Get extra from omniauth-facebook.

[alain-andre]

Hi there, I'm trying to get Facebook birthday of the user identifying to save it in my User but I don't get the data.

I have set my config/initializers/omniauth.rb

Rails.application.config.middleware.use OmniAuth::Builder do
  provider :facebook, ENV['FACEBOOK_KEY'], ENV['FACEBOOK_SECRET'], image_size: 'large', scope: 'email,user_birthday'
end

I have seen in omniauth-facebook that they collect all infos in https://github.com/mkdynamic/omniauth-facebook/blob/master/lib/omniauth/strategies/facebook.rb with this code

extra do
  hash = {}
  hash['raw_info'] = raw_info unless skip_info?
  prune! hash
end

But I never get it in request.env['omniauth.auth'] in OmniauthCallbacksController, I only get the info.

How can I get the extra ?

[alain-andre]

Ok, got it to work.

I had to over write 2 functions in OmniauthCallbacksController :

# intermediary route for successful omniauth authentication. omniauth does
# not support multiple models, so we must resort to this terrible hack.
def redirect_callbacks
  # derive target redirect route from 'resource_class' param, which was set
  # before authentication.
  devise_mapping = [request.env['omniauth.params']['namespace_name'],
                    request.env['omniauth.params']['resource_class'].underscore.gsub('/', '_')].compact.join('_')
  redirect_route = "#{request.protocol}#{request.host_with_port}/#{Devise.mappings[devise_mapping.to_sym].fullpath}/#{params[:provider]}/callback"

  # preserve omniauth info for success route. ignore 'extra' in twitter
  # auth response to avoid CookieOverflow.
  session['dta.omniauth.auth'] = (params[:provider] == 'twitter') ? request.env['omniauth.auth'].except('extra') : request.env['omniauth.auth']
  session['dta.omniauth.params'] = request.env['omniauth.params']

  redirect_to redirect_route
end

protected

  # break out provider attribute assignment for easy method extension
  def assign_provider_attrs(user, auth_hash)
    user.assign_attributes({
      nickname: auth_hash['info']['nickname'],
      name:     auth_hash['info']['name'],
      image:    auth_hash['info']['image'],
      email:    auth_hash['info']['email'],
      birthday: Date.strptime(auth_hash['extra']['raw_info']['birthday'], '%m/%d/%Y'),
      gender: auth_hash['extra']['raw_info']['gender']
    })
  end

I think this line 20 should be session['dta.omniauth.auth'] = (params[:provider] == 'twitter') ? request.env['omniauth.auth'].except('extra') : request.env['omniauth.auth'] as it says it removes extra only for Twitter.

Now I'm wondering if I have a better option to include those extra informations inside my User model than over writing a protected assign_provider_attrs method. Do I ?

[zachfeldman]

Hi there @alain-andre ,

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Hope all is well.