[#issue-27] add tenant column to plutus accounts table

fixture_rails_root/db/migrate/20141027103120_tenant_plutus_tables.rb

@@ -0,0 +1,6 @@
+class TenantPlutusTables < ActiveRecord::Migration
+  def change
+    # add a tenant column to plutus accounts table.
+    add_column :plutus_accounts, :tenant_id, :string, index: true
+  end
+end

fixture_rails_root/db/schema.rb

@@ -11,14 +11,15 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20140224192409) do
+ActiveRecord::Schema.define(:version => 20141027103120) do
 
   create_table "plutus_accounts", :force => true do |t|
     t.string   "name"
     t.string   "type"
     t.boolean  "contra"
     t.datetime "created_at"
     t.datetime "updated_at"
+    t.string   "tenant_id"
   end
 
   add_index "plutus_accounts", ["name", "type"], :name => "index_plutus_accounts_on_name_and_type"

lib/generators/plutus/templates/tenant_migration.rb

@@ -0,0 +1,6 @@
+class TenantPlutusTables < ActiveRecord::Migration
+  def change
+    # add a tenant column to plutus accounts table.
+    add_column :plutus_accounts, :tenant_id, :string, index: true
+  end
+end

lib/generators/plutus/tenancy_generator.rb

@@ -0,0 +1,27 @@
+# lib/generators/plutus/plutus_generator.rb
+require 'rails/generators'
+require 'rails/generators/migration'
+
+module Plutus
+  class TenancyGenerator < Rails::Generators::Base
+    include Rails::Generators::Migration
+
+    def self.source_root
+      @source_root ||= File.join(File.dirname(__FILE__), 'templates')
+    end
+
+    # Implement the required interface for Rails::Generators::Migration.
+    # taken from http://github.com/rails/rails/blob/master/activerecord/lib/generators/active_record.rb
+    def self.next_migration_number(dirname)
+      if ActiveRecord::Base.timestamped_migrations
+        Time.now.utc.strftime("%Y%m%d%H%M%S")
+      else
+        "%.3d" % (current_migration_number(dirname) + 1)
+      end
+    end
+
+    def create_migration_file
+      migration_template 'tenant_migration.rb', 'db/migrate/tenant_plutus_tables.rb'
+    end
+  end
+end