here you go , a complete guide for you ,
Applicable version : V10 and above , V9 may work ...
What you need to is the following steps ... ,
*** First activate your Developer mode then you follow the steps ,
1. configure to allow user to sign up using Oauth
then in it , you make sure you fill in the correct value ...
2. configure the Facebook app , now go to your facebook , developer account ,
https://developers.facebook.com , if you do not have , just apply one
pretty straight forward , in it , create an App ,
then you have click on the Facebook Login and select the
Redirect URI ,
3. Get the FB app-id and set to your odoo , facebook , client-id , as follow ,
same image as above then go back to your Odoo and key in the client id value here to remind you the app-id is your client id ...
4. should be good to go ,
when you click sign in Facebook ...
if your browser already has the facebook session ( you already login )
then you should be able to see this ...
so that will simplify your client to login into your great odoo powered sited , should you have any further requirements , such as support assistance or customization requirements and implementation consultation services , for handling your Malaysia and Singapore SME business requirement , do feel free to let us know , thanks, happy odooing !