migrate_file_to_media-8.x-1.x-dev/src/Drush/Templates/media-migration-step2.yml.twig

# This migration links the newly created media entities with entity reference field on the target bundle.

id: {{ plugin_id }}_step2
label: {{ plugin_label }} Mapping
migration_group: {{ migration_group }}
source:
  plugin: media_content_entity:{{ entity_type }}
  bundle: {{ source_bundle }}
  include_revisions: {{ include_revisions ? 'true' : 'false' }}
  include_translations: {{ has_translation ? 'true' : 'false' }}
  fields_not_empty:
  {% for field_name in source_field_name %}
    - {{ field_name }}
  {% endfor %}

destination:
{% if include_revisions %}
  plugin: media_entity_revision:{{ entity_type }}
{% else %}
  plugin: entity:{{ entity_type }}
{% endif %}
{% if has_translation %}  translations: true{% endif %}

process:
  {{ id_key }}: {{ id_key }}
{% if include_revisions %}
  {{ vid_key }}: {{ vid_key }}
{% endif %}

  type:
    plugin: default_value
    default_value: {{ source_bundle }}

{% for field_name in source_field_name %}
  {{ field_name }}_media:
    plugin: file_id_lookup
    source: {{ field_name }}
    migration: {{ plugin_id }}_step1
    no_stub: true
{% endfor %}

{% if has_translation %}
  langcode: langcode
{% endif %}

migration_dependencies:
  optional:
  - {{ plugin_id }}_step1

dependencies:
  module:
    - {{ machine_name }}
  enforced:
    module:
      - {{ machine_name }}