Simple rake task for obfuscating data, to use in screenshots, demos, etc. See http://everydayrails.com/2013/05/20/obfuscated-data-screenshots.html for context.

obfuscate.rake

if Rails.env.development?
  require 'faker'

  namespace :obfuscate do
    desc "Obfuscate user data"
    task :users => :environment do
      raise "Not to be run in production!" if Rails.env.production?
      User.all.each do |user|
        unless user.admin?
          user.update_attributes(
            firstname: Faker::Name.first_name,
            lastname: Faker::Name.last_name,
            email: Faker::Internet.email)
        end
      end
    end

    desc "Obfuscate group data"
    task :groups => :environment do
      raise "Not to be run in production!" if Rails.env.production?
      schools = ['High School', 'Middle School', 'Elementary School']

      Group.all.each do |group|
        group.update_attributes(
          name: "#{Faker::Address.city} #{schools.shuffle[0]}",
          description: '')
      end
    end

    desc "Obfuscate project data"
    task :projects => :environment do
      raise "Not to be run in production!" if Rails.env.production?
      Project.all.each do |project|
        project.update_attributes(name: "#{Faker::Address.state} Project")
      end
    end

    desc "Obfuscate user, group and project data"
    task :all => [:users, :groups, :projects]
  end
end