Print a variable that contains html and twig on a twig template

Question

I have a variable suppose that is: $menustr; this variable contains code html and some twig parts for example:

$menustr .= '<li><a href="{{ path("'. $actual['direccion']  .'") }}" >'. $actual['nombre'] .'</a></li>';

I need that the browser take the code html and the part of twig that in this momen is the "{{ path(~~~~~) }}"

I make a return where i send the variable called "$menustr" and after use the expresion "raw" for the html code but this dont make effective the twig code.

This is te return:

return $this->render('::menu.html.twig', array('menu' => $menustr));

and here is the template content:

{{ menu | raw }}

Why do you mix twig and php templates? Your should go with one of them. — ferdynator
– ferdynator, Commented Nov 25, 2013 at 17:39

Wouter J · Accepted Answer · 2013-11-26 21:57:05Z

2

Twig can't render strings containing twig. There is not something like an eval function in Twig^1..

What you can do is moving the path logic to the PHP stuff. The router service can generate urls, just like the path twig function does. If you are in a controller which extends the base Controller, you can simply use generateUrl:

$menuString .= '<li><a href="'.$this->generateUrl($actual['direction'].'">'. $actual['nombre'] .'</a></li>';

return $this->render('::menu.html.twig', array(
    'menu' => $menuString,
));

Also, when using menu's in Symfony, I recommend to take a look at the KnpMenuBundle.

EDIT: ^1. As pointed by @PepaMartinec there is a function which can do this and it is called template_from_string

edited Nov 26, 2013 at 21:57

answered Nov 25, 2013 at 21:16

Wouter J

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Pepa Martinec · Accepted Answer · 2013-11-26 08:44:47Z

2

You can render Twig template stored in a varible using the template_from_string function.

answered Nov 26, 2013 at 8:44

Pepa Martinec

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Kamil Adryjanek · Accepted Answer · 2013-11-26 09:00:51Z

0

Check this bundle: https://github.com/LaKrue/TwigstringBundle This Bundle adds the possibility to render strings instead of files with the Symfony2 native Twig templating engine:

$vars = array('var'=>'x');
// render example string
$vars['test'] = $this->get('twigstring')->render('v {{ var }} {% if var is defined %} y {% endif %} z', $vars);
// output
v x y z

In your case i would be:

return $this->render('::menu.html.twig', array(
    'menu' => $this->get('twigstring')->render($menustr, $vars)
));

answered Nov 26, 2013 at 9:00

Kamil Adryjanek

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