render-arrays.md

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Render Arrays

Get only Renderable array items

Use case: you are working with a paragraph reference field and need to iterate through ONLY the nested paragraph items.

The easiest and best approach is to use the Twig Tweak module. Once it's installed and enabled you can do this:

{% set renderable_buttons = content.field_buttons|children %}

Other options with 'vanilla' Twig features

{% for key,item in content.field_buttons if key|first != '#' %}
  // Do things with {{item}}
{% endfor %}

This may be better in some scenarios

      {% set renderable_slides = [] %}

      {% for item in carousel_swiper.content|keys %}
        {% if item|slice(0,1) is not same as '#' %}
          {% set renderable_slides = renderable_slides|merge([carousel_swiper.content[item]]) %}
        {% endif %}
      {% endfor %}

In the example above where each item in renderable_slides is a paragraph entity, you can now use the following to access the paragraph entity field values:

{% for item in renderable_slides %}#}
  {{ item['#paragraph'].field_text.value }}
{% endfor %}

Get Key value of a list field