Class: SimpleGroupMigration

Inherits:
ActiveRecord::Migration
  • Object
show all
Defined in:
lib/generators/simple_group/migration/templates/active_record/migration.rb

Class Method Summary collapse

Class Method Details

.down ⇒ Object 



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# File 'lib/generators/simple_group/migration/templates/active_record/migration.rb', line 17

def self.down
  drop_table :simple_group_combinations
end

.up ⇒ Object 



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# File 'lib/generators/simple_group/migration/templates/active_record/migration.rb', line 2

def self.up
  create_table :simple_group_combinations do |t|
    t.references :group_item, polymorphic: true
    t.references :group, polymorphic: true
    t.timestamps
  end

  if ActiveRecord::VERSION::MAJOR < 4
    add_index :simple_group_combinations, [:group_item_id, :group_item_type]
    add_index :simple_group_combinations, [:group_id, :group_type]
  end
  add_index :simple_group_combinations, [:group_item_id, :group_item_type, :group_id, :group_type],
            unique: true, name: :index_simple_group_combinations
end