如何在 Sinatra 视图中引用根路径

Question

有没有办法引用我的 Sinatra 应用程序的根 URL？在其中一个视图中说我想执行以下操作：

<a href="<%= ROOT_PATH/cats %>">Show all cats</a>

Sinatra 是否为 ROOT_PATH 或等价物提供了魔法助手？

Answer 1

应该可以通过 request.base_url

访问

由 rack 使用：

实现

def base_url
  url = "#{scheme}://#{host}"
  url << ":#{port}" if port != DEFAULT_PORTS[scheme]
  url
end

Get absolute (base) url in sinatra

Answer 2

#uri(addr = nil, absolute = true, add_script_name = true) ⇒ Object

Also known as: url, to

Generates the absolute URI for a given path in the app. Takes Rack routers and reverse proxies into account.

举个例子：

<a href="<%= uri('/cats') %>">Show all cats</a>

How to refer to root path in Sinatra views