Migrating DATA - not just schema, Rails

Question

Sometimes, data migrations are required. As time passes, code changes and migrations using your domain model are no longer valid and migrations fail. What a

Answer 1

Some times 'migrating data' could not be performed as a part of schema migration, like discussed above. Sometimes 'migrating data' means 'fix historical data inconstancies' or 'update your Solr/Elasticsearch' index, so its a complex task. For these kind of tasks, check out this gem https://github.com/OffgridElectric/rails-data-migrations

This gem was designed to decouple Rails schema migrations from data migrations, so it wont cause downtimes at deploy time and make it easy to manage in overall