028423c2f5
This makes it possible to test migration on the schema this migration was written for, without a need to specify a previous schema version manually.
29 lines
649 B
Ruby
29 lines
649 B
Ruby
module MigrationsHelpers
|
|
def table(name)
|
|
Class.new(ActiveRecord::Base) { self.table_name = name }
|
|
end
|
|
|
|
def migrations_paths
|
|
ActiveRecord::Migrator.migrations_paths
|
|
end
|
|
|
|
def table_exists?(name)
|
|
ActiveRecord::Base.connection.table_exists?(name)
|
|
end
|
|
|
|
def migrations
|
|
ActiveRecord::Migrator.migrations(migrations_paths)
|
|
end
|
|
|
|
def previous_migration
|
|
migrations.each_cons(2) do |previous, migration|
|
|
break previous if migration.name == described_class.name
|
|
end
|
|
end
|
|
|
|
def migrate!
|
|
ActiveRecord::Migrator.up(migrations_paths) do |migration|
|
|
migration.name == described_class.name
|
|
end
|
|
end
|
|
end
|