Rake task to check if your Rails database exist or not

README.md

Usage

1. Create a file named "db.rake" under rails' "lib/tasks/db.rake"

2. Place the code there and done!

It's great to use along with docker, since "A started container is not a ready container".

Sample usage can be found in: https://github.com/falko-org/Falko-API

db.rake

namespace :db do
  desc "Checks whether the database exists or not"
  task :exists do
    begin
      # Tries to initialize the application.
      # It will fail if the database does not exist
      Rake::Task['environment'].invoke
      ActiveRecord::Base.connection
    rescue
      exit 1
    else
      exit 0
    end
  end
end