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Ruby

Posted by Ivan Bechev
Ivan Bechev
851 Points

Error when trying to upload image file with Paperclip.

Hi everyone. I;m stuck with that error, it doesn't allow me to upload image file to the server. The message I'm getting is: "1 error prohibited this picture from being saved: Asset has an extension that does not match its contents"

Here is my model:

class Picture < ActiveRecord::Base

belongs_to :album

  has_attached_file :asset, styles: {
    large: "800x800>", medium: "300x200>", small: "260x180>", thumb: "80x80#"
  }, :default_url => "/images/:style/missing.png" 

  validates_attachment :asset, :content_type => { :content_type => ["image/jpeg", "image/gif", "image/png"] }
end

I was trying to find solution, but so far have to success. I;ll very much appreciate if anyone can show me the solution, Thank you in advance.

Regards Ivan

6 Answers

Tim Knight
Tim Knight
28,888 Points
Tim Knight
Tim Knight
28,888 Points

It seems to me you do have a bug on your validates_attachment call you're including an array called content_type into a hash called content_type... you can adjust that to something like this

validates_attachment_content_type :asset, :content_type => ["image/jpeg", "image/gif", "image/png"]

Something I'll often do would be to set the content_type with a regular expression for all image mimetypes

validates_attachment_content_type :asset, :content_type => /\Aimage\/.*\Z/
Ivan Bechev
Ivan Bechev
851 Points

I've changed my code , but it still gives me the same error when I try to upload image.
By the way I'm using Windows 7 , if that matters,

Tim Knight
Tim Knight
28,888 Points
Tim Knight
Tim Knight
28,888 Points

Ivan, try uploading your error to something like https://imgur.com/ to share it on the forum.

Ivan Bechev
Ivan Bechev
851 Points
Ivan Bechev
Ivan Bechev
851 Points

Here is a link to a folder in my Dropbox. I've uploaded snapshots from my application there.

https://www.dropbox.com/sh/qckpj94qxezeul3/AAAykabwyR1KCzdx10sJ49NAa

Thanks

Tim Knight
Tim Knight
28,888 Points
Tim Knight
Tim Knight
28,888 Points

Seems there's an issue with some images when it comes to content type validation. There's a workaround on https://github.com/thoughtbot/paperclip/issues/1429 that involves creating an initializer.

Michael Rossiter
Michael Rossiter
2,715 Points
Michael Rossiter
Michael Rossiter
2,715 Points

I'm having the exact same issue - going to look into the initializer. Can see my problem here: http://pure-sierra-6675.herokuapp.com/paperclip_images

Michael Rossiter
Michael Rossiter
2,715 Points
Michael Rossiter
Michael Rossiter
2,715 Points

A couple things are going on:

  1. It works on Heroku for some images, but not all. For example, my downloaded LinkedIn image does not work. Most other images seem to.
  2. It does not work on localhost:3000. Not sure why. I just installed imagemagick, which I was hoping work. It did not. Spoofing does seem to be the issue.

It would be helpful to have a more beginner-friendly explanation of the github discussion.