seeds.rb

if Rails.env.development?
  class Array
    def my_method
    end
  end
end

# Users
users = {}
[
  { name: 'kenn', email: 'kenn@example.com' },
  { name: 'foo', email: 'foo@example.com' },
  { name: 'bar', email: 'bar@example.com' },
].each do |hash|
  key = hash[:name].to_sym
  users[key] = User.create!(hash)
end

# Seeding code goes here...