What is the difference between observers and callbacks in Ruby on rails?

What is the difference between observers and callbacks in Ruby on rails?

题目类型: 技术面试题

这是一道技术面试题，常见于澳洲IT公司面试中。

难度: hard

标签: interviewbit, ruby-on-rails, topic-specific, ruby, rails, backend

参考答案摘要

Callback methods in Rails can only be called at specific moments in an object's life cycle, such as validation, creation, updating, deletion, and so on. The rails callback, unlike the rails observers,...

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