Comments on: regenerate paperclip thumbnails

By: Andre Durao

Andre Durao — Fri, 27 Nov 2009 14:14:44 +0000

Thanks It really save me precious time!

By: Ethan

Ethan — Fri, 24 Jul 2009 00:56:59 +0000

Hi, you mention .reprocess! on the above comments.
How would I use .reprocess! on my application? Is it used on a rake task?
Also, how can we save the Geometry into the database? Can you point me to a tutorial on how to do that?
Thanks a lot!

By: Cómo evitar la regeneración de thumbnails con attachment_fu — Jaime Iniesta - Programador web freelance Ruby on Rails

Wed, 20 Aug 2008 09:15:20 +0000

[...] Sería interesante mirarlo más en profundidad para que sí lo haga en caso de que le estemos pasando un nuevo fichero de imagen, pero por el momento me vale para mis propósitos… y de todos modos quizá es hora de irse cambiando a paperclip, que por lo que tengo entendido, no tiene este comportamiento… aunque tampoco es del todo cómodo porque he leído que para regenerar los thumbnails en paperclip es necesario lanzar una tarea rake. [...]

By: Nik

Nik — Tue, 29 Jul 2008 22:10:02 +0000

@Dan: I’m not sure, we’re all on OS X here.

Although, it does sound suspiciously like you might have forgotten to restart your server…. (to load the plugin)

By: Dan

Dan — Tue, 29 Jul 2008 13:48:01 +0000

I have been trying to use Paperclip with Windows, but keep getting an error that says “has_attached_file” is an undefined method. Any idea what is going wrong, or whether I’m missing something here?

By: aurels

aurels — Tue, 29 Jul 2008 08:11:55 +0000

I found my way simply using File:

my_model.file = File.new(“/path/to/file.pdf”)
my_model.save

;-)

By: aurels

aurels — Tue, 29 Jul 2008 07:23:54 +0000

Hi!

I discovered Paperclip one week ago and I’m already in love with it!

Does someone knows if it’s possible to link a file to a paperclip-enabled model from the server’s filesystem (not using a user file field input). If yes, how?
I don’t know if I’ve to use File, TempFile or …

Thanks!

By: Nik

Nik — Thu, 10 Jul 2008 03:36:35 +0000

@Dios: All it does is use ImageMagick on the command line, so it should be easy enough to make changes so that it passes the correct arguments through to “convert”. (check lib/paperclip/thumbnail.rb)

By: Dios

Dios — Thu, 10 Jul 2008 03:27:01 +0000

Is there a way to change dpi setting for jpegs?
Or compression quality for that matter?

By: Nik

Nik — Sun, 06 Jul 2008 02:07:42 +0000

@tim: Aah, thanks for that! .reprocess! is actually what I was looking for :)

By: Tim Haines

Tim Haines — Sat, 05 Jul 2008 07:54:49 +0000

Hey Nik,

I’ve been using Paperclip quite a bit. You can regen thumbs by calling .reprocess! On some classes I’m setting up custom widths and heights and then reprocessing the thumbs when the model is saved..

There’s some other nice stuff that isn’t well documented yet, such as setting the thumb width and height via proc, and saving the geometry as an additional column.

Not that it will effect you guys – but there’s a few gotch’yas on windows too. The plugin doesn’t work very nicely with tempfiles on Windows. You need to set binmode when you open the files, and pull a couple of other tricks..

Pretty sweet plugin though – I like it for it’s simplicity. We’ve been feeding it with swfupload.

Tim.