Rails: Using OmniAuth (FB authorization), Reading Data From Facebook Hash - ruby-on-rails

Question

Using OmniAuth, I successfully fetched the hash data from Facebook: stored in "auth"
# extra=#] last_name="Jordan" link="http://www.facebook.com/michael" locale="en_US" middle_name="Ball" name="Michael Jordan" quotes="\"lalala\"\n\n\"lala\"" timezone=9 updated_time="2011-09-01T20:25:58+0000" username="mjordan82" verified=true>> info=# verified=true> provider="facebook" uid="123456879">
In User Model, I do as follows:
def self.create_with_omniauth(auth)
create! do |user|
user.provider = auth["provider"]
user.uid = auth["uid"]
user.name = auth["name"]
end
end
When I checked the database, I only got provider and uid. User.name row was empty. From testing, I figured out I couldn't store other data than provider and uid. For example, user.name = auth["provider"] or user.name = auth["uid"] stored with no problem, but when I tried something like user.name = auth["timezone"] or user.name = auth["last_name"], nothing was stored in the variable. Anyone know how to fix this? I also tried user.name = auth["user_info"]["name"], but it returned an error.
I am not sure why user.name = auth["name"] does not store anything. In other words, why is auth["name"] not "Michael Jordan" in this case?

Answer 1

The key was this: I was accessing the auth hash in a wrong way. The answer is you do
user.name = auth["info"]["name"]
Here's detailed information about the Auth Hash:
:provider => 'facebook',
:uid => '1234567',
:info => {
:nickname => 'jbloggs',
:email => 'joe#bloggs.com',
:name => 'Joe Bloggs',
:first_name => 'Joe',
:last_name => 'Bloggs',
:image => 'http://graph.facebook.com/1234567/picture?type=square',
:urls => { :Facebook => 'http://www.facebook.com/jbloggs' },
:location => 'Palo Alto, California',
:verified => true
},
:credentials => {
:token => 'ABCDEF...', # OAuth 2.0 access_token, which you may wish to store
:expires_at => 1321747205, # when the access token expires (it always will)
:expires => true # this will always be true
},
:extra => {
:raw_info => {
:id => '1234567',
:name => 'Joe Bloggs',
:first_name => 'Joe',
:last_name => 'Bloggs',
:link => 'http://www.facebook.com/jbloggs',
:username => 'jbloggs',
:location => { :id => '123456789', :name => 'Palo Alto, California' },
:gender => 'male',
:email => 'joe#bloggs.com',
:timezone => -8,
:locale => 'en_US',
:verified => true,
:updated_time => '2011-11-11T06:21:03+0000'
}
source: https://github.com/mkdynamic/omniauth-facebook
This is why I could access "provider" and "uid" with simply auth["provider"], and I needed to do
auth["info"]["name"]
to access the name information. Similarly, to get the user's timezone, you could do
auth["extra"]["timezone"]