Follow.column_names
=> ["id", "followable_id", "followable_type", "follower_id", "follower_type", "blocked", "created_at", "updated_at"]

class Follow < ActiveRecord::Base

  extend ActsAsFollower::FollowerLib
  extend ActsAsFollower::FollowScopes

  # NOTE: Follows belong to the "followable" interface, and also to followers
  belongs_to :followable, :polymorphic => true
  belongs_to :follower,   :polymorphic => true

  def block!
    self.update_attribute(:blocked, true)
  end

end