get first_name and last_name fields from facebook omniauth

Question

I am now implementing omniauth feature into my app. Everything works fine except that i cant get the first and last name from the facebook. Here is my model code.

Answer 1

After some fiddling around i found the solution. Now i think we have to explicitly require the fields we require. For me the fix is just to add first_name and last_name to facebook.

In my initializers i added first_name and last_name to info fields.

info_fields: 'email, first_name, last_name'

Update

My full config file will look like this now

   config.omniauth :facebook, ENV["FACEBOOK_APP_ID"], ENV["FACEBOOK_SECRET"], scope: 'email', info_fields: 'email, first_name, last_name'

Answer 2

From checking the Facebook docs, the first_name and last_name fields are both part of the public profile so your permissions should be fine.

No idea if this would work (in fact, I would kind of hope it doesn't), but in the implementation we've got working in production at the moment we're using Hash accessors instead of methods. So:

new(
  first_name: oauth_data["info"]["first_name"],                  
  last_name:  oauth_data["info"]["last_name"],     
  ...

Given your email etc fields are getting set correctly, I'd be surprised if trying that works, but it might be worth a shot.

Failing that, have you got any validations or before_create callbacks which could be interfering somehow?

Answer 3

Ran into this issue while designing the OAuth flow for an app that was using Devise + omniauth-facebook.

Using the public_profile scope, you get back a name attribute on the auth hash. request.env["omniauth.auth"]

My issue is that a user has one profile and it is autosaved ( user is required to enter a first name and last name at sign up which is validated on the profile model)

Solution: Create a name parsing method in your omniauth services model, which you can pass the request.env["omniauth.auth"]["info"]["name"] as an argument.

# auth hash returns a name like "John Doe Smith"
def parse_name_from_string(ful_name_string) 
  
   name_array = name_string.split(" ")  # break apart the name

   # I chose to return a PORO so i can do something like parsed_user_name_from_facebook_auth.first_name
   {
     last_name: name_array.pop,
     first_name: name_array.join(" ")
   }
end