The difference between << and create

最新推荐文章于 2024-04-17 17:57:51 发布
最新推荐文章于 2024-04-17 17:57:51 发布 · 145 阅读 · 0
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#rails

本文探讨了Active Record设计模式中&lt;&lt;方法与create方法的区别。主要关注于两者触发的回调不同，以及返回值的差异。对于理解Rails等框架中的对象持久化行为具有重要意义。
1. << is transactional, create is not
2. << method triggers the :before_add and :after_add callbacks, but the create method does not
3. << method returns operation_success ? association_proxy : false, while the create method returns the new instance created.
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