+require 'lib/migrate'
+
+class AlterUserRolesAndBlocks < ActiveRecord::Migration
+ def self.up
+ # the initial granter IDs can be "self" - there are none of these
+ # in the current live DB, but there may be some in people's own local
+ # copies.
+ add_column :user_roles, :granter_id, :bigint
+ UserRole.update_all("granter_id = user_id")
+ change_column :user_roles, :granter_id, :bigint, :null => false
+ add_foreign_key :user_roles, [:granter_id], :users, [:id]
+
+ # make sure that [user_id, role] is unique
+ add_index :user_roles, [:user_id, :role], :name => "user_roles_id_role_unique", :unique => true
+
+ # change the user_blocks to have a creator_id rather than moderator_id
+ rename_column :user_blocks, :moderator_id, :creator_id
+
+ # change the "end_at" column to the more grammatically correct "ends_at"
+ rename_column :user_blocks, :end_at, :ends_at
+ end
+
+ def self.down
+ remove_column :user_roles, :granter_id
+ remove_index :user_roles, :name => "user_roles_id_role_unique"
+ rename_column :user_blocks, :creator_id, :moderator_id
+ rename_column :user_blocks, :ends_at, :end_at
+ end
+end