Rails Put vs Post [英] Rails Put vs Post

问题描述

我一直在阅读put和post请求之间的区别，我有一些与rails相关的问题：我想更改已创建的行中的一个特定字段...我应该使用put还是一个帖子请求？例如，以下是不同的？

I have been reading up on the difference between put and post requests and I have some related questions as it pertains to rails: I would like to change one specific field in an already created row...should I use a put or a post request? For example are the following different?

#Assume this is a put request
def update
    @model=Model.find(x)
    @model.field="new_field"
    @model.save
end

#Assume this is a post request
def update
    @model=Model.find(x)
    @model.field="new_field"
    @model.save
end

#What if I use the rails update method?
def update
    @model=Model.find(x)
    @model.update(model_params)
    @model.save
end

提前致谢。

推荐答案

根据rails惯例，

PUT用于更新现有资源

PUT is used for updating an existing resource

POST用于创建新资源

POST is used for creating a new resource

在rails 4中，PUT已更改为PATCH以避免混淆。

In rails 4, PUT has been changed to PATCH to avoid confusion.

Rails生成的路由将默认情况下如下所示

Rails generated routes will look like below by default

    posts GET    /posts(.:format)                            {:action=>"index", :controller=>"posts"}
          POST   /posts(.:format)                            {:action=>"create", :controller=>"posts"}
 new_post GET    /posts/new(.:format)                        {:action=>"new", :controller=>"posts"}
edit_post GET    /posts/:id/edit(.:format)                   {:action=>"edit", :controller=>"posts"}
     post GET    /posts/:id(.:format)                        {:action=>"show", :controller=>"posts"}
          PUT    /posts/:id(.:format)                        {:action=>"update", :controller=>"posts"}
          DELETE /posts/:id(.:format)                        {:action=>"destroy", :controller=>"posts"}

注意PUT和POST的操作

Notice the action for PUT and POST

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