Add rake db:forward - opposite of db:rollback [#768 state:resolved]

Example:
  rake db:forward # performs the next migration
  rake db:forward STEP=4 # performs the next 4 migrations

Signed-off-by: Pratik Naik <pratiknaik@gmail.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/railties/lib/tasks/databases.rake b/railties/lib/tasks/databases.rake
index 0d4d658315..b00a789974 100644
--- a/railties/lib/tasks/databases.rake
+++ b/railties/lib/tasks/databases.rake
@@ -172,6 +172,13 @@ namespace :db do
     Rake::Task["db:schema:dump"].invoke if ActiveRecord::Base.schema_format == :ruby
   end
 
+  desc 'Pushes the schema to the next version. Specify the number of steps with STEP=n'
+  task :forward => :environment do
+    step = ENV['STEP'] ? ENV['STEP'].to_i : 1
+    ActiveRecord::Migrator.forward('db/migrate/', step)
+    Rake::Task["db:schema:dump"].invoke if ActiveRecord::Base.schema_format == :ruby
+  end
+
   desc 'Drops and recreates the database from db/schema.rb for the current environment and loads the seeds.'
   task :reset => [ 'db:drop', 'db:setup' ]