Markup Twig - Twig Support for Markup Fields

Extension module to Markup Field module to use Twig in Markup fields.

How to use:
* Install this module like any other, see this documentation.
* Set 'Administer markup fields' permission for trusted roles
* Add a markup field to your entity
* Use twig syntax in the markup field
* Select "Markup Twig" as
* Field widget (admin/structure/types/manage/XXX/form-display)
* Field formatter (admin/structure/types/manage/XXX/display) in your field administration. Otherwise twig will be rendered as plain text.



Dependencies:
* Markup module

Typical use-cases & examples Still TODO, see #3026770: Provide typical examples and use-cases on the module page You may help and suggest snippets:

Display all available twig variables
{{ kint() }} Requires twig debug to be enabled, see Debugging Twig templates We're planning to provide a smarter solution: #3026576: Integrate with codemirror_editor

Get URL from file / image field
{{ node.field_name.0.entity.uri.value }} ("node" may be "user", "term", ... it's the dynamic name of the entity type)

Render image from image field (requires Twig Tweak)
{{ node.field_name.0.entity.uri.value|image_style('thumbnail') }} ("node" may be "user", "term", ... it's the dynamic name of the entity type)

Render an other field from the entity (requires Twig Tweak)
{{ node.field_name|view }} ("node" may be "user", "term", ... it's the dynamic name of the entity type)

Render entity title
{{ node.title }} ("node" may be "user", "term", ... it's the dynamic name of the entity type)

Extensions Favourite: You may want to use the famous Twig Tweak module to enhance twig with further filters and functionalities, e.g. {{ node.field_tags|view}} (see https://www.drupal.org/docs/8/modules/twig-tweak/cheat-sheet-8x-2x) Alternatively: Twig Render This may be very useful if you'd like to render a field from the given entity by simply writing: {{ node.field_tags | renderThis }} (see https://www.drupal.org/docs/8/modules/twig-render-this/tutorial) Additionally: Twig Extensions: Adds further filters and functionalities from the twig extensions lib:

Alternatives:
* Field Token Value: Could be used for simple cases where Computed Field is too heavy.
* Computed field: The sladge hammer for dynamic fields
* Extra field: Provides extra fields programmatically via plugin. Extra fields do not store data and do not have a field widget. Extra fields typically combine existing entity data and format it for display.
* Twig field: Provides twig syntax field in the entity create / edit form (like body field, not on meta-level).
* Filter Twig: Provides an input filter with twig support

Important: This module adds a permission "Administer markup fields". Do not allow untrusted users to edit Twig templates as it may cause security implications. Hopefully this functionality will be integrated into Markup field one day #3026539: Add "administer markup fields" permission.

Development proudly sponsored by German Drupal Friends & Companies: webks: websolutions kept simple (https://www.webks.de) and DROWL: Drupalbasierte Lösungen aus Ostwestfalen-Lippe (OWL), Germany (https://www.drowl.de)