A small gem for copying OmniAuth information into models

class FacebookProfile
  include CopiesOmniauth

  attr_accessor :email
  attr_accessor :first_name
  attr_accessor :last_name
  attr_accessor :token
  attr_accessor :uid

  copies_omniauth :attributes => { :email => %w(info email),
                                   :first_name => %w(info first_name),
                                   :last_name => %w(info last_name)
                                 }
end

f = FacebookProfile.new_from_omniauth(omniauth)

The copies_omniauth method takes a hash with two keys :options and :attributes

• :overwrite Always overwrite information (default: true)
• :secret_attribute The attribute on the class used to store OmniAuth's secret (default: :secret)
• :skip_provider_check Do not verify the OmniAuth provider matches the model (default: false)
• :token_attribute The attribute on the class used to store OmniAuth's token (default: :token)
• :uid_attribute The attribute on an instance used to store OmniAuth's uid (default: :uid)
• :provider_name CopiesOmniauth will guess the expected OmniAuth provider from the class name by chopping "Provider" off the end of the name. To override this behavior, set the :provider_name option.

Copies OmniAuth always copies secret, token, and uid if setters are present on the model.

The :attributes parameter tells CopiesOmniauth which attributes to set on an instance and how to find their values in the OmniAuth hash. Keys of the parameter represent instance attributes and their values represent a path in the OmniAuth hash. Given the following OmniAuth hash:

{ "provider" => "twitter",
  "uid"      => "10223402",
  "info"     => { "name" => "Dean Brundage",
                  "email" => "dean@deanbrundage.com",
                  "nickname" => "brundage",
                  "urls" => [ "blog" => "http://blog.deanbrundage.com" ]
                  ....
                }
 "credentials" => { "token" => "....",
                    "secret" => "....",
                    ....
                  }
}

And given a model:

class TwitterProfile
  attr_accessor :real_name
end

To copy the "name" attribute into your model's "real_name" attribute:

copies_omniauth :attributes => { :real_name => ["info", "name"] }

This traverses the OmniAuth hash, sending info, then name and stores the value in the model's real_name attribute

copies_omniauth Configuration macro

new_from_omniauth(omniauth_hash) Calls new, then copy_from_omniauth(omniauth_hash)

create_from_omniauth(omniauth_hash) Calls new_from_omniauth(omniauth_hash) then save -- useful for ActiveRecord models

copy_from_omniauth(omniauth_hash) Copies values from omniauth_hash into the instance