Environment variables are nil in Rails app (can't connect to Google Drive)

Question

Working with the book Learn Ruby on Rails , I'm stuck on the section of the tutorial where you connect to Google Drive to save the form submission to a spreadsheet.

I'm not able to authenticate w/ Google because Rails.application.secrets.email_provider_username and Rails.application.secrets.email_provider_password are nil. More specifically, it seems like my rails app isn't seeing any of my environment variables.

I've verified that the variables are set properly:

ynkwinl-ujurvt0:learn-rails katie$ printenv | grep GMAIL_USERNAME
GMAIL_USERNAME=kjXXXXXX@gmail.com

And from the console:

learn-rails :001 > ENV["GMAIL_USERNAME"]
 => "kjXXXXXX@gmail.com"

But trying to access it via Rails:

learn-rails :001 > Rails.application.secrets.email_provider_username
 => nil

The relevant line of secrets.yml:

email_provider_username: <%= ENV["GMAIL_USERNAME"] %>

I've been stuck on this for an hour and can't find an answer (the previous question on this topic covered a slightly different scenario).

I've worked around it by hard coding my username/password into the secrets.yml file, but I'd like to understand what's going on for future reference.

Full 'secrets.yml' file for reference:

development:

  email_provider_username: <%= ENV["GMAIL_USERNAME"] %>
  email_provider_password: <%= ENV["GMAIL_PASSWORD"] %>
  domain_name: example.com
  mailchimp_api_key: <%= ENV["MAILCHIMP_API_KEY"] %>
  mailchimp_list_id: <%= ENV["MAILCHIMP_LIST_ID"] %>
  owner_email: <%= ENV["OWNER_EMAIL"] %>
  secret_key_base: very_long_random_string

test:
  secret_key_base: very_long_random_string

# Do not keep production secrets in the repository,
# instead read values from the environment.
production:
  email_provider_username: <%= ENV["GMAIL_USERNAME"] %>
  email_provider_password: <%= ENV["GMAIL_PASSWORD"] %>
  domain_name: <%= ENV["DOMAIN_NAME"] %>
  mailchimp_api_key: <%= ENV["MAILCHIMP_API_KEY"] %> 
  mailchimp_list_id: <%= ENV["MAILCHIMP_LIST_ID"] %> 
  owner_email: <%= ENV["OWNER_EMAIL"] %>
  secret_key_base: <%= ENV["SECRET_KEY_BASE"] %>

Answer 1

I had this problem and it was caused by spring running the server in the background even when I quit the server in the terminal.

If this is the cause in your case, you can fix it by running spring stop .

Answer 2

尝试：

Rails.application.secrets['email_provider_username']