Re: [htmltmpl] new work on HTML::Template
Hi H::T users, Last week there was a discussion regarding enhancements to H::T. As a result, I have uploaded my enhancements to CPAN: https://pause.perl.org/pub/PAUSE/authors/id/M/MA/MATHEW/ feel free to criticise... :) regards, Mathew Robertson -- Forrester Wave Report - Recovery time is now measured in hours and minutes not days. Key insights are discussed in the 2010 Forrester Wave Report as part of an in-depth evaluation of disaster recovery service providers. Forrester found the best-in-class provider in terms of services and vision. Read this report now! http://p.sf.net/sfu/ibm-webcastpromo___ Html-template-users mailing list Html-template-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/html-template-users
Re: [htmltmpl] new work on HTML::Template
Another feature request: would it be possible to use a var name in an include tag? The goal is to include a template whose name is the value of a var. Does someone already do such a thing? Clément. Yes, you can do that now - if you call use the recursive templates I listed above. Regards, Mathew Robertson -- Forrester Wave Report - Recovery time is now measured in hours and minutes not days. Key insights are discussed in the 2010 Forrester Wave Report as part of an in-depth evaluation of disaster recovery service providers. Forrester found the best-in-class provider in terms of services and vision. Read this report now! http://p.sf.net/sfu/ibm-webcastpromo___ Html-template-users mailing list Html-template-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/html-template-users
Re: [htmltmpl] new work on HTML::Template
Le 7 avril 2011 15:39, Michael Peters mpet...@plusthree.com a écrit : On 04/07/2011 03:42 AM, Clément OUDOT wrote: We develop a special filter, called translate_template, that allows to definelang markup in the template with translations. When the filter run, it only keep the translation of the user language. With this, we have internationalized templates. We actually do something very similar in the Krang project. i18n is accomplished with tmpl_lang tags like so: tmpl_lang Please press the button And the preprocessor will translate that into all of the supported languages and then it saves those translated templates to the file system. Maybe we can try to include this feature in H::T core module? Honestly I don't think it's the right place. As you can see from my explanation above, there are lots of ways to do i18n. Also, as you can see we didn't want to take the hit at runtime so we pre-translate all templates at application startup and thus don't have to ever do it again until something changes and we then have to restart. I could see releasing either your filter approach, or the approach by Krang as separate modules onto CPAN, but not general enough for H::T A separate module can be fine! Another feature request: would it be possible to use a var name in an include tag? The goal is to include a template whose name is the value of a var. Does someone already do such a thing? Clément. -- Xperia(TM) PLAY It's a major breakthrough. An authentic gaming smartphone on the nation's most reliable network. And it wants your games. http://p.sf.net/sfu/verizon-sfdev ___ Html-template-users mailing list Html-template-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/html-template-users
Re: [htmltmpl] new work on HTML::Template
2011/4/6 Michael Peters mpet...@plusthree.com: Any questions? Comments? Verbal Abuse? Any offers of help? Hi, we use H::T in LemonLDAP::NG, a free Web Single Sign On (http://lemonldap-ng.org), it is very helpful! We develop a special filter, called translate_template, that allows to define lang markup in the template with translations. When the filter run, it only keep the translation of the user language. With this, we have internationalized templates. Maybe we can try to include this feature in H::T core module? Clément. -- Xperia(TM) PLAY It's a major breakthrough. An authentic gaming smartphone on the nation's most reliable network. And it wants your games. http://p.sf.net/sfu/verizon-sfdev ___ Html-template-users mailing list Html-template-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/html-template-users
Re: [htmltmpl] new work on HTML::Template
Its interesting that thread of discussion has been raised I have been using H::T for years - as a result, I have added most of these features to my own instance. Just this week I finished testing a new H::T::Bundle module which I was going to upload to CPAN, Features in my instance: - some bugs fixed - support for die_on_unset_params which causes the output() to die if the programmer hasn't called param(somevar =...) when 'somevar' exists in the template - big performance enhancement in the output() phase - recursive templates (at a performance hit) - output() by reference - TMPL_ELSIF - TMPL_REQUIRE - like TMPL_INCLUDE but only once ala Perl 'require'. - support for simple perl-array based loops - the ability to sub-class and so hook-in to create new TMPL_xxx semantics - dynamic loading of ESCAPE modules - 'includes_debug' which matches the other debug modes. - profiling support - preliminary support for objects, aka some_obj.some_attr, without having to do this yourself - support for intrinsic_vars such as '__type__' and '__filename__' - '__even__' and '__outer__' (TMPL_UNLESS __odd__ just seems