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class

ActiveRecord::SchemaMigration

v7.0.0 - Show latest stable - Superclass: ActiveRecord::Base

This class is used to create a table that keeps track of which migrations have been applied to a given database. When a migration is run, its schema number is inserted in to the `SchemaMigration.table_name` so it doesn’t need to be executed the next time.

Files

  • activerecord/lib/active_record/schema_migration.rb