class IAmICanCreate<%= "#{name.underscore}_permissions".camelize %> < ActiveRecord::Migration::Current
  def change
    create_table :<%= "#{name.underscore}_permissions" %>, force: :cascade do |t|
      t.string  :pred,     null: false
      t.string  :obj_type
      t.integer :obj_id
      t.string  :desc

      t.timestamps
    end

    add_index :<%= "#{name.underscore}_permissions" %>, %i[pred obj_type obj_id],
                unique: true, name: 'permission_unique_index', using: :btree
  end
end