Use namespaced class in Latte

amik

Hi,
is there currently any way to use PHP class in a latte template?
the {use} macro imports new macros and I haven't found any other way.

I want to do something like:

{useClass App\Foo\Bar\BazEnum}
...

<div n:if="$currentBaz === BazEnum::BAZ_ONE">
    Welcome to Baz One.
</div>

If this is not currently supported, do you consider it useful so that I'll maybe create pull request for it?

Thanks.

Michal Vyšinský

Hi,
you can use {php} macro:

{php use App\Foo\Bar\BazEnum}

Disclaimer: I've not been working with Latte for a long time but I hope it still works :)

Last edited by Michal Vyšinský (2016-03-17 11:46)

Michal Hlávka

{\App\Foo\Bar\BazEnum::BAZ_ONE}

amik

Michal Vyšinský wrote:

Hi,
you can use {php} macro:
{php use App\Foo\Bar\BazEnum}
Disclaimer: I've not been working with Latte for a long time but I hope it still works :)

Well, no, because compiled Latte template is a class and all content (including prolog and epilog) is placed inside render() method. Rendered template looks like this (:

<?php
// source: /Users/richard/www/some/template.latte

class Template97f58933c6d409c1190406bf7eb23a28 extends Latte\Template {
function render() {
foreach ($this->params as $__k => $__v) $$__k = $__v; unset($__k, $__v);
// prolog Latte\Macros\CoreMacros
list($_b, $_g, $_l) = $template->initialize('86673602b1', 'html')
;
//
// main template
//
use App\Foo\Bar\BazEnum; //OBVIOUSLY WRONG
?>
<h1>Hello world</h1>
<?php
}}

anyway, {php} macro does not exist any more, it would be {? … } now, but still not usable for use statements because of the reason above.

Pavel Kravčík

In case when working with class without dependindecies (entities). But I prefer @emptywall's solutions.

// Presenter
use \Very\Far\Far\Place\FooClass;

$this->template->fooClass = new FooClass;

// Template

{if $bar == $fooClass::BAZ_ONE}

Last edited by Pavel Kravčík (2016-03-17 12:28)

amik

@PavelKravčík yes this obviously works, but with long expressive namespaces it makes a mess in your template.
@PavelKravčík yes, this also works, but still it is a workaround needing to add extra stuff into Presenter…
So, there is no native way?

hrach

@MichalVyšinský you can't, see my two year old PR.

https://github.com/…/issues/1121

But this is insufficient because it gets rendered after snippet blocks. If you need that class in snippet, you are out.

Last edited by hrach (2016-03-17 13:49)

hrach

Anyone!, feel free to pick the PR and rebase. :)

amik

@hrach thanks, your last comment on the issue led me to idea similar like @PavelKravčík 's solution :)

{var $BazEnum = \Fully\Qualified\Name\Of\Baz\Enum::class} {* or pass as a string in PHP<=5.4 *}

{$BazEnum::BAZ_ONE}

That's it. Still kinda hack, but at least it does not pollute presenters.

Pavel Kravčík

@amik: Well, this is very close to perfect. My “solution” was ugly, I mostly use “full namespace way”. But your hack seems better than “full namespace way”.

Michal Vyšinský

And what about making if ‘fake’? So basically modify template in compile time?

{useClass Some\Foo\Bar}

{Bar::SOME_CONSTANT}

Before compliling to php code it could replace Bar with Some\Foo\Bar. So you would have comfort of using short class name and Latte would be happy too.

Last edited by Michal Vyšinský (2016-03-17 15:02)

amik

Michal Vyšinský wrote:

And what about making if ‘fake’? So basically modify template in compile time?
{useClass Some\Foo\Bar}

{Bar::SOME_CONSTANT}
Before compliling to php code it could replace Bar with Some\Foo\Bar. So you would have comfort of using short class name and Latte would be happy too.

How? What you've written here will not work, my original point was that there is no macro like useClass.

Michal Vyšinský

Yeah, if I understand correctly there is no way to use real ‘use’ in Latte because template becomes a class. What I wrote is just an idea how it could be implemented.

Last edited by Michal Vyšinský (2016-03-17 17:22)