Skip to content

Instantly share code, notes, and snippets.

@drogus
Created July 26, 2013 10:49
Show Gist options
  • Star 62 You must be signed in to star a gist
  • Fork 8 You must be signed in to fork a gist
  • Save drogus/6087979 to your computer and use it in GitHub Desktop.
Save drogus/6087979 to your computer and use it in GitHub Desktop.
This is the example contents of the Rakefile, which you would use to run active record tasks without using Rails. It assumes using the same directories as rails uses: `db/migrate`, `config/database.yml`.
require 'bundler/setup'
require 'active_record'
include ActiveRecord::Tasks
db_dir = File.expand_path('../db', __FILE__)
config_dir = File.expand_path('../config', __FILE__)
DatabaseTasks.env = ENV['ENV'] || 'development'
DatabaseTasks.db_dir = db_dir
DatabaseTasks.database_configuration = YAML.load(File.read(File.join(config_dir, 'database.yml')))
DatabaseTasks.migrations_paths = File.join(db_dir, 'migrate')
task :environment do
ActiveRecord::Base.configurations = DatabaseTasks.database_configuration
ActiveRecord::Base.establish_connection DatabaseTasks.env
end
load 'active_record/railties/databases.rake'
@foton
Copy link

foton commented Mar 21, 2017

I would like to point to Jason modification of this gist, which works for ActiveRecord 4.2.0

@Paxa
Copy link

Paxa commented Jul 3, 2017

Solved as:

# Rakefile
if Rake.application.top_level_tasks != ['test']
  require_relative 'config/application'
  Rails.application.load_tasks
  Rake::Task['test'].clear
end

task :test do
  ENV['RAILS_ENV'] = 'test'
  Dir.glob('./test/**/*_test.rb').each { |file| require file}
end

@euclid1990
Copy link

I have made minimal example/setup using Rails migration and active record outside Rails
https://github.com/euclid1990/rails-migration
(Support Rails >= 5.2)
🔢

@andreyuhai
Copy link

I get
ActiveRecord::AdapterNotSpecified: database configuration does not specify adapter

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment