数据迁移脚本

classes = %w(Call City Province Tag)
classes.each do |obj_name|
  obj = Object.const_get(obj_name)
  obj.establish_connection :production
  models = obj.all.to_a
  obj.establish_connection :development
  ActiveRecord::Base.transaction do 
    models.each do |model|
      obj.create(model.attributes)
    end
  end
end