CODEWITHSUNDEEP
ruby-on-railsrubycloudinary
fanadewi
fanadewi

Reputation: 21

How to check if image exists in given url or not?

This is the cloudinary link.

http://res.cloudinary.com/dm1hql92i/raw/upload/c_fill,h_200,w_200/%7B%7D

I want to check if the image exists or not in that link with ruby.

Upvotes: 1

Views: 2456

Answers (2)

dcts
dcts

Reputation: 1639

For some reason Ganesh's answer didnt work for me, here is my approach:

def image_exists?(url)
  response = {}
  uri = URI(url)
  Net::HTTP.start(uri.host, uri.port, :use_ssl => uri.scheme == 'https') do |http|
    request = Net::HTTP::Get.new uri
    response = http.request request # Net::HTTPResponse object
  end
  return response.content_type.starts_with?("image")
end

Upvotes: 1

Ganesh
Ganesh

Reputation: 2004

You will come to know that by checking Content-Type which is present in HTTP header

Please refer following code snippet.

require 'net/http'
require 'uri'

def image_exists?(url)
  url = URI.parse(url)
  http = Net::HTTP.start(url.host, url.port)

  http.head(url.request_uri)['Content-Type'].start_with? 'image'
end

url = "http://res.cloudinary.com/dm1hql92i/raw/upload/c_fill,h_200,w_200/%7B%7D"

image_exists?(url)
 => true

url = "http://guides.rubyonrails.org/getting_started.html"

image_exists?(url)
 => false

Upvotes: 3

Related Questions