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A tool for building code generators.


Add this line to your application's Gemfile:

gem 'geny'

And then execute:

$ bundle

Or install it yourself as:

$ gem install geny


You are tired of writing the boilerplate for new React components. Let's solve that.

First, let's create a template at .geny/react/component/templates/component.erb:

import React from "react";

export const <%= name %> = props => {
  return <h1><%= name ></h1>

Next, we'll define our generator at .geny/react/component/generator.rb:

parse do
  description "generate a React component"
  usage "geny react:component [NAME]"
  argument :name, required: true, desc: "component name"

invoke do
  templates.copy "component.erb", "src/components/#{name}.js"

Awesome. Run it:

$ geny react:component Logo
        create  src/components/Logo.js

Obviously, this is a simple example. But Geny comes with a lot of tools to help you build really great code generators with minimal effort.


Bug reports and pull requests are welcome on GitHub at This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.


The gem is available as open source under the terms of the MIT License.

Code of Conduct

Everyone interacting in the Geny project’s codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.