wrong...) - updated the docs - updated some of the test cases. - utf8 safe TODO: - support for automatic length param on loops - more test cases for objects, as I'm not 100% sure I got everything. - TMPL_LOOP support for non-hash rows. - more test cases which covers the use-cases for reftype() Via the H::T::Bundle sub-class I added: - TMPL_SET - support for pre-written filters (about a dozen so far) - % somevar % implemented as a filter - sane H::T defaults, as I think global_vars and loop_context_vars should be the default - Environmental variables in templates A note regarding the format option - this could be implemented in a sub-class using a new keyword, as in TMPL_STRING var format=blah and/or TMPL_PRECISION var precision=blah. ie: extending TMPL_VAR is possible, but given the hug number of possibilities, it might be easier to do something similar to TMPL_CATGETS var which is a implementation of the gnus catgets() call, but from within templates (or just use a real translation engine either via preprocessing or real-time ). Thoughts? cheers, Mathew Robertson -- Xperia(TM) PLAY It's a major breakthrough. An authentic gaming smartphone on the nation's most reliable network. And it wants your games. http://p.sf.net/sfu/verizon-sfdev___ Html-template-users mailing list Html-template-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/html-template-users
Re: [htmltmpl] new work on HTML::Template
On 04/06/2011 05:13 PM, Brad Baxter wrote: But finally I decided I needed to abandon it, because mentally I just couldn't handle the fact that setting an attribute in the object was dependent on the attribute existing in the template. I'm not sure I understand this problem. HTML template doesn't really work with objects, just hash references in loops. Are are you saying it was using your hash-based objects as if they were just hashes? That itself was probably not the best idea. Also, was this just a matter of turning die_on_bad_params off? I know it's the default, but if you don't want everything in your hashes to be in the template, then that's the right solution. __index__ (__counter__-1) I can see adding that one. It can be derived from counter, but making you use HTML::Template::Expr to derive it could be a pain. __break__ I looked at the docs for HTML::Template::Compiled (which are really sparse by the way with lots of circular references) and I'm not quite sure what it does. Does it stop the current loop? If so, that seems like a really bad idea for just a specially named tmpl_var. Although, I could see the use in a tmpl_break tag. Thanks for the feedback. -- Michael Peters Plus Three, LP -- Xperia(TM) PLAY It's a major breakthrough. An authentic gaming smartphone on the nation's most reliable network. And it wants your games. http://p.sf.net/sfu/verizon-sfdev ___ Html-template-users mailing list Html-template-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/html-template-users
Re: [htmltmpl] new work on HTML::Template
On Wed, Apr 06, 2011 at 03:21:13PM -0400, Michael Peters wrote: + Add a tmpl_set tag. Could be useful for template driven behaviors (combined with param() or query()) or when combined with tmpl_include: I've found this very useful, though: (a) I'm not sure it needs to live in the base module; (b) the behaviour within loops would need to be carefully defined. (My quick hack simply ignores loops.) Any questions? Comments? Verbal Abuse? Any offers of help? Sure, what do you need? H::T has been good to me. R -- Xperia(TM) PLAY It's a major breakthrough. An authentic gaming smartphone on the nation's most reliable network. And it wants your games. http://p.sf.net/sfu/verizon-sfdev ___ Html-template-users mailing list Html-template-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/html-template-users
Re: [htmltmpl] new work on HTML::Template
On 04/06/2011 05:41 PM, Alex Teslik wrote: As long as the main feature of keeping logic completely separate from presentation is left intact, this is great news. The limitations of H::T are the exact reason we chose it as our templating system. Yes definitely. We use it heavily in places where users aren't that sophisticated and even if they are, we want to restrict the damage that they could do with just templates. If there were a way for child loops to use vars from the parent loop if they do not exist in the child, it would be great. The global_vars feature puts the vars into -every- loop, which is overkill and incurs a very hefty speed penalty. It also clobbers same named vars in the child. As a result we don't use global_vars at all and manually populate child loops with parent vars explicitly as needed. This makes the perl get a little ugly but prevents the speed hit. Maybe a new lexical_vars option that will fall back to a parent-loop or top-level declared var if one doesn't exist in the current loop? That would be similar to the way vars work in Perl loops. Is that what you're asking for? -- Michael Peters Plus Three, LP -- Xperia(TM) PLAY It's a major breakthrough. An authentic gaming smartphone on the nation's most reliable network. And it wants your games. http://p.sf.net/sfu/verizon-sfdev ___ Html-template-users mailing list Html-template-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/html-template-users
Re: [htmltmpl] new work on HTML::Template
I'm not a very advanced user, but I would like to see one minor change.
