Twig: while-workaround - twig

Question

I've already a solution, but just for JavaScript. Unfortunately while-loops do not exist in Twig.
My Twig-target in JavaScript:
var x = 10; // this is an unknown number
var result = x;
while (100 % result !== 0) {
result++;
}
console.log(result);
Any ideas how I do this in Twig?
What's my target: (not important if you already understood)
I want to get the first number after my unknown number, that satisfy the following condition:
100 divided by (the first number) equals a whole number as result.
EDIT: I have no access to PHP nor Twig-core.

Answer 1

You can make a Twig extension like:
namespace Acme\DemoBundle\Twig\Extension;
class NumberExtension extends \Twig_Extension
{
public function nextNumber($x)
{
$result = $x;
while (100 % $result !== 0) {
$result++;
}
return $result;
}
public function getFunctions()
{
return array(
'nextNumber' => new \Twig_Function_Method($this, 'nextNumber'),
);
}
/**
* Returns the name of the extension.
*
* #return string The extension name
*/
public function getName()
{
return 'demo_number';
}
}
And define it in the service.xml of the bundle:
<service id="twig.extension.acme.demo" class="Acme\DemoBundle\Twig\Extension\NumberExtension" >
<tag name="twig.extension" />
</service>
Then use it in the template:
{{ nextNumber(10) }}
UPDATE
A (not so great) approach but that possibly satisfy your needed is to do something like this:
{% set number = 10 %}
{% set max = number+10000 %} {# if you can define a limit #}
{% set result = -1 %}
{% for i in number..max %}
{% if 100 % i == 0 and result < 0 %} {# the exit condition #}
{% set result = i %}
{% endif %}
{% endfor %}
<h1>{{ result }}</h1>
Hope this help

Answer 2

In my case - I had to output an object with similar subobjects - including a templete with predefined values and setting up a normal if-condition worked.
See http://twig.sensiolabs.org/doc/tags/include.html for more infomration.