使用查询字符串进行Rails路由

本文介绍了使用查询字符串进行Rails路由的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我有一个问题，我需要从GET请求中传递值，但我不知道如何设置路由定义。

I have a problem where I need values passed in from a GET request and I don't know how to set up the routing definition.

我的Category对象具有类型（字符串），颜色（字符串）和许多产品。我想创建一个简单的Web服务，使调用者可以通过传递类别的类型和颜色来获取该类别的所有产品：

My Category object has a type(string),a color(string) and many products. I want to create a simple web service that lets the caller get all of a Category's products by passing in the Category's type and color:

www.myapp/getProducts?catType=toy&color=red

或？

www.myapp/categories/getProducts?catType=toy&color=red

如何为这种情况定义正确的路由？有没有更好的方法来以一种Restful的方式执行此操作...因为我知道Rails是Restful的，所以如果有一种正确地执行此操作的方法，那会更好。

How do I define the correct routing for this situation? Are there better ways to do this in a Restful manner... because I know that Rails is Restful, so if there is a way to do it "correctly" then that would be even better.

谢谢

推荐答案

第一个示例：

map.getproduct '/getProduct', :controller => 'your_controller', :action => 'your_action'

在控制器中，您将在参数哈希中使用catType和color：

In controller you will have catType and color in params hash:

params[:catType] => 'toy' params[:color] => 'red'

还有更好的方法吗？可能是的，但这取决于您的需求。如果始终具有catType和color参数，则可以添加如下路由：

Is there better way? Probably yes, but it depends on your needs. If you will always have catType and color parameters, than you can add route like this:

map.getproduct '/getProduct/:catType/:color', :controller => 'your_controller', :action => 'your_action'

您将可以使用上例中的params hash访问这些参数。您的网址将如下所示：

You will have access to those parameters with params hash like in previous example. And your urls will look like this:

www.myapp/getProduct/toy/red

如果您的参数可能会更改，则可以使用路由遍历：

If your parameters may change, you can use route globbing:

map.getproduct '/getProduct/*query', :controller => 'your_controller', :action => 'your_action'

然后，它将捕获所有具有 www.my的请求。 app/getProduct /...。但是您将在控制器中做更多的工作。您将可以通过以下方式访问 query ：

Then it will catch all request that has www.my.app/getProduct/... at the begining. But you will have more work in controller. You will have access to query with this:

params[:query]

并用于 www.myapp/getProduct/color/red/ catType / toy 它会给出：

params[:query] => ['color', 'red', 'catType', 'toy]

所以您必须解析手动操作。

So you have to parse it manualy.