Help regarding adding phone number to user model after omniauth

[Pradeep Yadav]

Hi Everyone,

I have used devise and omniauth-facebook for my application login .i have a phone number field in my sign-up form of devise and its is mandatory to enter .
But when users login via facebook it did not provide user phone number .
How can i   redirect user to provide phone number before finishing the signup process using omniauth .

Thanks in advance .