Easy way to create your own Rake task
TL;DR: use rails generator
rails g task my_namespace my_task1 my_task2.
Some time ago I found a generator in Ruby on Rails’s sources to create a Rake task. There were no information about it anywhere. As a result, I decided to share my findings. This post will show you a simple and efficient method for generating them.
Several ways to create Rake tasks
There are at least two known approaches you can take:
- Write it from scratch.
- Copy and paste existing code and modify it as necessary.
The generator way to create Rake tasks
As it turns out, there is a third approach - utilize this Rake generator:
$ rails g task my_namespace my_task1 my_task2
It generates a scaffold for the new Rake tasks located within the
namespace :my_namespace do
task :my_task1 => :environment do
task :my_task2 => :environment do
Now write some code inside the tasks’ body. This way, you save time creating the preparation code and concentrate on what matters.
Confirm that they are real and can be executed:
$ rake -T | grep my_namespace
The command outputs the following content:
rake my_namespace:my_task1 # TODO
rake my_namespace:my_task2 # TODO
It indicates two Rake tasks (
my_task2) defined under the namespace
my_namespace. However, they are empty and will do nothing until you add some code. The TODO comments remind you about that.
It has never been easier
The generator provides a skeleton for you. It’s easy to use and saves you time. You only need to focus on the task behavior.
I’ve authored a book on the subject called Rake Task Management Essentials. To learn more about this remarkable tool, I recommend purchasing a copy. After reading, you will understand how to use Rake effectively in your daily tasks. The book guides you through easy-to-follow and practical examples.