I would like to be able to include a closing slash, for example:
tmpl_var name=foo /
Just because jEdit's html mode gets confused when trying to identify
beginning and ending tags.
Matt
On 04/06/2011 01:21 PM, Michael Peters wrote:
This email is an announcement of sorts for some work I've got planned
for HTML::Template. I'm greatly in debt to Sam Tregar for this module
and the use that I've gotten out it over the years.
After talking with Sam, he's given me permission to try to further the
development of HTML::Template to give some needed features while
maintaining the spirit that it was originally written in. That is, to be
a fast, straight forward and easy to learn templating engine. To that
end, I've got the following goals:
+ Move HTML::Template development to github. My repo is located at:
https://github.com/mpeters/html-template
+ Use default perltidy settings
+ Use Dist::Zilla for release management
+ Go through the current RT queue and do some fixes, updates and triage.
+ Add atmpl_elsif tag
+ Add a format attribute with built-in and user defined formats:
tmpl_var cost
tmpl_var cost format=currency
tmpl_var cost format=number
+ User defined escapes
+ Add an encoding param to more easily handle UTF8/Unicode.
+ Break out parsing of templates into HTML::Template::Parser so that
templates can be parsed and manipulated outside of rendering. And use
HTML::Template::Parser internally in HTML::Template.
And for HTML::Template::Expr I want to do:
+ Allow boolean ! in expressions for things like:
tmpl_if expr=foo !bar.../tmpl_if
+ Allow || to work more like Perl's || when used in atmpl_var :
tmpl_var expr=foo || bar
Other ideas I'm on the fence about:
+ Like HTML::Template::Plugin::Dot allow methods to be called on
objects:
tmpl_var start_date.mdy('-')
+ Add atmpl_set tag. Could be useful for template driven behaviors
(combined with param() or query()) or when combined with
tmpl_include:
Any questions? Comments? Verbal Abuse? Any offers of help?
