# Attachment\_fu thumbnail not created **URL:** \ **Category:** Rails\ **Created:** [April 8, 2007, 10:55pm UTC](https://www.ruby-forum.com/t/attachment-fu-thumbnail-not-created/91425 "2007-04-08T22:55:24Z")\ **Posts on this page:** 14\ **Page:** 1
**Author:** ![jko170](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/d07c76/32.png) [@jko170](https://www.ruby-forum.com/u/jko170)\ **Post date:** [April 8, 2007, 10:55pm UTC](https://www.ruby-forum.com/t/attachment-fu-thumbnail-not-created/91425/1 "2007-04-08T22:55:24Z")
I followed the instructions on Mike C.'s weblog and everything works perfectly except the thumbnail column in my DB is alwas NULL. I’m using S3 as my storage system. Anyone else having this issue with thumbnails? has\_attachment :content\_type =\> :image, :storage =\> :s3, :max\_size =\> 500.kilobytes, :resize\_to =\> ‘150x150\>’, :thumbnails =\> { :thumb =\> ‘40x40\>’ }, :processor =\> ‘Rmagick’ validates\_as\_attachment ---
**Author:** ![jko170](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/d07c76/32.png) [@jko170](https://www.ruby-forum.com/u/jko170)\ **Post date:** [April 9, 2007, 7:13am UTC](https://www.ruby-forum.com/t/attachment-fu-thumbnail-not-created/91425/2 "2007-04-09T07:13:00Z")
I first started out with trying to use ImageScience. I followed the directions correctly on their website and within my app when I try to upload an image it shuts down mongrel/server with this error: /Users/Bob/work/app/trunk/vendor/plugins/attachment\_fu/lib/ technoweenie/attachment\_fu/processors/image\_science\_processor.rb:14: [BUG] Bus Error ruby 1.8.4 (2005-12-24) [i686-darwin8.8.1] Abort trap Fair enough, I’ll just try minimagick and see if that works. When I run: gem install mini\_magick I get this error: ERROR: While executing gem … (Errno::EACCES) Permission denied - /usr/local/lib/ruby/gems/1.8/cache/ mini\_magick-1.2.0.gem So it looks like Rmagick is the only one that is working but attachment\_fu is not saving thumbnails. Ideally I would like to use ImageScience but I cannot spend all day working on this image upload problem. Anyone know what I’m doing wrong? ---
**Author:** ![jko170](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/d07c76/32.png) [@jko170](https://www.ruby-forum.com/u/jko170)\ **Post date:** [April 9, 2007, 5:55pm UTC](https://www.ruby-forum.com/t/attachment-fu-thumbnail-not-created/91425/3 "2007-04-09T17:55:10Z")
Anyone know why the thumbnails are not being created while everything else is working fine? ---
**Author:** ![jko170](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/d07c76/32.png) [@jko170](https://www.ruby-forum.com/u/jko170)\ **Post date:** [April 13, 2007, 1:18pm UTC](https://www.ruby-forum.com/t/attachment-fu-thumbnail-not-created/91425/4 "2007-04-13T13:18:57Z")
Hello, On 9 Apr 2007, at 16:53, jko170 wrote: > Anyone know why the thumbnails are not being created while everything > else is working fine? I doubt this is the answer, but I thought I’d link it just in case it helps: [http://groups.google.com/group/rubyonrails-talk/browse\_thread/thread/](http://groups.google.com/group/rubyonrails-talk/browse_thread/thread/) 3c86abb8daa12cc6/079b85c99b22be2f Regards, Andy S. ---
**Author:** ![jko170](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/d07c76/32.png) [@jko170](https://www.ruby-forum.com/u/jko170)\ **Post date:** [April 14, 2007, 2:08am UTC](https://www.ruby-forum.com/t/attachment-fu-thumbnail-not-created/91425/5 "2007-04-14T02:08:38Z")
try installing mini\_magick again but put a sudo in front: sudo gem install mini\_magick are you on a mac ? I assume you are trying to install it locally and that you have the appropriate permissions. ---
**Author:** ![jko170](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/d07c76/32.png) [@jko170](https://www.ruby-forum.com/u/jko170)\ **Post date:** [April 15, 2007, 8:24pm UTC](https://www.ruby-forum.com/t/attachment-fu-thumbnail-not-created/91425/6 "2007-04-15T20:24:46Z")
Thanks for the replies. I installed mini magick correctly and thumbnails are still not generated. I doesn’t matter what image processor I use so I’m assuming that’s not the problem. ---
**Author:** ![jko170](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/d07c76/32.png) [@jko170](https://www.ruby-forum.com/u/jko170)\ **Post date:** [April 14, 2007, 5:14pm UTC](https://www.ruby-forum.com/t/attachment-fu-thumbnail-not-created/91425/7 "2007-04-14T17:14:29Z")
jko170 wrote: > Anyone know why the thumbnails are not being created while everything > else is working fine? I ran into this a few weeks ago using a Flash upload widget, and it turned out that the uploader wasn’t sending the proper MIME type – everything was application/octet-stream, so attachment\_fu wasn’t recognizing the file as an image. I just rewrote the uploaded\_data method of attachment\_fu to check against a table mapping file extensions to MIME types when it found a file type of application/octet-stream. The hack seems to work for my purposes. –Al Evans ---
