template Archives - Houssem's blog

Advanced example of using the “for” and “loop” in twig

By Houssem on 25 September 2013 in Twig

This example illustrate how to use a nested “for” in twig also the use of a loop instruction:

<ul>     
  {% for child in childs %}
    <li>
      <span>{{child.name}}</span>
      <ul style="list-style: square;padding-left: 20px;">
        {% for item in items[child.id] %}
          {% if loop.index < 4 %}
            <li><span>{{ item.title }}</span></li>
          {% else %}
            <li style="display:none;"><span>{{ item.title }}</span></li>
          {% endif %}
        {% endfor %}
      </ul>
    </li>     
  {% endfor %}
</ul>

<ul>

{% for child in childs %}

<li>

{{child.name}}

{% for item in items[child.id] %}

{% if loop.index < 4 %}

<li>{{ item.title }}</li>

{% else %}

<li style="display:none;">{{ item.title }}</li>

{% endif %}

{% endfor %}

</ul>

</li>

{% endfor %}

</ul>

Inside of a for loop block you can access some special variables: Variable Description loop.index The current iteration of the loop. (1 indexed) loop.index0 The current iteration of the loop. (0 indexed) loop.revindex The number of iterations from […]

Enable the debug extension in Twig

By Houssem on 24 September 2013 in Twig

To enable the debug function in twig. You have to modify the file app/config_dev.yml by adding the code below :

services:
    twig.extension.debug:
        class: Twig_Extensions_Extension_Debug
        tags: [ { name: 'twig.extension' } ]

services:

twig.extension.debug:

class: Twig_Extensions_Extension_Debug

tags: [ { name: 'twig.extension' } ]

Then in your twig file (ex : test.html.twig) : {% debug %} => Display all variables assigned to the template engine for the view in question {% debug var %} => Displays information about […]

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