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if Rails.env.production?
  Sass::Plugin.options.merge!(
    :template_location => 'public/stylesheets/sass',
    :css_location => 'tmp/stylesheets'
  )

  Rails.configuration.middleware.delete('Sass::Plugin::Rack')
  Rails.configuration.middleware.insert_before('Rack::Sendfile', 'Sass::Plugin::Rack')

  Rails.configuration.middleware.insert_before('Rack::Sendfile', 'Rack::Static',

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class AddUserIdToJobs < ActiveRecord::Migration
  def change
    add_column :jobs, :user_id, :integer
  end
end

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  def charity_donations_total_amount
    charity_donations.reduce(0) do |sum, charity_donation|
      sum + charity_donation.total_amount
    end
  end

  # versus

  def charity_donations_total_amount
    sum = 0

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actionmailer (2.3.11)
actionpack (2.3.11)
activemodel (3.0.7)
activerecord (2.3.11)
activeresource (2.3.11)
activesupport (3.0.7, 2.3.11)
acts_as_audited (1.1.1)
addressable (2.2.6)
arel (2.0.10)
Ascii85 (1.0.1)

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maximum_id = 2

[:customer_a, :customer_b].each_with_index do |database_name, index|

  id_offset = index * maximum_id

  ActiveRecord::Base.connection.execute %{
    insert into people
      select
        `id` + #{id_offset},

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maximum_id = 0

[:customer_a, :customer_b].each do |database_name|

  ActiveRecord::Base.establish_connection(database_name)

  maximum_id_in_database = 0

  ActiveRecord::Base.connection.tables.each do |table_name|

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Here at Highgroove we like a good challenge, and we love it when we can meet a challenge with a simple and elegant solution.

Recently we had a customer with a great problem to have - they had signed up lots of new customers - but were experiencing some growing pains.

You see - a typical Ruby on Rails app has one database. This customer's app had one database per customer.

Routine tasks like launching servers, deploying code, or migrating databases were taking much longer than normal because they had to be performed per customer instead of just once.

What this app needed instead was Multitenancy - a fancy word for combining the customers into one database.

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One

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class Job < ActiveRecord::Base
  serialize :data
  serialize :exception
  
  named_scope :current_customer, lambda { { :conditions => { :customer_id => Customer.current.id } } }

  def self.spawn(person_id, data)
    customer = Customer.current
    job = create!(:person_id => person_id, :data => data)
    job.spawn do

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➜  giving101 git:(master) git push heroku master
Counting objects: 19, done.
Delta compression using up to 8 threads.
Compressing objects: 100% (9/9), done.
Writing objects: 100% (10/10), 1.16 KiB, done.
Total 10 (delta 6), reused 0 (delta 0)

-----> Heroku receiving push
-----> Ruby/Rails app detected
-----> Detected Rails is not set to serve static_assets