The jwt gem is a Ruby library for
encoding and decoding JWT tokens. You can create a signed JWT with the
#encode method by specifying a secret and a hash algorithm.
payload = { id: 1, email: '[email protected]' }
secret = Rails.application.credentials.secret_key_base
token = JWT.encode(payload, secret, 'HS256')This will create a JWT token that contains some JWT headers, application data, and an encrypted secret that signs the data. This can be passed to and from your client app as a way of identifying and authenticating a user.
See the jwt-ruby docs or
jwt.io for more details.