未初始化的常量SampleApp（NameError）

Question

I'm trying to run the following command:

rails generate controller StaticPages home help --no-test-framework

And I keep getting this error:

/Users/josh/Desktop/RoR/rails_app/config/initializers/secret_token.rb:27:in `<top (required)>': uninitialized constant SampleApp (NameError)

Here's my secret_token.rb file

require 'securerandom'

def secure_token
  token_file = Rails.root.join('.secret')
  if File.exist?(token_file)
    # Use the existing token.
    File.read(token_file).chomp
  else
    # Generate a new token and store it in token_file.
    token = SecureRandom.hex(64)
    File.write(token_file, token)
    token
  end
end

SampleApp::Application.config.secret_key_base = secure_token

Answer 1

You probably change the name of your Rails application.

Check in config/application.rb that the name of your application is the same that the one use in your secret_token.rb file:

SampleApp::Application.config.secret_key_base = secure_token
^^^^^^^^^

You should have the following in config/application.rb :

# ...
module SampleApp
  class Application < Rails::Application
    # ...