class Marten::DB::Management::Migrations::Reader

• Marten::DB::Management::Migrations::Reader
• Reference
• Object

Overview

Represents a migrations reader.

The migration reader will process all migrations defined by the available apps and all the migrations that were already applied (ie. recorded) for the existing database in order to build a corresponding directed acyclic graph of migrations.

Defined in:

marten/db/management/migrations/reader.cr

Constructors

• .new(connection : Connection::Base | Nil = nil)

Instance Method Summary

• #applied_migrations : Hash(String, Marten::DB::Migration?)
• #apps_with_migrations

  Returns an array of apps that have migrations defined.

• #get_migration(app_config : Apps::Config, migration_name : String) : Migration.class

  Returns a migration class for a specific app config and migration name.

• #graph : Marten::DB::Management::Migrations::Graph
• #latest_migration(app_config : Apps::Config) : Migration.class | Nil

  Returns the latest migration class (if any) for a given app config.

• #replacements : Hash(String, Marten::DB::Migration)

Constructor Detail

Instance Method Detail