Ruby on Rails中的字符串格式？

Question

I have fields for street name, city, state and zipcode for User model, and I want to simply make a Google Map query with these values like

https://www.google.com/maps?q=your+query

so that I can open hyperlink it to the actual google map page. Now I am wondering how I can make these parameters into the format of your+query. I want to know if I can do it in the template or controller and how I can pass those variables.

Answer 1

You can use CGI.escape to URL-encode the query. Here are the docs .

"https://www.google.com/maps?q=#{CGI.escape params[:query]}"

Answer 2

Ruby includes the URI module which is the preferred way of manipulating URIs as it's aware of encoding:

require 'uri'

uri = URI.parse('https://www.google.com/maps?q=your+query')
uri.query # => "q=your+query"

params = URI::decode_www_form(uri.query).to_h # => {"q"=>"your query"}
params['q'] = 'my query'
uri.query = URI::encode_www_form(params)

uri.to_s # => "https://www.google.com/maps?q=my+query"

Rails has a number of helpers for parsing and manipulating them though as that's what Rails is built around, so dig into your tutorial or book and take advantage of those.