twig if defined code example

Example 1: twig is set variable

{# defined works with variable names #}
{% if foo is defined %}
    ...
{% endif %}

{# and attributes on variables names #}
{% if foo.bar is defined %}
    ...
{% endif %}

{% if foo['bar'] is defined %}
    ...
{% endif %}

Example 2: twig if

{% if users %}
    

        {% for user in users %}
            
{{ user.username|e }}
        {% endfor %}
    
{% endif %}

Example 3: twig if

{% if online == false %}
    
Our website is in maintenance mode. Please, come back later.
{% endif %}

Example 4: twig if

{% if not user.subscribed %}
    
You are not subscribed to our mailing list.
{% endif %}