Undefined method `escape' for URI:Module - ruby-on-rails

Question

I'm a noob studying Ruby on Rails. I am trying to integrate my ruby on rails app to Quickbooks. I'm following the steps of this video. And I am stuck when I try to authenticate by pressing the "Connect to QuickBooks" button.
I get this error;
I did a little research and found out that this error was about the URI.escape() command. I think they removed it in Ruby 3. How can I resolve this issue? I can't even figure out where this URI.escape() command is located.
This is from vendors_controller.rb
def authenticate
callback = oauth_callback_vendors_url
token = $qb_oauth_consumer.get_request_token(:oauth_callback => callback)
session[:qb_request_token] = token
# If Rails >= 4.1 you need to do this => session[:qb_request_token] = Marshal.dump(token)
redirect_to("https://appcenter.intuit.com/Connect/Begin?oauth_token=#{token.token}") and return
end
def oauth_callback
at = session[:qb_request_token].get_access_token(:oauth_verifier => params[:oauth_verifier])
# If Rails >= 4.1 you need to do this => at = Marshal.load(session[:qb_request_token]).get_access_token(:oauth_verifier => params[:oauth_verifier])
session[:token] = at.token
session[:secret] = at.secret
session[:realm_id] = params['realmId']
redirect_to root_url, notice: "Your QuickBooks account has been successfully linked."
end
My initializer quickbooks.rb
QB_KEY = "I PASTED MY CLIENT ID KEY HERE"
QB_SECRET = "I PASTED MY CLIENT SECRET HERE"
$qb_oauth_consumer = OAuth::Consumer.new(QB_KEY, QB_SECRET, {
:site => "https://oauth.intuit.com",
:request_token_path => "/oauth/v1/get_request_token",
:authorize_url => "https://appcenter.intuit.com/Connect/Begin",
:access_token_path => "/oauth/v1/get_access_token"
})
My rails version Rails 6.1.4
My ruby version ruby 3.0.1p64
Thank you for your time.

Answer 1

I know many people say that URI.escape wasn't good, but it was good enough for me when all I wanted from it is to escape urls with non-English characters.
So I just monkey patched it
Add the following under /config/initializers/functions_overrides.rb
(the file name can be anything you want)
require 'uri'
module URI
class << self
def escape(str)
alpha = "a-zA-Z"
alnum = "#{alpha}\\d"
unreserved = "\\-_.!~*'()#{alnum}"
reserved = ";/?:#&=+$,\\[\\]"
unsafe = Regexp.new("[^#{unreserved}#{reserved}]")
str.gsub(unsafe) do
us = $&
tmp = ''
us.each_byte do |uc|
tmp << sprintf('%%%02X', uc)
end
tmp
end.force_encoding(Encoding::US_ASCII)
end
end
end

Answer 2

Use the https://developer.intuit.com/app/developer/qbo/docs/develop/sdks-and-samples-collections/ruby
OAuth Ruby Client
Intuit offers an OAuth 2.0 Client which provides a set of methods that make it easier to work with Intuit’s OAuth and OpenID implementation.
Community Supported Ruby SDK
The Community Supported Ruby SDK makes it easy to integrate your web app with the QuickBooks Online API. This guide assumes that you have an existing web app that you want to integrate with QuickBooks Online.

Answer 3

URI#escape was deprecated and later removed - https://github.com/ruby/uri/commit/61c6a47ebf1f2726b60a2bbd70964d64e14b1f98
From the commit :
# This method is obsolete and should not be used. Instead, use
# CGI.escape, URI.encode_www_form or URI.encode_www_form_component
# depending on your specific use case.
Ruby 3.0.0 onwards URI#escape does not work.
Use CGI.escape or URI.encode_www_form as mentioned in the deprecation warning