Json web token implementation

json_web_token.rb

require 'jwt'

class JsonWebToken
 def self.encode(payload, expiration = Rails.application.secrets.jwt_expiration_seconds.to_i.seconds.from_now)
   payload = payload.dup
   payload[:exp] = expiration.to_i
   JWT.encode(payload, Rails.application.secrets.hmac_secret_key)
 end

 def self.decode(token)
   JWT.decode(token, Rails.application.secrets.hmac_secret_key)
 rescue JWT::ExpiredSignature, JWT::DecodeError
   false
 end

 def self.decode_to_payload(token)
   decode(token).first.except('exp').with_indifferent_access
 end
end