在RubyActiveRecord中,如果没有ID列,如何销毁记录?

是否尝试使用ActiveRecord的“全部删除”方法?我的沙盒里有一段摘录:

>> customer = Customer.new(:login => 'foo')
=> #<Customer id: nil, status: 0, name: nil, login: "foo", password: nil, salt: nil, api_key: nil, address: nil, town: nil, state: nil, country: "USA", zipcode: nil, balance: #<BigDecimal:1032669b0,'0.0',9(18)>, discount: 0, last_four_cc: nil, auto_renew: false, contact_name: nil, contact_email: nil, domain: "anon.limelock.com", created_at: nil, updated_at: nil>
>> customer.save
=> true
>> Customer.all.count
=> 4
>> Customer.delete_all(:login => 'foo')
=> 1
>> Customer.all.count
=> 3

生成的SQL是 DELETE FROM `customers` WHERE (`customers`.`login` = 'foo')

退房 documentation

ActiveRecord::Base.connection.execute('DELETE FROM table_name WHERE ...')

我认为您需要有一个唯一的ID列,ActiveRecord才能正常工作,但我不能100%确定。