diff options
Diffstat (limited to 'railties/lib/rails_generator/generators/components/migration/migration_generator.rb')
| -rw-r--r-- | railties/lib/rails_generator/generators/components/migration/migration_generator.rb | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/railties/lib/rails_generator/generators/components/migration/migration_generator.rb b/railties/lib/rails_generator/generators/components/migration/migration_generator.rb index d1f4d4c41b..c830d715bb 100644 --- a/railties/lib/rails_generator/generators/components/migration/migration_generator.rb +++ b/railties/lib/rails_generator/generators/components/migration/migration_generator.rb @@ -2,6 +2,8 @@ class MigrationGenerator < Rails::Generator::NamedBase def manifest record do |m| m.directory File.join('db/migrate') + existing_migrations = Dir.glob("db/migrate/[0-9]*_#{file_name}.rb") + raise "Another migration already exists with the same name" unless existing_migrations.empty? next_migration_number = Dir.glob("db/migrate/[0-9]*.*").size + 1 m.template 'migration.rb', File.join('db/migrate', "#{next_migration_number}_#{file_name}.rb") end |