Facebook OAuth2 strategy for Überauth.
Setup your application at Facebook Developers.
Add
:ueberauth_facebookto your list of dependencies inmix.exs:defdepsdo[{:ueberauth_facebook,"~> 0.8"}]end
Add the strategy to your applications:
defapplicationdo[applications: [:ueberauth_facebook]]end
Add Facebook to your Überauth configuration:
config:ueberauth,Ueberauth,providers: [facebook: {Ueberauth.Strategy.Facebook,[]}]
Update your provider configuration:
config:ueberauth,Ueberauth.Strategy.Facebook.OAuth,client_id: System.get_env("FACEBOOK_CLIENT_ID"),client_secret: System.get_env("FACEBOOK_CLIENT_SECRET")
Include the Überauth plug in your controller:
defmoduleMyApp.AuthControllerdouseMyApp.Web,:controllerplugUeberauth...end
Create the request and callback routes if you haven't already:
scope"/auth",MyAppdopipe_through:browserget"/:provider",AuthController,:requestget"/:provider/callback",AuthController,:callbackend
Your controller needs to implement callbacks to deal with
Ueberauth.AuthandUeberauth.Failureresponses.
For an example implementation see the Überauth Example application.
Depending on the configured URL you can initialize the request through:
/auth/facebook
Or with options:
/auth/facebook?scope=email,public_profile
By default the requested scope is "public_profile". Scope can be configured either explicitly as a scope query value on the request path or in your configuration:
config:ueberauth,Ueberauth,providers: [facebook: {Ueberauth.Strategy.Facebook,[default_scope: "email,public_profile,user_friends"]}]Additionally you can now specify the display param to pass to Facebook:
config:ueberauth,Ueberauth,providers: [facebook: {Ueberauth.Strategy.Facebook,[default_scope: "email,public_profile,user_friends",display: "popup"]}]display can be the following values: page (default), async, iframe, popup, touch, wap
Starting with Graph API version 2.4, Facebook has limited the default fields returned when fetching the user profile.
Fields can be explicitly requested using the profile_fields option:
config:ueberauth,Ueberauth,providers: [facebook: {Ueberauth.Strategy.Facebook,[profile_fields: "name,email,first_name,last_name"]}]See Graph API Reference > User for full list of fields.
Please see LICENSE for licensing details.