脚手架不更新视图
我对以下过程有疑问：
- 脚本/生成脚手架产品 title:string description:text
- db:migrate
然后我生成一个迁移，将列描述添加到
表产品并迁移数据库 再次。
我的问题是：为什么字段描述没有添加到项目视图中？这是正常的铁轨脚手架行为吗？ 我想我在视频教程中看到脚手架也会更新视图，这会非常方便。 预先感谢您的任何帮助！
I have a question to the following procedure:
- script/generate scaffold product
title:string description:text - db:migrate
then I generate a migration which adds a column description to the
table products and migrate the db
again.
My question is: why is the field description not added to the project-views? Is that normal rails scaffold behaviour?
I think I saw in a video tutorial that the scaffold updates as well the views, which would be very convenient.
Thanks in advance for any help!
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这是正常的，因为脚手架不会“监视”表或任何其他脚手架相关资源（控制器、模型、视图、测试等）的更改。
在生成脚手架时，您已经有了描述列。为什么您需要为此进行另一次迁移？
This is normal since scaffold does not "monitor" changes to the table or to any other scaffold-related resource (controller, model, views, tests, etc.).
You have description column already when generating the scaffold. Why do you need another migration for this?
这是脚手架的正常行为，但是还有其他选择。
如果您要查看 Ryan Bates nifty_scaffold 生成器，那么这将允许您重新运行支架一代。 假设您没有更改生成的代码。
这些生成器可以根据数据库模型的当前状态重新生成视图/规范/测试。
请注意，如果您已经自己自定义了视图，那么它们可能会被覆盖。
This is normal behaviour for scaffolding, however there are alternatives.
If you were to look at Ryan Bates nifty_scaffold generator then this would allow you to re-run the scaffold generation. Assuming that you hadn't changed the generated code.
These generators can regenerate the views/spec/tests based upon the current state of the database model.
Be aware that if you have already customised the views yourself then they could be overwritten.