Rails Custom Generator and Thor Example

cool_file_generator.rb

class CoolFileGenerator < Rails::Generators::Base
  def set_file_name
    @file_name = "cool_file.rb"
  end

  def create_cool_file
    body = ask "What should I write into the file?"
    create_file @file_name, "Insert after me \n" + body
  end

  def add_more_coolness
    insert_into_file @file_name, after: "Insert after me \n" do
      content = ask "What more should I write into the file?"
      content + "\n"
    end
  end
end