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Create a custom Twig filter in Drupal 8


Twig can be extended in many ways; you can add extra tags, filters, tests, operators, global variables, and functions. You can even extend the parser itself with node visitors. In this blog,

I am going to show you how to create new custom twig filters in drupal. For example we are going to create a filter to remove numbers from string, will explain with hello_world module.

Create hello_world folder in modules/custom/ folder with the following files,

String Quotes in YAML File



We all know YAML is "a human friendly data serialization standard for all programming languages". In Drupal 8, the old .INFO files are now gone and have been replaced by YAML files - pronounced “yamel” (rhymes with camel). The following will show the tricks on strings,

Strings : Strings in YAML can be wrapped both in single and double quotes. In some cases, they can also be unquoted:

A string in YAML

'A singled-quoted string in YAML'

"A double-quoted string in YAML"