ruby on rails - Unable to load application: LoadError: cannot load such file -- database_cleaner/active_record

Question

I am trying to deploy ruby on rails project on render platform. I inherited this project in my school and added new features there. I get the following error when I run my Rails application in production mode, but when I run my app in development mode it works fine. "Unable to load application: LoadError: cannot load such file -- database_cleaner/active_record ".

I tried to follow all steps in docs https://render.com/docs/deploy-rails, reinstall cleaner gem, checked compatability, nothing helped

Answer 1

Here are a few steps you can take to troubleshoot and resolve the issue:

• Gemfile: Make sure that the database_cleaner gem is included in your Gemfile and that it is not limited to certain environments. It should be available in all environments.

group :development, :test do
  gem 'database_cleaner'
  # Other gems...
end

• Bundle Install: Run bundle install to ensure that all the gems, including database_cleaner, are properly installed.

bundle install

• Environment Configuration: Check your config/environments/production.rb file or the relevant environment configuration file. Ensure that the database_cleaner gem is not explicitly disabled or excluded in the production environment.

• Database Cleaner Configuration: If you are using database_cleaner for test purposes only, make sure that it is correctly configured in your spec_helper.rb or rails_helper.rb file and not causing issues in the production environment.

  Example configuration in rails_helper.rb:

# rails_helper.rb

RSpec.configure do |config|
  # Other configurations...

  config.before(:suite) do
    DatabaseCleaner.strategy = :truncation
  end

  config.before(:each) do
    DatabaseCleaner.start
  end

  config.after(:each) do
    DatabaseCleaner.clean
  end
end

Notes: Ensure that you are using a version of database_cleaner that is compatible with your Rails version.

Answer 2

The following worked for me:

1. In the Gemfile, moved database_cleaner-active_record out of the :development block, so it gets installed always
2. Moved the require in the cypress_rails intializer to after the return statement