Rails 4路由约束，仅包含查询字符串或数字 [英] Rails 4 route constraints with query string or numbers only

问题描述

我正在尝试实施这两个有约束的路线：

I'm trying to implement these two routes with constraints:

get "products/:id", to: "products#show", constraints: { id: /\d/ }
get "products/:name", to: "products#search", constraints: { name: /[a-zA-Z]/ }

第一条路线应使用 localhost：3000 / products这样的URL触发/ 3 ，最后一个应使用 localhost：3000 / products /？name = juice 触发。

The first route should trigger with an URL like localhost:3000/products/3 and the last one should trigger with localhost:3000/products/?name=juice.

不起作用，我在Google上搜索了很多有关此问题的信息，但是我似乎找到了Ruby on Rails的第二或第三版的解决方案，并且其中大多数现已弃用。

Doesn't work, I googled a lot about this problem but I seem to find solutions for the second or third version of Ruby on Rails, and most of them are deprecated now.

有什么想法吗？谢谢。

推荐答案

如果您喜欢结果URL的外观，则可以按原样使用路由。不需要查询字符串。

You can use the routes as-is if you like the look of the resulting URLs. No need for a query string.

在您的控制器中，您会遇到一些类似的事情：

In your controller, you'd have something along these lines:

def show
  @product = Product.find(params[:id])
  # do stuff
end

def search
  # I'm assuming your Product model has a `name` attribute
  @product = Product.find_by(name: params[:name])
  # do stuff
end

您可能希望对 find_by 返回的错误进行检查零，因为：name 不匹配任何东西，但这基本上就是它。

You probably want some error checking on find_by returning nil because :name did not match anything, but that's basically it.

您的route.rb将具有原始的路径定义：

Your routes.rb would have your original route definition:

get "products/:id", to: "products#show", constraints: { id: /[[:digit]]/ }
get "products/:name", to: "products#search", constraints: { name: /[[:alpha:]]/ }

您的应用程序应同时响应以下两个方面：

Your application should respond to both:

• 本地主机：3000 / products / 3


• 本地主机：3000 / products /果汁

这篇关于Rails 4路由约束，仅包含查询字符串或数字的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！