Use .env file to filter sensitive data from VCR cassettes

gistfile1.rb

# Assuming that you're using .env to store your sensitive app credentials, then you can
# use VCR's `filter_sensitive_data` method to convert occurrences of those credentials 
# to `<%= ENV['#{key}'] %>` in your recorded VCR cassettes.

require 'vcr'

# Use the .env file to compile the list of sensitive data that should not be recorded in
# cassettes
def sensitive_strings
  contents = File.read "#{Rails.root}/.env"
  words = contents.split(/\s+/)
  # Only interested in words with an '=' in them
  words.reject! { |w| !w.include? '=' }
  # Create a list of key/value pairs
  words.map! { |w| w.split('=') }
  # Turn the key/value pairs into an actual hash
  Hash[words]
end

VCR.configure do |c|
  c.hook_into :webmock
  c.cassette_library_dir = 'spec/cassettes'
  c.configure_rspec_metadata!

  # Filter out sensitive data and replace with ERB interpolation
  sensitive_strings.each do |key, sensitive_string|
    # NB: intentionally not interpolating ENV[] as #{ENV[]}. We actually *want* '<%= ENV[*] %>' to
    # appear in VCR's ERB-enabled YML files
    manifestations = {
      CGI.escape(sensitive_string) => "<%= CGI.escape ENV['#{key}'] %>",
      sensitive_string             => "<%= ENV['#{key}'] %>"
    }
    manifestations.each_pair do |string, replacement|
      c.filter_sensitive_data(replacement) { string }
    end
  end
  
  # You must set ERB-enabled cassettes
  c.default_cassette_options = { record: :new_episodes, erb: :true }

end

no probs 😁 wow, that must be like 10 years old now