Migrate Drupal

Migrate Drupal is a helper module to help with the migration of Drupal sites (e.g. Drupal 5 -> Drupal 6), when using the migrate module. Specifically (at the moment) for filefields.

** Currently requires Migrate Extra to be patched with #731992: multi-value filefields **

Why?

The migrate module rocks, but it has problems with many to many relationships, like nodes to files. As Drupal to Drupal conversions are fairly common, we think this is a use case worth simplifying.

Approach

As we know the structure of a Drupal database, we can use that to make assumptions about how the tables are arranged and therefore make it MUCH simpler to migrate.

TODO

• GUI

Configuration

There is no GUI (yet), so its all in code, you have to do 3 things to set up. Currently it requires a patch to migrate extras #731992: multi-value filefields.

1. NODE_MIGRATE_FILE_PATH
   This is a path from your site root, to the folder where your keeping the old files directory. Note, it expects the files to be in a folder called files e.g.
   NODE_MIGRATE_FILE_PATH . 'files/images/foobar.jpg'
2. NODE_MIGRATE_DEFAULT_DB / NODE_MIGRATE_OLD_DB
   The names used for the databases in settings.php
3. The node_migrate_field_mappings() function This is where the good stuff happens, its a structured array as follows.
   

   $mappings[field_type][field_name_on_new_site][X]
                                                 |- [table] = table in old db
                                                 |- [col] = data column (e.g. the fid)
   

   There is a sample in the module itself.

Required Modules:

• Migrate
• Migrate Extras (with patch #731992: multi-value filefields)
• The module(s) you are importing to :)

Created by OpenlyConnected