OnMyList Blog: attachment_fu and s3 woes, or how I spent most of Friday

attachment_fu and s3 woes, or how I spent most of Friday

Andrew — Sat, 10 Nov 2007 04:32:00 -0500

At OML we use Amazon S3 for storage, when we launched the site Gravatar was very unreliable so we had to roll our own with attachment_fu, and it worked fairly well.

With our redesign we want to make all avatars square coz the site looks better that way, so I added a JavaScript image cropper to help you crop your uploaded pictures into squares. It didn’t take long to write and it worked fine in my local development machine. But I was using file_system in attachment_fu locally instead of S3. (Now in retrospect I should’ve setup my own test bucket on S3)... I switched it to S3 on the beta site and it stopped working, that is, the images don’t get cropped properly! After about 10 hours of tracing through attachment_fu and trying silly things such as writing my own with_image override in s3_backend.rb, in the end I only had to add a single line and a minor change. Here are the before and after code…

before:

  def crop2square(args)
    image2crop = find_or_initialize_thumbnail(:full)
    image2crop.with_image do |img|
      @data = img.crop("#{args[:width]}x#{args[:height]}+#{args[:x1]}+#{args[:y1]}")
    end
    attachment_options[:thumbnails].each { |suffix, size| create_or_update_thumbnail(@data, suffix, *size) }
  end

after:

  def crop2square(args)
    image2crop = find_or_initialize_thumbnail(:full)
    image2crop.temp_path = image2crop.create_temp_file
    image2crop.with_image do |img|
      @data = img.crop("#{args[:width]}x#{args[:height]}+#{args[:x1]}+#{args[:y1]}")
    end
    attachment_options[:thumbnails].each { |suffix, size| create_or_update_thumbnail(@data.path, suffix, *size) }
  end

I don’t really feel like explaining why this works right now, and if you’re having the same problem I’m sure you won’t care either and you just want to copy and paste the code and move onto your next problem.

Hope this helps…

"attachment_fu and s3 woes, or how I spent most of Friday" by DDDDepressionnnn

Thu, 20 Nov 2008 21:18:56 -0500

Depression Depression Depression aaaaaaaa HEEEEELP :( :( :( I hate winter! I want summer!

"attachment_fu and s3 woes, or how I spent most of Friday" by DDDepressionnn

Thu, 20 Nov 2008 13:29:11 -0500

There has come winter :( It became cold and cloudy! Mood very bad :( Depression Begins

"attachment_fu and s3 woes, or how I spent most of Friday" by Carl Youngblood

Mon, 22 Sep 2008 18:37:22 -0400

Care to post your javascript cropper? That would be very handy, if you are able to share it.

"attachment_fu and s3 woes, or how I spent most of Friday" by David Furber

Sat, 19 Apr 2008 15:04:58 -0400

THANK YOU!!! For those of you using the Kropper application, add this line to the crop! method: self.temp_path = self.create_temp_file Put it right before the comment: # call the appropriate crop method for the image processor we're using with attachment_fu Thanks again you saved me hours of attachment_fu debugging hell!

"attachment_fu and s3 woes, or how I spent most of Friday" by wilson

Tue, 15 Apr 2008 00:04:21 -0400

hey, where you have attachment_options[:thumbnails].each { |suffix, size| create_or_update_thumbnail(@data.path, suffix, *size) } I'm getting an error at the path reference: NoMethodError Exception: undefined method `path' for # when i run the debugger (rdb:1) p @data [CORRECT_FILENAME_HERE]= PNG 57x64=1x1 DirectClass 16-bit 643b It shows the right file but the path method isn't defined.. I'm using Rmagick 2.0 Any ideas?