How do I generate a random 4-6 digit OTP number to verify email for sign_up in rails?

Question

As we know, I can use several gems to implement OTP but I'm fresher so I want to know, what is the procedure to set an otp for different kind of reason.

why you are generating OTP to verify email? why can't you use devise inbuilt way to confirm user's email? — LHH, Nov 23 '22 at 11:31
I'm fresher rails developer and I already use devise but I want to know how to verify email. When an user visit for sign up on website. — Prakash Chand, Nov 25 '22 at 07:47
https://www.bogotobogo.com/RubyOnRails/RubyOnRails_Devise_Authentication_Sending_Confirmation_Email.php and https://stackoverflow.com/questions/8186584/how-do-i-set-up-email-confirmation-with-devise — LHH, Nov 26 '22 at 06:25

score 0 · Answer 1 · answered Nov 23 '22 at 13:54

OTP can be used for the MFA authentication. You can create the OTP by using a ruby random number and can also pass the length of the number. This can be verified by clicking the link you will send in your email, which will open a pop-up for the OTP input, and submit will validate.

score 0 · Answer 2 · answered Dec 02 '22 at 09:42

0

I believe this code will do the work for you:

rand.to_s[2..7]

answered Dec 02 '22 at 09:42

Themis Nikellis

58
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How do I generate a random 4-6 digit OTP number to verify email for sign_up in rails?

2 Answers2