Thanks,
--
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Re: [htmltmpl] new work on HTML::Template
On Wed, 06 Apr 2011 15:21:13 -0400, Michael Peters wrote This email is an announcement of sorts for some work I've got planned for HTML::Template. I'm greatly in debt to Sam Tregar for this module and the use that I've gotten out it over the years. After talking with Sam, he's given me permission to try to further the development of HTML::Template to give some needed features while maintaining the spirit that it was originally written in. That is, to be a fast, straight forward and easy to learn templating engine. As long as the main feature of keeping logic completely separate from presentation is left intact, this is great news. The limitations of H::T are the exact reason we chose it as our templating system. To that end, I've got the following goals: + Add a tmpl_elsif tag YES, PLEASE! + User defined escapes Also welcome. Any questions? Comments? Verbal Abuse? Any offers of help? If there were a way for child loops to use vars from the parent loop if they do not exist in the child, it would be great. The global_vars feature puts the vars into -every- loop, which is overkill and incurs a very hefty speed penalty. It also clobbers same named vars in the child. As a result we don't use global_vars at all and manually populate child loops with parent vars explicitly as needed. This makes the perl get a little ugly but prevents the speed hit. All in all, great news. The module still works great, but improvements are always welcome! Thanks, Alex -- Xperia(TM) PLAY It's a major breakthrough. An authentic gaming smartphone on the nation's most reliable network. And it wants your games. http://p.sf.net/sfu/verizon-sfdev ___ Html-template-users mailing list Html-template-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/html-template-users
Re: [htmltmpl] new work on HTML::Template
On Wed, Apr 6, 2011 at 5:28 PM, Michael Peters mpet...@plusthree.com wrote:
On 04/06/2011 05:13 PM, Brad Baxter wrote:
But finally I decided I needed to abandon it,
because mentally I just couldn't handle the fact that setting an
attribute in the object was dependent on the attribute existing in
the template.
I'm not sure I understand this problem. HTML template doesn't really work
with objects, just hash references in loops. Are are you saying it was using
your hash-based objects as if they were just hashes? That itself was
probably not the best idea.
Also, was this just a matter of turning die_on_bad_params off? I know it's
the default, but if you don't want everything in your hashes to be in the
template, then that's the right solution.
At the end of this note is code that produces this output:
0:[
[] trees
[rotten] logs
]
1:[
[maple] trees
[rotten] logs
]
2:[[maple] trees]
Note that maple appears in 1: but not in 0:, even though
the template object in both cases has these values set:
$tmpl-param( trees = [{ type = 'maple' }] );
$tmpl-param( forest = [{ logs = 'rotten' }] );
This is in fact documented:
NOTE: global_vars is not global_loops (which does not exist). That
means that loops you declare at one scope are not available inside
other loops even when global_vars is on.
So my complaint is that my perl code is setting the
same values in the $tmpl object, but the module
does not honor the value unless it sees the loop
in the template a certain way. My explanation is
confusing, I know -- the whole situation is confusing
(to me). And that's what made me have to say
enough finally after running into this multiple times.
You could say I want global everything, but what I
really want is for my template object to actually
contain the values that I set in it, so I can pass it
with associate to a child object. I see someone
else is suggesting parent/child relationships be
supported, which is what I essentially was after.
__break__
I looked at the docs for HTML::Template::Compiled (which are really sparse
by the way with lots of circular references) and I'm not quite sure what it
does.
It lets you output something on every
nth iteration, e.g. (from the docs),
The LOOP, WHILE and EACH tags allow you to define a BREAK attribute:
tmpl_loop bingo break=3 tmpl_var _ if __break__\n/if/tmpl_loop
$htc-param(bingo = [qw(X 0 _ _ X 0 _ _ X)]);
outputs
X 0 _
_ X 0
_ _ X
(Code for above maple trees/rotten logs example:)
#!/usr/local/bin/perl
use strict;
use warnings;
use HTML::Template;
DEMO_A: {
my $text = _end_;
0:[TMPL_LOOP forest
[TMPL_LOOP treesTMPL_VAR type/TMPL_LOOP] trees
[TMPL_VAR logs] logs
/TMPL_LOOP]
_end_
my $tmpl = HTML::Template-new(
scalarref = \$text,
global_vars = 1,
die_on_bad_params = 0,
);
$tmpl-param( trees = [{ type = 'maple' }] );
$tmpl-param( forest = [{ logs = 'rotten' }] );
print $tmpl-output;
}
DEMO_B: {
my $text = _end_;
1:[TMPL_LOOP forest
[TMPL_LOOP treesTMPL_VAR type/TMPL_LOOP] trees
