class MigrateProjectTags < ActiveRecord::Migration[4.2]
def up
ActsAsTaggableOn::Tagging.where(taggable_type: 'Project', context: 'labels').update_all(context: 'tags')
end
def down
ActsAsTaggableOn::Tagging.where(taggable_type: 'Project', context: 'tags').update_all(context: 'labels')