Getting data from multidimensional arrays (render array) in twig

Question

I have a render array for a form in my D7 module that looks like this:

'form' => 
  array
    '#id' => string 'demo-form' (length=9)
    '#action' => string '/sprint07/' (length=10)
    'name' => 
      array
        '#title' => string 'Username' (length=8)
        '#maxlength' => int 13
        '#size' => int 15
        '#type' => string 'textfield' (length=9)
        '#required' => boolean true
        '#input' => boolean true
        '#autocomplete_path' => boolean false
   ... snip ...

I'm using twig-for-drupal to create a theme, but I can't seem to get the values back, I've tried {{ form['name']['#type'] }}, {{ form.name.#type }}, {{ form.name['#type'] }} and so on, but they all come back blank.

Other fields such as form['#action'] works fine, so how should I access the information more than one array in? I can't change the module too much as the php template in its native state uses render(form);

-- Update --

Added some more debugging to this, and seems that I can use {{ form|dump('v') }} to show me the whole array as above, but when I do {{ form.name|dump('v') }} I just get a string, which I assume means that twig is automatically detecting its a render array, and "helpfully" converting it for me.. So I guess that makes my question: how do I turn off the auto-rendering?

Igor Mancos · Accepted Answer · 2012-12-28 09:50:39Z

1

"name" sub array don't contain the "#id" key.

try if work

{{ form.name.#title }}

answered Dec 28, 2012 at 9:50

Igor Mancos

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CaffeinatedDave Over a year ago

id was a bad example, I have the same problem for the keys that do exist as well.

CaffeinatedDave · Accepted Answer · 2012-12-28 17:58:43Z

Turns out it isn't currently possible to do this on a case-by-case basis, TFD is currently set up to auto-render anything it thinks is a render array, and to turn this off you need to set autorender to FALSE in twig_get_instance(). I've tried this myself however and it still seems to be turning the array into a string, so this could be a bug within TFD, or I just don't understand the usage, which is equally, if not more, likely.

From ReneB's sandbox:

Autorender

This version of the TWIG engine uses auto render to prevent themers get RSI from typing {{node.field_somefield|render}} for every single field they want to render from the render array (of doom) so the can safely type {{node.field_something}}

On rendering of the compiled template TFD check if the called variable is a string, callable or array. If it's a string it simple does echo $string, if it's a callable it return a proper method() for it. And if it's an array, it assumes it's a renderable array and maps it to the render($string); method of drupal.

This way the objects hidden with hide() are respected.

To turn this is for now, you have to set autorender to FALSE in the twig_get_instance() method of twig.engine.

I'am working on a {% noautorender %} {% end noautorender %} block structure.

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