Storing image using open URI and paperclip having size less than 10kb

Question

I want to import some icons from my old site. The size of those icons is less than 10kb. So when I am trying to import the icons its returning stringio.txt file.

require "open-uri"
class Category < ActiveRecord::Base
   has_attached_file :icon,  :path => ":rails_root/public/:attachment/:id/:style/:basename.:extension"
  def icon_from_url(url)
    self.icon = open(url)
   end    
end

In rake task.

   category = Category.new
   category.icon_from_url "https://xyz.com/images/dog.png"
   category.save

Answer 1

Try:

def icon_from_url(url)
  extname = File.extname(url)
  basename = File.basename(url, extname)

  file = Tempfile.new([basename, extname])
  file.binmode

  open(URI.parse(url)) do |data|  
    file.write data.read
  end

  file.rewind

  self.icon = file
end

Answer 2

To override the default filename of a "fake file upload" in Paperclip (stringio.txt on small files or an almost random temporary name on larger files) you have 2 main possibilities:

Define an original_filename on the IO:

def icon_from_url(url)
  io = open(url)
  io.original_filename = "foo.png"
  self.icon = io
end

You can also get the filename from the URI:

io.original_filename = File.basename(URI.parse(url).path)

Or replace :basename in your :path:

has_attached_file :icon, :path => ":rails_root/public/:attachment/:id/:style/foo.png", :url => "/:attachment/:id/:style/foo.png"

Remember to alway change the :url when you change the :path, otherwise the icon.url method will be wrong.

You can also define you own custom interpolations (e.g. :rails_root/public/:whatever).

Answer 3

You are almost there I think, try opening parsed uri, not the string.

require "open-uri"
class Category < ActiveRecord::Base
   has_attached_file :icon,  :path =>:rails_root/public/:attachment/:id/:style/:basename.:extension"
  def icon_from_url(url)
    self.icon = open(URI.parse(url))
  end    
end

Of course this doesn't handle errors