Ruby Make Local Gem

Make your own gem in Ruby

Requirements

Ruby

Steps

1. Create Project Structure of Gem Generator

mkdir own_gem
cd own_gem
mkdir lib

2. Create Gem Spec using Template

local_gem.gemspec

Gem::Specification.new do |s|
  s.name = %q{local_gem}
  s.author = 'Jonorsky'
  s.version = "0.0.0"
  s.date = %q{2019-01-01}
  s.summary = %q{Gem Description}
  s.files = [
    "lib/local_gem.rb"
  ]
  s.require_paths = ["lib"]
end

3. - Add Code to lib

Put 1 ruby file in lib /lib/local_gem.rb

module local_gem
  class Person
    def self.name?
      puts "Name: Jonorsky"
    end
  end
end

4. - Generate or Build the Gem File

Build it using this command

gem build local_gem.gemspec

You should see the following output

Successfully built RubyGem
Name: local_gem
Version: 0.0.0
File: local_gem-0.0.0.gem

The Generated Gem will be rename as 'local_gem-0.0.0.gem'

Gem name = concatenated s.name + '-' + s.version

Now you create your own Gem and you can use it in other projects

Install Your Created Gem

Make separate folder, for example in Desktop

cd Desktop
mkdir project
cd project

Install Ruby in that Folder Directory, Find the path of the local_gem-0.0.0.gem by right click the file > then copy the Path in Parent Folder

/home/*YourAccountName/Desktop/own_gem/local_gem-0.0.0.gem

After that execute this command in order to install your Gem in project directory

gem install --local /home/*YourAccountName/Desktop/own_gem/local_gem-0.0.0.gem

The output must be

Successfully installed local_gem-0.0.0
Parsing documentation for local_gem-0.0.0
Installing ri documentation for local_gem-0.0.0
Done installing documentation for local_gem after 0 seconds
1 gem installed

Run Created Gem in the Ruby File

Create your Ruby File in project folder with test_gem.rb

require 'local_gem'

local_gem::Person.name?

Execute your ruby file

ruby test_gem.rb

Output:

Name: Jonorsky

jonorsky / Ruby-Make-Gem