Example
class CreateUserAuthentications < ActiveRecord::Migration
def change
create_table "user_authentications", :force => true do |t|
t.integer "user_id"
t.integer "authentication_provider_id"
t.string "uid"
t.string "token"
t.datetime "token_expires_at"
t.text "params"
t.datetime "created_at", :null => false
t.datetime "updated_at", :null => false
end
add_index "user_authentications", ["authentication_provider_id"], :name => "index_user_authentications_on_authentication_provider_id"
add_index "user_authentications", ["user_id"], :name => "index_user_authentications_on_user_id"
end
end
