I try to find a way to
> phrase each condition that doesn't involve boolean logic, which few
> non-programmers fully understand.

Thats ok - except that since 'error' and 'print' are orthogonal concepts =
- the metaphore of not displaying either is really a user-interface =
problem, not an application problem.   As such, to generate the =
'no_error_and_no_print' value, the programmer would need to either:
a) get a set of requirements form the UI guy which states what extra =
variables need to be coded up,
b) automatically generate arbitrary names for each combination of =
template parameters, just in case the UI guy needs them.

In either case, we increase coupling between the UI and the backend =
application code.


> > The equivalent using H::T::E would be:
> >
> > <TMPL_UNLESS EXPR=3D"((defined error) or (defined print)) and ....">
> >     ... do something...
> > </TMPL_UNLESS>
>=20
> You can write that a little simpler:
>=20
>   <TMPL_UNLESS EXPR=3D"((error or print) and ...)">

'error' in scalar context, means something slightly different than =
'defined(error)' - however, you are correct for this rather poor example =
of mine...

>=20
> > both syntax's are reasonably ugly...
>=20
> Beauty is in the eye of the beholder...
>=20
> > What about a syntax like:
> >
> > <TMPL_IF !error,!print,some_var>
>=20
> ...which is proven by the fact that I find this much uglier than
> either of the two alternatives!

touche...

cheers,
Mathew

Re: [htmltmpl] shared_cache with H::T::E

[Sam T. <sa...@tr...>]

On Thu, 26 Feb 2004, Mathew Robertson wrote:

> We also use Apache/mod_perl.  The reason is that quite often there
> will be 20 instances of Apache running (ie we get may requests per
> second).  I'd like to reduce the memory usage a bit.  And yes I know
> that running H::T::E is slow, but speed is not the problem, where as
> memory pressure can be (on ocassions).

Just pre-load your templates during Apache startup.  There's an
example in the FAQ section of the HTML::Template docs.

-sam