Migrate Sourceid

About

This is a helper module when you want to check the source of a migrated Drupal entity on the UI. Using this there is no need to set a custom field to track the old id.

Provides a simple Block with a link to the old Entity of a migrated Entity with the patetrn {OLD_DRUPAL_URL}/node/{sourceid1}.

Currently, it works only for the main Drupal core entities like "node, taxonomy_term, block_content, media, file, user".

Behind the scenes it uses the migration tables to get the sourceid1 with a simple database query.

It is something like a reverse migrate_lookup.

Usage

• Enable the module after you have finished some migrations. The core "migrate" module is required.
• Add a new Block instance of type "Migrate Sourceid" on the Block Layout ("/admin/structure/block").
• You can enable the Block for any entity that has a view page. Eg "/node/*, /taxonomy/term/*"" etc).
• Export config to get the settings yml in the files (an alternative is to override it through settings.php).
• Override the "migrate_sourceid.settings.yml" accordingly.
• For each entity type you can add the migration ids you want to look for.
• Import the new "migrate_sourceid.settings.yml" file.
• Clear caches.

Example of configuration settings

source_url: https://www.example.com
migrations:
  node:
    - d7_node
    - my_custom_csv_migration
    - node_news
    - node_page
    - node_article
  block_content:
    - d7_block_content
  file:
    - d7_file
  media:
    - my_media_file
  taxonomy_term:
    - d7_taxonomy_term
  user:
    - d6_user

ToDo

• Add permissions
• Add a Drupal form to override settings
• Allow to override link texts and prefix
• Create a Drupal service