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class AddEventsRelatedColumnsToMergeRequestMetrics < ActiveRecord::Migration[4.2]
include Gitlab::Database::MigrationHelpers
DOWNTIME = false
disable_ddl_transaction!
def up
change_table :merge_request_metrics do |t|
t.references :merged_by, references: :users
t.references :latest_closed_by, references: :users
end
add_column :merge_request_metrics, :latest_closed_at, :datetime_with_timezone
add_concurrent_foreign_key :merge_request_metrics, :users,
column: :merged_by_id,
on_delete: :nullify
add_concurrent_foreign_key :merge_request_metrics, :users,
column: :latest_closed_by_id,
on_delete: :nullify
end
def down
if foreign_keys_for(:merge_request_metrics, :merged_by_id).any?
remove_foreign_key :merge_request_metrics, column: :merged_by_id
end
if foreign_keys_for(:merge_request_metrics, :latest_closed_by_id).any?
remove_foreign_key :merge_request_metrics, column: :latest_closed_by_id
end
remove_columns :merge_request_metrics,
:merged_by_id, :latest_closed_by_id, :latest_closed_at
end
end
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