{"name":"gist: 894697","desc":"Migrating from a has_one relationship to a has_and_belongs_to_many","actor":"jmccartie","url":"https://gist.github.com/894697","snippet":"class RemoveCategoryIdFromItem < ActiveRecord::Migration\n  def self.up\n    # Migrate items from has_many","actor_gravatar":"544e2e76286098a2c64c3638401d2191","action":"update"}