如何获得请求引荐来源域名？ 没有子域[RAILS]

Question

For example:

@ref = 'http://sub.domain.com'
URI.parse(@ref).host 

returns 'sub.domain.com'. How to get 'domain.com' only?

Answer 1

Use request.domain(1) to get 'domain.com'.

Per the Rails Guides section about the request object , the request.domain property takes an optional argument, ie request.domain(n) returns

The hostname's first n segments, starting from the right (the TLD).

It's not obvious from this description, but it's actually starting from the dot before the TLD; so given a request object for 'sub.domain.com', request.domain(0) would return '.com' and request.domain(1) would return 'domain.com'.

Answer 2

将正则表达式应用于URI.parse(@ref).host仅返回域

URI.parse(@ref).host.match(/\w*.com$/)[0]

Answer 3

只需使用请求。

request.domain

Answer 4

To get the domain name you have to use the below

request.domain

If you use

@ref = 'http://sub.domain.com'
URI.parse(@ref).host ====> It will give you host name(Both domain and subdomain)