File upload Base64 encoded string in PaperClip using Rails

Question

I have at base64 encoded string of a image file. I need to save it using Paper Clip

My Controller code is

 @driver = User.find(6)
 encoded_file = Base64.encode64(File.open('/pjt_path/public/test.jpg').read)
 decoded_file = Base64.decode64(encoded_file)

 @driver.profile_pic =  StringIO.open(decoded_file)
 @driver.save

In my user model

 has_attached_file :profile_pic, :styles => { :medium => "300x300>", :thumb => "100x100>" }, :default_url => '/icon.jpg'

Currently the file is saved as a text file(stringio.txt). But when I change the extension to JPG I can view it as image. How can I name the image correctly using StringIO.

I am having rails 3.2, ruby 1.9.2, paperclip 3.0.3

score 14 · Accepted Answer · answered May 14 '12 at 14:34

14

I fixed the issue by using

encoded_file = Base64.encode64(File.open('/pjt_path/public/test.jpg').read)
decoded_file = Base64.decode64(params[:encoded_image])
begin
  file = Tempfile.new(['test', '.jpg']) 
  file.binmode
  file.write decoded_file
  file.close
  @user.profile_pic =  file
  if @user.save
    render :json => {:message => "Successfully uploaded the profile picture."}
  else
    render :json => {:message => "Failed to upload image"}
  end
ensure
  file.unlink
end

answered May 14 '12 at 14:34

Amal Kumar S

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can u please post more of your code? I found it very intresting! – Em Sta Jun 26 '13 at 18:19
1

@EmSta - I have posted the complete code here. This code is added in my controller function. Please let me know what more code you needed – Amal Kumar S Jun 27 '13 at 05:15
I opend an new question: http://stackoverflow.com/questions/17336788/paperclip-upload-an-image-encoded-with-base64 Maybe you can help me @AmalKumarS – Em Sta Jun 27 '13 at 07:11
@EmSta - its showing "This question was voluntarily removed by its author." – Amal Kumar S Jun 28 '13 at 04:56
on this version how can I handle multiple extention? – Sebastian Corneliu Vîrlan Oct 07 '15 at 13:43
I am not sure, is this what you actually need. From the file path given you can get the extention e.g.: /pjt_path/public/test.jpg Use this extension in the file = Tempfile.new(['test', '.jpg']) section – Amal Kumar S Oct 08 '15 at 05:43
File.extname("example.pdf/pjt_path/public/test.pdf") will return the extension of the file – Amal Kumar S Oct 08 '15 at 05:47

score 2 · Answer 2 · answered May 10 '12 at 13:19

Try setting the :path/:url option of has_attached_file and explicitly overriding the extension:

http://rdoc.info/gems/paperclip/Paperclip/ClassMethods#has_attached_file-instance_method

respectively

http://rdoc.info/gems/paperclip/Paperclip/Storage/Filesystem

File upload Base64 encoded string in PaperClip using Rails

2 Answers2