title: Rails migration delete row
body: <p>I'm trying to run a migration to delete two rows in the database. Here's the migration file ...</p>
  
  <pre><code>class RemoveMenuItem &lt; ActiveRecord::Migration
    def up
      MenuItem.delete(name: "Validation Settings")
      MenuItem.delete(name: "Identifier Lookup")
    end
  
    def down
      MenuItem.create(name: "Validation Settings", type: "MenuItem", actionable_item_id: 89, actionable_items_count: 0, sequence: 20)
      MenuItem.create(name: "Identifier Lookup", type: "MenuItem", actionable_item_id: 89, actionable_items_count: 0, sequence: 30)
    end
  end
  </code></pre>
  
  <p>... but I'm getting this error ...</p>
  
  <pre><code>PG::UndefinedTable: ERROR:  missing FROM-clause entry for table "id"
  LINE 1: ...ERE "actionable_items"."type" IN ('MenuItem') AND "id"."name...
                                                               ^
  : DELETE FROM "actionable_items" WHERE "actionable_items"."type" IN ('MenuItem') AND "id"."name" = 'Validation Settings'/Users/kweihe/.rvm/gems/ruby-2.1.6/gems/activerecord-3.2.22/lib/active_record/connection_adapters/postgresql_adapter.rb:1163:in `async_exec'
  </code></pre>