[TMPL_VAR logs] logs
/TMPL_LOOP]
2:[TMPL_LOOP trees[TMPL_VAR type]/TMPL_LOOP trees]
_end_
my $tmpl = HTML::Template-new(
scalarref = \$text,
global_vars = 1,
die_on_bad_params = 0,
);
$tmpl-param( trees = [{ type = 'maple' }] );
$tmpl-param( forest = [{ logs = 'rotten' }] );
print $tmpl-output;
}
__END__
--
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Re: [htmltmpl] new work on HTML::Template
On 06/04/2011 23:37, Brad Baxter wrote: ... So my complaint is that my perl code is setting the same values in the $tmpl object, but the module does not honor the value unless it sees the loop in the template a certain way. My explanation is confusing, I know -- the whole situation is confusing (to me). And that's what made me have to say enough finally after running into this multiple times. I think using the term object here is confusing. I gather you are talking about the scoping of variables? Such the loop variables should be within the scope (probably optionally) of child loops? Lyle -- Xperia(TM) PLAY It's a major breakthrough. An authentic gaming smartphone on the nation's most reliable network. And it wants your games. http://p.sf.net/sfu/verizon-sfdev___ Html-template-users mailing list Html-template-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/html-template-users
Re: [htmltmpl] new work on HTML::Template
On Wed, Apr 6, 2011 at 6:57 PM, Lyle webmas...@cosmicperl.com wrote: On 06/04/2011 23:37, Brad Baxter wrote: ... So my complaint is that my perl code is setting the same values in the $tmpl object, but the module does not honor the value unless it sees the loop in the template a certain way. My explanation is confusing, I know -- the whole situation is confusing (to me). And that's what made me have to say enough finally after running into this multiple times. I think using the term object here is confusing. I gather you are talking about the scoping of variables? Such the loop variables should be within the scope (probably optionally) of child loops? Yes, and yes (I think). :-) I use the term object, because it is in fact an object. And I'm used to setting values in objects and expecting them to be there when I look back at them. Typically these values are object attributes. In H::T these values are variables with scopes. An that's where my mental picture of setting values in objects and H::T's implementation diverge. I want to set values in the template object regardless of what the template looks like, but H::T will choose not to set some values if there isn't a scope for them defined in the template. And by default, it will die in those cases. Not to belabor the issue, the bottom line (ignoring speed) comes down to inheritance, which I can't do in H::T as it stands, because I want to define a parent template object that contains *only* values (loops and vars) and doesn't have a template at all. __ Brad -- Xperia(TM) PLAY It's a major breakthrough. An authentic gaming smartphone on the nation's most reliable network. And it wants your games. http://p.sf.net/sfu/verizon-sfdev ___ Html-template-users mailing list Html-template-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/html-template-users
Re: [htmltmpl] new work on HTML::Template
On 07/04/2011 00:36, Brad Baxter wrote: On Wed, Apr 6, 2011 at 6:57 PM, Lylewebmas...@cosmicperl.com wrote: I think using the term object here is confusing. I use the term object, because it is in fact an object. For further clarification, and without looking at the H::T implementation. You are calling it an object because in the sense of the term 'object' the template is an object. But, it's not a Perl object, which is likely where further confusion comes from. Or are you talking about the implementation within H::T? Lyle -- Xperia(TM) PLAY It's a major breakthrough. An authentic gaming smartphone on the nation's most reliable network. And it wants your games. http://p.sf.net/sfu/verizon-sfdev___ Html-template-users mailing list Html-template-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/html-template-users
Re: [htmltmpl] new work on HTML::Template
On 07/04/2011 00:30, Alex Teslik wrote: On Wed, 06 Apr 2011 17:53:01 -0400, Michael Peters wrote Maybe a new lexical_vars option that will fall back to a parent- loop or top-level declared var if one doesn't exist in the current loop? That would be similar to the way vars work in Perl loops. Is that what you're asking for? lexical_vars option would be perfect. If it could also be controlled in-loop that would be useful and time saving __lexical_vars = 0 That sounds very sensible :) Lyle -- Xperia(TM) PLAY It's a major breakthrough. An authentic gaming smartphone on the nation's most reliable network. And it wants your games. http://p.sf.net/sfu/verizon-sfdev ___ Html-template-users mailing list Html-template-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/html-template-users
