class AssociateRuns < ActiveRecord::Migration[5.1] def up add_column :examples, :duration, :numeric, null: false, default: 0 remove_column :runs, :total_time Run.all.find_each do |r| r.update_attributes id: r.rspec_run end count = Example.all.size Example.all.find_each do |e| e.update_column :duration, e.properties['duration'].to_f count -= 1 puts count end end def down remove_column :examples, :duration add_column :runs, :total_time, :integer end end