Use PHP function in TWIG?

Question

In PHP templates I can use php functions, for example:

foreach ($users as $user){
  echo someFunction($user->getName());
}

How can I make it in TWIG?

{% for user in users %}
    * {{ user.name }}
{% else %}
    No user have been found.
{% endfor %}

How do I achieve this?

Wesley van Opdorp · Accepted Answer · 2011-11-18 10:03:27Z

13

What you need are functions or filters. You can easily add these using the examples.

answered Nov 18, 2011 at 10:03

Wesley van Opdorp

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3 Comments

RayOnAir Over a year ago

Could you include a bit of details about the implementation? Should the function and the instantiation of the "Twig_Environment" class be included in the controller? Should the object "$twig = new Twig_Environment($loader)" be passed as a variable (e.g. 'twig'=>$twig) to the rendered template? What should be included in the "/path/to/templates" in the definition "$loader = new Twig_Loader_Filesystem('/path/to/templates');". Is that the path to the templates in my bundle? does it need to be absolute? It does not work for me. An example would be most appreciated...

h00ligan Over a year ago

For anyone coming here and wanting an example, there's a very good and simple example in the Twig documentation at sensiolabs: twig.sensiolabs.org/doc/advanced.html#functions

DarkBee Over a year ago

FYI: Links are dead

Nick · Accepted Answer · 2018-05-07 06:22:48Z

11

// $twig is a Twig_Environment instance.

$twig->registerUndefinedFunctionCallback(function($name) {
    if (function_exists($name)) {
        return new Twig_SimpleFunction($name, function() use($name) {
            return call_user_func_array($name, func_get_args());
        });
    }
    throw new \RuntimeException(sprintf('Function %s not found', $name));
});

In a twig template:

{{ explode(",", "It's raining, cats and dogs.").0 | raw }}

this will output "It's raining". By default, returned values are escaped in Twig.

Twig_SimpleFunction is the preferred class to use. All other function related classes in Twig are deprecated since 1.12 (to be removed in 2.0).

In a Symfony2 controller:

$twig = $this->get('twig');

edited May 7, 2018 at 6:22

Nick

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answered Nov 27, 2013 at 19:20

akarbiv

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3 Comments

gondo Over a year ago

where should be this registered in standard symfony2 app?

Niels Keurentjes Over a year ago

This should never, ever be used as it's terribly insecure.

akarbiv Over a year ago

Not really, it doesn't suddenly turn into a wordpress. But templates should only render HTML/Javascript using available data.

umpirsky · Accepted Answer · 2014-12-10 20:13:43Z

1

There is already a Twig extension that lets you call PHP functions form your Twig templates like:

Hi, I am unique: {{ uniqid() }}.

And {{ floor(7.7) }} is floor of 7.7.

See official extension repository.

answered Dec 10, 2014 at 20:13

umpirsky

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Comments

Nenai · Accepted Answer · 2013-01-21 20:02:02Z

0

If you're working in symfony 2 this should also help. Concept is the same but you put the code somewhere else and format it a little differently.

http://symfony.com/doc/2.0/cookbook/templating/twig_extension.html

answered Jan 21, 2013 at 20:02

Nenai

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