The `-%}` means to trim whitespace.

See the [Whitespace Control section of the docs][1].


  [1]: https://twig.symfony.com/doc/2.x/templates.html#whitespace-control

I have a `select` element with a few options, but I want some of the options to not be selectable.

Basically it&#39;s like this:

    &lt;select&gt;
        &lt;option&gt; CITY 1 &lt;/option&gt;
        &lt;option&gt; City 1 branch A &lt;/option&gt;
        &lt;option&gt; City 1 branch B &lt;/option&gt;
        &lt;option&gt; City 1 branch C &lt;/option&gt;
        &lt;option&gt; CITY 2 &lt;/option&gt;
        &lt;option&gt; City 2 branch A &lt;/option&gt;
        &lt;option&gt; City 2 branch B &lt;/option&gt;
        ...
    &lt;/select&gt;

So as you can see, I don&#39;t want the cities do be directly selectable, but only the options that come under each city. 

How can it be done that the user can click on `CITY 1` or `CITY 2` but it won&#39;t be selected, so the user is forced to choose one of the branches underneath?

Make some options in a select menu &quot;unselectable&quot;

I&#39;m using (the excellent) Font-Awesome in my site, and it&#39;s working fine, if I use it this way:

    &lt;i class=&quot;icon-home&quot;&gt;&lt;/i&gt;
But (for some reasons) I want to use it in the Unicode way, like:

    &lt;i&gt;&amp;#xf015;&lt;/i&gt;
([Font Awesome&#39;s cheatsheet][1])

But it doesn&#39;t work - the browser shows a square instead.

How do I solve this? 
The CSS path is correct (as the first way of using Font Awesome works).

Edit: I do have the FontAwesome.otf installed.

  [1]: http://fortawesome.github.io/Font-Awesome/cheatsheet/

Font Awesome &amp; Unicode

When generating a CRUD in a Symfony2 application with Doctrine commands, generated Twig template content is defined within a Twig block this way:

    {% block body -%}
    
    {% endblock %}

What does the hyphen in `-%}` mean? It works fine without the hyphen and I could not find anything similar in the Twig documentation.



What does the hyphen mean for a block in Twig like in {% block body -%}?

When generating a CRUD in a Symfony2 application with Doctrine commands, generated Twig template content is defined within a Twig block this way:
<pre><code class="hljs language-css">{% block body -%}

{% endblock %}
</code></pre>
What does the hyphen in <code>-%}</code> mean? It works fine without the hyphen and I could not find anything similar in the Twig documentation.

I am looking to count the number of entries I have in an array in Twig. This is the code I&#39;ve tried:

    {%for nc in notcount%}
    {{ nc|length }}
    {%endfor%}

This however only produces the length of the string of one of the values in the array.

`{{nc}}` will produce an output of all the values of the array (there are 2) but I want the output to be just the number 2 (the count) and not all the information in the array.

Counting the number of elements in array

Is there a generally &quot;good&quot; way to achieve this functionality? I have read about the &#39;use&#39; tag, which seems like the best option so far, but I still don&#39;t like that it wont let me bring in any outside html, only blocks.

I will use the &#39;include&#39; tag in the example below to demonstrate the intent I&#39;m trying to describe.

    #base.html.twig
    {% include &#39;elements/header.html.twig&#39; %}
    {% block content %}{% endblock %}
    {% include &#39;elements/footer.html.twig&#39; %}
    
    #header.html.twig
    &lt;h1&gt;This is my header&lt;/h1&gt;
    {% block page_title %} Default Page Title {% endblock %}
    
    #index.html.twig
    {% extends &#39;layouts/base.html.twig&#39; %}
    {# I want to be able to do this somehow #}
    {% block page_title %} This is my overridden page title {% endblock %}
    {% block content %} here is the index page content {% endblock %}

Overriding blocks within included Twig templates

I would like to define a id attribute on my symfony2 forms.

I&#39;ve tried with this in my twig template: 

    {{ form_start(form, {&#39;id&#39;: &#39;form_person_edit&#39;}) }}

But it seems not working.

Id attribute on form tag symfony

How can i access the loop&#39;s index when i&#39;m in a second loop? like this:

          {% for i in range(0, 3) %}
              {% for j in range(0, 9) %}
               {{ loop1.index + loop2.index }}  // ?
              {% endfor %}
          {% endfor %}



access loop.index when within another loop in twig

Often in coding and templating I need to wrap a certain part of text. Is there any shortcut to wrap the current selection, for example:

    Hello World
    &quot;Hello World&quot;

    Hello World
    {{ trans &#39;Hello World&#39; }}

Im using PhpStorm 7 for Mac and PC. I found something similiar, with: &lt;kbd&gt;ctrl&lt;/kbd&gt;+&lt;kbd&gt;alt&lt;/kbd&gt;+&lt;kbd&gt;j&lt;/kbd&gt; you can wrap with a html-tag but nothing else. Also &lt;kbd&gt;ctrl&lt;/kbd&gt;+&lt;kbd&gt;alt&lt;/kbd&gt;+&lt;kbd&gt;-&lt;/kbd&gt; comments the current selection according to the current file format(php, twig, html, ...)

Content Type	Original Author	Original Content on Stackoverflow
Question	Michaël Perrin	View Question on Stackoverflow
Solution 1 - Twig	Dave Newton	View Answer on Stackoverflow

What does the hyphen mean for a block in Twig like in {% block body -%}?

Twig Problem Overview

Twig Solutions

Solution 1 - Twig

Font Awesome & Unicode

Make some options in a select menu "unselectable"

Attributions