Recently upgraded to Rails 5. There seems to be some compatibility issue, in particular when I run “rails c” or “rails s”.

The warning message is

Array values in the parameter are deprecated. Please use a String or nil. Fixed by applying the same join you see here to the line 11 of bin/spring:

Gem.paths = { 'GEM_PATH' => [Bundler.bundle_path.to_s, *Gem.path].uniq.join(File::PATH_SEPARATOR) }

$git add -A

$git commit -m "made some improvements"

$git checkout master

$git merge test_branch_name

$git push

$git push heroku main

$heroku pg:reset DATABASE

$heroku run rake db:migrate

$heroku run rake db:seed

Question:

I would like to take information from another website. Therefore (maybe) I should make a request to that website (in my case a HTTP GET request) and receive the response.

How can I do this in Ruby on Rails?

If it is possible, is it a correct approach to use in my controllers?

Answer #1:

You can use Ruby’s Net::HTTP class:

require 'net/http'

url = URI.parse('http://www.example.com/index.html')
req = Net::HTTP::Get.new(url.to_s)
res = Net::HTTP.start(url.host, url.port) {|http|
  http.request(req)
}
puts res.body

Answer #2:
You could write a method to do this in the controller

  def api_request(type , url, body=nil, header =nil )
    require "net/http"
    uri = URI.parse(url)
    case type
    when :post
      request = Net::HTTP::Post.new(uri)
      request.body = body
    when :get
      request = Net::HTTP::Get.new(uri)
    when :put
      request = Net::HTTP::Put.new(uri)
      request.body = body
    when :delete
      request = Net::HTTP::Delete.new(uri)
    end
    request.initialize_http_header(header)
    #request.content_type = 'application/json'
    response = Net::HTTP.start(uri.host, uri.port, :use_ssl => uri.scheme == 'https') {|http| http.request request}
  end

Answer #3:
A general example of using Ruby Net::http

 url = URI.parse('https://google.com')
 req = Net::HTTP::Get.new(url.request_uri)
 http = Net::HTTP.new(url.host, url.port)
 http.use_ssl = (url.scheme == "https")
 response = http.request(req)
 puts response.body

Question: Should people store JSON object in the database file as a string?

Size is not so much of an issue, the ability to query and maintain the data however is.

gem install cassandra

cd ~/.rbenv
git pull
 and

cd ~/.rbenv/plugins/ruby-build/
git pull