diff options
Diffstat (limited to 'activerecord/lib/active_record/migration.rb')
| -rw-r--r-- | activerecord/lib/active_record/migration.rb | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/migration.rb b/activerecord/lib/active_record/migration.rb index 9287859664..ed0c81b639 100644 --- a/activerecord/lib/active_record/migration.rb +++ b/activerecord/lib/active_record/migration.rb @@ -522,7 +522,10 @@ module ActiveRecord def self.inherited(subclass) # :nodoc: super if subclass.superclass == Migration - subclass.include Compatibility::Legacy + raise StandardError, "Directly inheriting from ActiveRecord::Migration is not supported. " \ + "Please specify the Rails release the migration was written for:\n" \ + "\n" \ + " class #{self.class.name} < ActiveRecord::Migration[4.2]" end end |