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| author | Richard Schneeman <richard.schneeman@gmail.com> | 2015-09-15 12:18:13 -0500 |
|---|---|---|
| committer | Richard Schneeman <richard.schneeman@gmail.com> | 2015-09-15 12:18:13 -0500 |
| commit | 005ebe72df7d769ea739c4a17d17d250d98daa42 (patch) | |
| tree | a77693594d1289c6373e433c4f2625441a54ace3 /activerecord/lib/active_record/schema_migration.rb | |
| parent | 49316d8a6357bbb19c2032faa3dfec8f7e0f0253 (diff) | |
| parent | 5c5bc8a5af361d43207ca3f1d321e6feba7d7030 (diff) | |
| download | rails-005ebe72df7d769ea739c4a17d17d250d98daa42.tar.gz rails-005ebe72df7d769ea739c4a17d17d250d98daa42.tar.bz2 rails-005ebe72df7d769ea739c4a17d17d250d98daa42.zip | |
Merge pull request #21623 from schneems/schneems/schema-migration-docs
Doc SchemaMigration class.
Diffstat (limited to 'activerecord/lib/active_record/schema_migration.rb')
| -rw-r--r-- | activerecord/lib/active_record/schema_migration.rb | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/schema_migration.rb b/activerecord/lib/active_record/schema_migration.rb index cb47bf23f7..b384529e75 100644 --- a/activerecord/lib/active_record/schema_migration.rb +++ b/activerecord/lib/active_record/schema_migration.rb @@ -2,7 +2,11 @@ require 'active_record/scoping/default' require 'active_record/scoping/named' module ActiveRecord - class SchemaMigration < 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. + class SchemaMigration < ActiveRecord::Base # :nodoc: class << self def primary_key nil |