[Cyril]

Here's what I'm using;

{% if !exists hideAbout %}
{# some html with a link to an about page goes here #}
{% endif %}

Now, that works fine. However, if I change it to:

{% if not exists hideAbout %}
{# some html with a link to an about page goes here #}
{% endif %}

El error appears.

Fatal error: Uncaught exception 'hydrogen\view\engines\hydrogen\exceptions\TemplateSyntaxException' with message 'Misplaced variable 't' in expression: 'not exists hideLogo'' in /Users/cyrilmengin/Sites/Made In Europe/MadeInEurope.com/lib/hydrogen/view/engines/hydrogen/ExpressionParser.php:282 Stack trace: #0 /Users/cyrilmengin/Sites/Made In Europe/MadeInEurope.com/lib/hydrogen/view/engines/hydrogen/nodes/IfNode.php(29): hydrogen\view\engines\hydrogen\ExpressionParser::exprToPHP('not exists hide...', Object(hydrogen\view\engines\hydrogen\PHPFile), 'layouts/base') #1 /Users/cyrilmengin/Sites/Made In Europe/MadeInEurope.com/lib/hydrogen/view/engines/hydrogen/NodeArray.php(36): hydrogen\view\engines\hydrogen\nodes\IfNode->render(Object(hydrogen\view\engines\hydrogen\PHPFile)) #2 /Users/cyrilmengin/Sites/Made In Europe/MadeInEurope.com/lib/hydrogen/view/engines/hydrogen/HydrogenEngine.php(197): hydrogen\view\engines\hydrogen\NodeArray->render() #3 /Users/cyrilmengin/Sites/Made In Europe/MadeInEurope.com/lib/hydrogen/view/View in /Users/cyrilmengin/Sites/Made In Europe/MadeInEurope.com/lib/hydrogen/view/engines/hydrogen/ExpressionParser.php on line 282

[Marked]

I think I found an error? The date function isn't working for me with timestamps:
This:

Outputs this:

[inkjetcanvas]

Love this! I use Django's Template (the .py version) for my day job and this for our side projects and really enjoy working in it.

One request that I'd love is the addition of a {% verbatim %} block to escape my handlebars.js templates. This guy did it for the .py version, found here:
http://tothinkornott...-js-with-django

and his code here:
https://gist.github.com/629508

This way I can do stuff like:

<div class="{{ some.hydrogen.var }}">
{% verbatim %}
<p>{{ my.handlebars.var }}</p>
{% endverbatim %}
</div>

Since I'm a front-ender I'll probably look to build a JS-side adaptation to handlebars before I try to hack on some PhP, but it would make me very happyface to see this as a part of hydrogen's templates.

[Kyek]

Interesting! That would be a good addition -- adding

{% templatetag openvariable %}

and

{% templatetag closevariable %}

Everywhere would do it, but would totally suck. I'll put this on my list

[derTechniker]

Kyek, on 31 December 2011 - 08:15 AM, said:

So when I first read this, I was all, "well that's strange, I didm't change anything and my tests for the "not" keyword still work. Then we started using Hydrogen at work and one of my devs started writing templates, and he had no issue with 'not'. Can I see the snippet where it's not working?

had the same issue a month ago when i tried it, do not have the codeblock anymore, but it was a simple 'not' statement

[Jawsh]

Hey, I'm wondering if the Hydrogen View engine can do something similar to the Twig global feature, or possible to achieve this? http://twig.sensiola...ed.html#globals

[gibbonweb]

Jawsh, on 18 March 2012 - 11:47 AM, said:

Hey, I'm wondering if the Hydrogen View engine can do something similar to the Twig global feature, or possible to achieve this? http://twig.sensiola...ed.html#globals

Of course! They are not called globals though, but are just variables in an array called 'context' you'd pass into the view. The twig example would look like this in Hydrogen:

<?php
$mycontext = array( "text" => new Text() );
View::load('text', $mycontext);

// or, of course, just in one statement:

View::load('text', array(
				'text' => new Text()
			));

Passing parameters to template variables as in

{{text.lipsum(40)}}

(twig) is not possible as far as I know (but I might just have forgotten it - didn't use Hydrogen in a long time due to lack of time ).

In the example, lipsum(40) will give you a Lorem ipsum text of length 40 (words?) - THAT you can achieve with the excerpt filter

{{text.lipsum|except:5:"w":"."}}

I wrote just for you a few months ago (to be fair, I wrote a horrid, strangely formatted draft for it and Kyek replaced almost every single line of it when he merged my code xD).

[Jawsh]

Can anyone provide me on any more details on how I can achieve the twig global function in Hydrogen?

[Kyek]

Hey Jawish-- Gibbonweb's answer should be what you need . The only difference between globals in Twig and globals in Hydrogen is that Hydrogen just calls them variables.

Just do this...

View::setVar('myVar', new SomeObj());
// or...
View::setVar('myVar', 4);

And then whenever you get around to loading a view, that variable will be there. Or, as Gibbonweb said, you can just pass those variables in with the View::load() call for the same effect.

[Jawsh]

Thanks, Kayak. (You misspell my name, I'll misspell yours. )

[Kyek]

Ha -- apologies, Jawsh xD

[Hamador]

I just started playing with the templates and I'm getting an error

Misplaced variable '&&' in expression: 'employees and admin = 1'

My code is :

{% if employees and admin = 1 %}

if I do

{% if employees %}{% if admin = 1 %}

it works just fine, is there something I'm missing on how 'and' is supposed to be used?

[Kyek]

To be honest, I think that the bug isn't that

{% if employees and admin = 1 %}

doesn't work.. it's that

{% if employees %}

DOES work xD.

I never built out full support for the "if VARNAME" syntax -- you have to say something like "if exists varname" or "if varname = 1". So the following would work:

{% if exists employees and admin = 1 %}
<!-- or... -->
{% if employees = 1 and admin = 1 %}

But apparently the only reason

{% if employees %}

works right now is because the expression ends, and Hydrogen isn't checking to make sure the expression was completed before it renders it to PHP. It's just by sheer stroke of luck that it produces valid PHP when it renders that

Good catch!

[Hamador]

From the overview I took to understand

{% if employees %}

would evaluate a true/false, the var employee is always set to either content or false.

I also attempted

{% if user.name = "hamador" and admin = 1 %}

with the same error.

[Kyek]

Oh well damn. Definitely a bug then -- I'll check it out asap!