The easiest and fastest way to update fields in Drupal. Provides a batch processing service to copy values from one or more field sources to a target field.

Features

Field mappings handled via configuration entities: entity_type, bundle, field_target, mappings
Service to batch update field value based on configuration
Can map to ANY field type from multiple field source values from the same entity.
Supports custom default input and explicit NULL for values.
Multi-lingual support.
Entity reference revisions (ie; Paragraphs) supported as a single source field option.
Eligible field mappings matched by target field schema.

Quick start

Add a new field updater at /admin/config/field-updater
Select: Entity type, Bundle, and Target field
Select: Source field (optional) if you want to copy from an entity_reference_revisions field type (ie; paragraphs).
Save the form and add mappings at /admin/config/field-updater/{id}/mappings

Drush commands
drush fu-list - return a list of available updaters
drush fu-update {id} - run an updater with argument of updater id.

Example Update Hook

/**
 * Runs the FieldUpdaterService for the 'update_field_tags' config entity.
 */
function my_module_update_10001() {
  // Get the FieldUpdaterService.
  $updater_service = \Drupal::service('field_updater.updater');
  $updater_service->updateEntities('update_field_tags');
}

Recommended modules/libraries

Custom Field - This module is an optimized alternative to paragraphs & blocks and field_updater module will provide the ability to copy existing values from other fields to this field type.

Similar projects

Bulk Update Fields - Designed to work with views as an action. Our module is simpler in scope and allows to define the mappings in separate configuration entities that can be run via update hooks and Drush commands by simply passing the config id as an argument.

Feeds - The feeds module provides functionality to import data from various sources to create new entities or update existing entities from data source based on a unique mapping id. The field_updater module will however fill the gap of being able to update fields from already existing values on the same entity and eliminate the need for custom update hooks to handle the batch processing.

Field Updater Service

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