Better ActiveRecord

Invite.rb

class Invite < ActiveRecord::Base
  belongs_to :user
  def accept!(user)
    self.user = user
    self.accepted = true 
    Membership.create!(:user => user) 
    save!
  end
end


# issue1 if set accepted = true, but doesn't set user, how to do?
# then create Memvership in after_save

# more use validation to valid model, also validating composite case.

class Invite < ActiveRecord::Base
  belongs_to :user
  validates_presence_of :user_id, :if => :accepted? 
  after_save :create_membership_on_accept
  private
  def create_membership_on_accept
    if accepted? && accepted_changed?
      Membership.create!(:user => user) end
  end 
end