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