?> m = Member.find(5322)
=> #<Member id: 5322, validation_level: 5, legacy_id: "31e0e08", openid_url: nil, name: "Subramanya Sastry", email: "sastry@cs.wisc.edu", crypted_password: "4dc64437f5596895c14675e6b266e615", created_at: "2007-05-03 20:52:36", updated_at: "2008-09-03 19:16:50", login: nil, remember_token_expires_at: nil, remember_token: nil, show_email: false, show_in_member_list: false, show_profile: true, valid_email: true, profile_status: "feature", priority: 5, total_reviews: 24, total_answers: 81, total_meta_reviews_received: 3, total_meta_reviewers: 3, total_meta_reviews_given: 1, status: "member", daily_newsletter: true, weekly_newsletter: true, newsletter_format: "html", last_edited_at: "2008-03-11 21:06:04", news_experience: 4, show_news_experience: true, internet_experience: 6, show_internet_experience: true, education_experience: 5, show_education_experience: true, journalism_experience: 1, show_journalism_experience: true, edited_by_member_id: 640, validated_by_member_id: 640, activation_code: nil, activated_at: nil, referred_by: nil, rating: 4.32212, pseudonym: nil, show_affiliations: true, show_favorites: true, preferred_review_form_version: nil, last_validated_at: "2008-03-11 21:06:04", last_active_at: "2008-09-03 19:16:50">
>>
?> m.update_attributes(:invitation_code => "123")
=> true
>> m.invitation_code
=> "123"
>>
?> m.update_attribute(:invitation_code, "456")
=> true
>>
?> m.invitation_code
=> "456"
>>
?> m.update_attribute("invitation_code", "789")
=> true
>>
?> m.invitation_code
=> "789"