Twig File Checklist

Coding Standards

Put one (and only one) space after the start of a delimiter ({{, {%, and {#) and before the end of a delimiter (}}, %}, and #}):

{{ foo }}
{# comment #}
{% if foo %}{% endif %}

When using the whitespace control character, do not put any spaces between it and the delimiter:

{{- foo -}}
{#- comment -#}
{%- if foo -%}{%- endif -%}

Put one (and only one) space before and after the following operators: comparison operators (==, !=, <, >, >=, <=), math operators (+, -, /, *, %, //, **), logic operators (not, and, or), ~, is, in, and the ternary operator (?:):

{{ 1 + 2 }}
{{ foo ~ bar }}
{{ true ? true : false }}

Put one (and only one) space after the : sign in hashes and , in arrays and hashes:

{{ [1, 2, 3] }}
{{ {‘foo’: ‘bar’} }}

Do not put any spaces after an opening parenthesis and before a closing parenthesis in expressions:

{{ 1 + (2 * 3) }}

Do not put any spaces before and after string delimiters:

{{ ‘foo’ }}
{{ “foo” }}

Do not put any spaces before and after the following operators: |, ., .., []:

{{ foo|upper|lower }}
{{ user.name }}
{{ user[name] }}
{% for i in 1..12 %}{% endfor %}

Do not put any spaces before and after the parenthesis used for filter and function calls:

{{ foo|default(‘foo’) }}
{{ range(1..10) }}

Do not put any spaces before and after the opening and the closing of arrays and hashes:

{{ [1, 2, 3] }}
{{ {‘foo’: ‘bar’} }}

Use lower cased and underscored variable names:

{% set foo = ‘foo’ %}
{% set foo_bar = ‘foo’ %}

Indent your code inside tags (use the same indentation as the one used for the target language of the rendered template):

{% block foo %}
{% if true %}
true
{% endif %}
{% endblock %}