#Field API

Articles

Field API

Custom fields can define a database schema and customize the form and display. Fields are implemented as plugins. FieldType...

Commerce Entity Select Widget

Drupal Commerce has a field widget, Commerce Entity Select that does some interesting things with the field and form API. Source...

Issues

Revaluate the concept of 'extra fields'

https://www.drupal.org/project/drupal/issues/1954188

Debate on usage of entity extra fields.

Modules

Computed Field

https://www.drupal.org/project/computed_field

Define computed fields for entities.

Resources

No data, no problem: computed fields made simple

Link

https://www.noreiko.com/blog/no-data-no-problem-computed-fields-made-simple

Blog post about computed fields code.

Dynamic/Virtual field values using computed field property classes

Link

https://www.drupal.org/docs/drupal-apis/entity-api/dynamicvirtual-field-values-…

Pseudo/extra field documentation.

Various ways of updating field values in Drupal 8 and 9

Link

https://gorannikolovski.com/blog/various-ways-updating-field-values-drupal-8-an…

Shorthand for setting field values.