Rails 如何保存请求的 url? [英] Rails how to save the requested url?

问题描述

我有两种不同的方式来访问 url "localhost:3000/childrens/new".

I have two different ways to access the url "localhost:3000/childrens/new".

我在 childrens/new 页面中有一个下拉列表，当用户通过下拉列表选择一个选项时，它会显示使用 ajax 调用 childrens#new 方法的不同部分.

I have a drop down in childrens/new page and when the user selects an option through the drop down, it shows the different partials using ajax to call the childrens#new method.

1. 从 url "localhost:3000/parents" 访问孩子的新页面
2. 从 url "localhost:3000/parents1" 访问孩子的新页面

子节点创建成功后，用户应该被重定向到相关的 url(localhost:3000/parents 或 localhost:3000/parents1)

After the children have been successfully created, the user should be redirected to the relevant url (either localhost:3000/parents or localhost:3000/parents1)

推荐答案

实现这一目标的方法不止一种.

There are more than one way of how you can achieve this.

一种解决方案是在请求 childs/new 时将引用者存储在 session/cookie 中:(在 children_controller 中)

One solution would be to store the referrer inside of the session/cookie when the childrens/new is requested: (inside children_controller)

def new
  session['children_new_referrer'] = request.env["HTTP_REFERER"]
  #....YOUR CODE....
end

然后使用存储在 session/cookie 中的引用值来适当地重定向:

And then using that referrer value stored in session/cookie to redirect appropriately:

def create
  #.....YOUR CODE....
  if @child.save
    format.html {redirect_to (session['children_new_referrer'] || parents_path)}
  #.....YOUR CODE....
end

其中@child 是我假设您正在使用参数构建的对象，并且 parents_path 是通过您的路由定义的.您可以根据自己的需要随意调整这两个.

where @child is the object which I assume you are building with the parameters, and parents_path is being defined through your routes. Feel free to adjust these two based on your needs.

另一种解决方案是不使用会话，而是将引用 uri/path 保存在子/新表单页面本身内.这种替代方法的好处是使解决方案会话/请求范围独立于处理在页面范围内存储引用 uri/路径的要求.

An alternative solution would be to not use sessions, but instead save the referrer uri/path inside of the children/new form page itself. This alternative has the benefit of making the solution session/request scope independent with handling the requirement of storing the referral uri/path within the page scope.

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