Adds a branch for unlimited project hierarchy.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/branches/work@2148 e93f8b46-1217-0410-a6f0-8f06a7374b81

nested_projects/db/migrate/045_create_boards.rb

@@ -0,0 +1,18 @@
+class CreateBoards < ActiveRecord::Migration
+  def self.up
+    create_table :boards do |t|
+      t.column :project_id, :integer, :null => false
+      t.column :name, :string, :default => "", :null => false
+      t.column :description, :string
+      t.column :position, :integer, :default => 1
+      t.column :topics_count, :integer, :default => 0, :null => false
+      t.column :messages_count, :integer, :default => 0, :null => false
+      t.column :last_message_id, :integer
+    end
+    add_index :boards, [:project_id], :name => :boards_project_id
+  end
+
+  def self.down
+    drop_table :boards
+  end
+end