Make project_id nullable

1 files changed, 21 insertions, 0 deletions

diff --git a/db/migrate/20160616084004_change_project_of_environment.rb b/db/migrate/20160616084004_change_project_of_environment.rb
new file mode 100644
index 00000000000..cc1daf9b621
--- /dev/null
+++ b/db/migrate/20160616084004_change_project_of_environment.rb
@@ -0,0 +1,21 @@
+# See http://doc.gitlab.com/ce/development/migration_style_guide.html
+# for more information on how to write migrations for GitLab.
+
+class ChangeProjectOfEnvironment < ActiveRecord::Migration
+  include Gitlab::Database::MigrationHelpers
+
+  # When using the methods "add_concurrent_index" or "add_column_with_default"
+  # you must disable the use of transactions as these methods can not run in an
+  # existing transaction. When using "add_concurrent_index" make sure that this
+  # method is the _only_ method called in the migration, any other changes
+  # should go in a separate migration. This ensures that upon failure _only_ the
+  # index creation fails and can be retried or reverted easily.
+  #
+  # To disable transactions uncomment the following line and remove these
+  # comments:
+  # disable_ddl_transaction!
+
+  def change
+    change_column_null :environments, :project_id, true
+  end
+end