Purpose: Ridgepole manages database schemas by defining them with Rails DSL and updating the database to match.
Schema workflow: It can export a database schema to a Schemafile, compare schema definitions, and apply changes.
Dry run: The --dry-run option previews schema changes before applying them.
Schema features: The README demonstrates table and column renames, foreign keys, check constraints, indexes, generated columns, and SQL execution.
Database support: The README documents MySQL and PostgreSQL examples and states that SQLite is not supported.
Rails compatibility: The README says Ridgepole v3.1.0 supports Rails 8.1 and v3.0.0 supports Rails 8.0.
Installation: Ridgepole can be added to an application's Gemfile or installed with gem install ridgepole.
Distribution: Ridgepole is distributed as a Ruby gem and the repository identifies its license as MIT.
Table deletion: Dropping tables is skipped by default in Ridgepole v1.0 and later; the README says to pass --drop-table to enable it.
Partitioning: The README states that partitioning is no longer supported from Ridgepole v1.1.0.
Rename behavior: When renamed_from is used on a table, other changes to that table are not detected in the same migration and must be applied in a separate step.
Database compatibility detail: The README advises matching check constraint expressions to the database's exported form to avoid unnecessary migrations.
Price from: Free

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