Tenancy

There are , basically, 3 types to create an multi-tenant application.

• Same Database and shared 'namespace' to all tenants (Using tenant_id on every table to identify the client data)
• Same Database with distinct 'namespace' to every tenants (Using Database schema)
• Database per Tenant (Every Tenant will provisioning your all database)

This example will show you the second approach.
Using Distinct 'namespace', instead of use tenant_id in every database table ( IMHO isn´t appropriate to a nice SaaS product ), every client will have your own database schema.

Installation

To continue, your machine must have installed the POSTGRESQL and [Bundler] (http://gembundler.com/)

git clone git://github.com/tdantas/Tenancy.git   
bundle install

Update config/database.yml username and password

development:
  adapter: postgresql
  encoding: unicode
  database: tenancy_db
  username: YOUR_USER_HERE
  password: YOUR_PASSWORD_HERE
  host: localhost

Create the Database and migrate before run

rake db:create   
rake db:migrate   

And now, Ready ??

bundle exec rails s   

Where is the code ?

Better than try to explain the code, clone this repository and look close to:

ApplicationController

responsibility: Change the schema context between requests.

Account

responsibility: The model that will contain the schema.

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