title: How to save an image in paperclip via URL
body: <p>In rails 3.2.13, i am trying to save some bulk data by uploading an csv file. While saving it i need to save some images also related to this data. I need to save this image by fetching from URL. How to save this kind of image using <code>paperclip</code>? How to provide an image data in csv file?</p>
  
  <p>Eg: I have one User model &amp; it has one profile_picture association, first i need to save the image to assets table &amp; associate it to user model.</p>
  
  <p>I have tried <a href="https://stackoverflow.com/questions/4830122/paperclip-fetch-image-directly-via-url">Paperclip fetch image directly via url</a>
   &amp; also i have installed <strong>gem install rest-open-uri</strong> but it is showing some error.</p>
  
  <p>Errors are, first i got installation error for rest-open-uri after installing it again i got <code>AbstractController::ActionNotFound (The action 'create' could not be found for UsersController)</code></p>
  
  <p>Please help me to solve this issue. </p>