Rails 新建与创建 [英] Rails new vs create

问题描述

为什么需要在 RESTful 控制器中定义一个新方法，并用一个 create 方法跟进?

Why is there a need to define a new method in RESTful controller, follow it up with a create method?

Google 搜索没有为我提供我正在寻找的答案.我理解其中的区别，但需要知道为什么它们会被这样使用.

Google search didn't provide me the answer I was looking for. I understand the difference, but need to know why they are used the way they are.

推荐答案

在 Rails 的 REST 实现中，new 和 create 被区别对待.

Within Rails' implementation of REST new and create are treated differently.

对 /resources/new 的 HTTP GET 旨在呈现适合创建新资源的表单，它通过调用控制器中的 new 操作来实现，这会创建一个新的未保存记录并呈现表单.

An HTTP GET to /resources/new is intended to render a form suitable for creating a new resource, which it does by calling the new action within the controller, which creates a new unsaved record and renders the form.

到 /resources 的 HTTP POST 获取作为 new 操作的一部分创建的记录，并将其传递给控制器​​中的 create 操作，然后尝试将其保存到数据库中.

An HTTP POST to /resources takes the record created as part of the new action and passes it to the create action within the controller, which then attempts to save it to the database.

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