How do I get the host and port in a Rails application

Question

In a Rails Model, I want to be able to find out the host and port. For example, if I am in a test environment it would return http://localhost:3000/ and if I

Answer 1

You can use this

<%= request.protocol + request.host_with_port %>
#=> https://example.com:3000
<%= request.protocol + request.host %>
#=> https://example.com

When you use in string concatenation

"#{request.protocol}#{request.host_with_port}/book/1"
# https://example.com:3000/book/1

Answer 2

host_with_port should work for you: http://apidock.com/rails/ActionDispatch/Http/URL/host_with_port

Answer 3

"#{root_url}"

which should be declared in your routes.rb

Answer 4

You can get those values in your controllers (request.host, request.port etc.).

You'd have to give that to your models via parameters as the request object is only available in the controllers.

Answer 5

Request.host

http://api.rubyonrails.org/classes/ActionController/Request.html#M000712

Answer 6

you can get full uri (http://localhost:3000/ or http://my.application.com/ etc) with request_uri

http://apidock.com/rails/ActionController/AbstractRequest/request_uri