**Author:** ![jko170](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/d07c76/32.png) [@jko170](https://www.ruby-forum.com/u/jko170)\ **Post date:** [April 15, 2007, 9:00pm UTC](https://www.ruby-forum.com/t/attachment-fu-thumbnail-not-created/91425/8 "2007-04-15T21:00:51Z")
Here is all my code incase someone can spot something: create\_table “photos” do |t| t.column :user\_id, :integer, :null =\> false t.column :content\_type, :string t.column :filename, :string t.column :thumbnail, :string t.column :size, :integer t.column :width, :integer t.column :height, :integer end class Photo \< ActiveRecord::Base belongs\_to :user has\_attachment :content\_type =\> :image, :storage =\> :s3, :max\_size =\> 500.kilobytes, :resize\_to =\> ‘150x150\>’, :thumbnails =\> { :thumb =\> [50, 50], :geometry =\> ‘x50’ }, :processor =\> ‘MiniMagick’ validates\_as\_attachment end def create @user = User.new(params[:user]) @photo = Photo.new(params[:photo]) @user.photo = @photo ``` if @user.save && @photo.save flash[:notice] = 'User was successfully created.' redirect_to user_url(@user) else render :action => "new" end ``` end ---
**Author:** ![jko170](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/d07c76/32.png) [@jko170](https://www.ruby-forum.com/u/jko170)\ **Post date:** [April 16, 2007, 12:17am UTC](https://www.ruby-forum.com/t/attachment-fu-thumbnail-not-created/91425/9 "2007-04-16T00:17:17Z")
Hi, You need to have a ‘parent\_id’ column in your photos table. This one had me scratching my head for a few hours too until I stumbled across this requirement of the plugin. See the tutorial: [http://clarkware.com/cgi/blosxom/2007/02/24](http://clarkware.com/cgi/blosxom/2007/02/24) He doesn’t mention that parent\_id is required however. Guy ---
**Author:** ![jko170](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/d07c76/32.png) [@jko170](https://www.ruby-forum.com/u/jko170)\ **Post date:** [April 16, 2007, 8:38am UTC](https://www.ruby-forum.com/t/attachment-fu-thumbnail-not-created/91425/10 "2007-04-16T08:38:46Z")
That fixed it. Thanks Guy! One more quick question: Do you know how to make the thumbnail and images resize to an exact size? I guess that would require cropping? ---
**Author:** ![jko170](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/d07c76/32.png) [@jko170](https://www.ruby-forum.com/u/jko170)\ **Post date:** [April 26, 2007, 4:02pm UTC](https://www.ruby-forum.com/t/attachment-fu-thumbnail-not-created/91425/11 "2007-04-26T16:02:42Z")
hi just wondering if you solved this proble. i am having the same issue ---
**Author:** ![jko170](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/d07c76/32.png) [@jko170](https://www.ruby-forum.com/u/jko170)\ **Post date:** [May 26, 2009, 3:58pm UTC](https://www.ruby-forum.com/t/attachment-fu-thumbnail-not-created/91425/12 "2009-05-26T15:58:26Z")
mr\_robot wrote: > hi just wondering if you solved this proble. i am having the same issue 'kay; same problem (thumbnails not being generated); happened just by moving from a model to another (from app/models/asset.rb to app/models/item.rb). columns are just fine; but still getting the same problem. I just don’t know what’s the problem, is there any model caching or something like that in there ? weird… ---
**Author:** ![jko170](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/d07c76/32.png) [@jko170](https://www.ruby-forum.com/u/jko170)\ **Post date:** [June 26, 2009, 5:10pm UTC](https://www.ruby-forum.com/t/attachment-fu-thumbnail-not-created/91425/13 "2009-06-26T17:10:32Z")
this is a great thread and helped me get my hands around debugging this thing. some more tips – 1 here’s another thing to look for with respect to parent\_id: if you’re using uuid (string) instead of id (integer) make sure your parent\_id is also a string and not an integer, otherwise you won’t get thumbnails 2 if you’re a windows user, ruby is faster than windows so for your create and update actions (assuming REST) make sure you stick in a sleep(2) to allow windows to catch up to your rails app when you post: def create sleep(2) … def update sleep(2) … ---
**Author:** ![jko170](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/d07c76/32.png) [@jko170](https://www.ruby-forum.com/u/jko170)\ **Post date:** [May 26, 2009, 4:29pm UTC](https://www.ruby-forum.com/t/attachment-fu-thumbnail-not-created/91425/14 "2009-05-26T16:29:51Z")
aa bb wrote: > mr\_robot wrote: > > > hi just wondering if you solved this proble. i am having the same issue > > 'kay; same problem (thumbnails not being generated); > happened just by moving from a model to another (from > app/models/asset.rb to app/models/item.rb). > columns are just fine; but still getting the same problem. > > I just don’t know what’s the problem, is there any model caching or > something like that in there ? weird… 'aight… the fuc\*$$۬!!- column parent\_id has to be NULL… and not at default 0