Class: CreateUses

Inherits:
ActiveRecord::Migration
  • Object
show all
Defined in:
lib/db/migrate/016_create_uses.rb

Class Method Summary collapse

Class Method Details

.down ⇒ Object 



14
15
16
 
# File 'lib/db/migrate/016_create_uses.rb', line 14

def self.down
  drop_table :uses
end

.up ⇒ Object 



2
3
4
5
6
7
8
9
10
11
12
 
# File 'lib/db/migrate/016_create_uses.rb', line 2

def self.up
  create_table "uses", id: false, force: :cascade do |t|
    t.integer "signal_id"
    t.integer "bus_id"
  end

  add_index "uses", ["signal_id", "bus_id"], name: "index_uses_on_signal_id_and_bus_id", unique: true, using: :btree

  add_foreign_key "uses", "signals"
  add_foreign_key "uses", "buses"
end