rails_compat

README

Rails Compat Mode

This is is a simple Go package that enables you to read Rails cookies set by Devise and Warden in Go.

Why do you need it?

When you want to port over a rails app to a go codebase but you still want to access the user id from Go, then you use this package to get the user key.

Usage

// keyBase is from environment variable SECRET_KEY_BASE
var sess = map[string]interface{}
decrypted = rails_compat.DecodeRailsSession(cookie, keyBase)
buffer := bytes.NewBuffer([]byte(decrypted))
decoder = json.NewDecoder(buffer)
err := decoder.Decode(&sess)

// The user id is present in the `warden.user.user.key` as the first item of the first item in the array
// I have a utility method to extract it.
uid, err = rails_compat.ExtractUserId(decrypted)

Documentation

Index

• Constants
• func DecodeRailsSession(cookie, keyBase string) string
• func ExtractUserId(jsonString string) (int, error)

Constants

const WARDEN_FORMAT_ERROR = "warden user key format invalid"

Functions

func DecodeRailsSession

func DecodeRailsSession(cookie, keyBase string) string

DecodeRailsSession takes a rails cookie, and the secret_key_base from your secrets.yml and decrypts the session as a string

func ExtractUserId

func ExtractUserId(jsonString string) (int, error)

ExtractUserId extracts User Id from the decrypted cookie Please note that it assumes that the model name is user