Well, I have installed several Rails plugins but I was bummed when I tried to install the re-captcha plugin from Github. The command belwo just fails silently and creates an empty folder “recaptcha” under vendor/plugins:

ruby script/plugin install git://github.com/ambethia/recaptcha.git

Well, after a little googling, I found out here that using a http moniker instead of the git moniker would solve the issue like so:

ruby script/plugin install http://github.com/ambethia/recaptcha.git

Well, no  luck. Same empty folder. So, now reading the comment from Tom in the above article, I found out that what really works is the adding a trailing slash at the end of the above command like so:

ruby script/plugin install http://github.com/ambethia/recaptcha.git/

Bliss at last. The plugin directory has files now. Hope you did not have to spend too much time searching for this…

Update (02/22/2010):

I have noticed (so have many other users) that somewhere around Feb. 2010, the above method of installing the plugins do not work. I am investigating the issue with respect to different rails / ruby versions. I have tried with Rails 2.3.2, 2.3.5/Ruby 1.8.6, 1.8.7 and I have the issue. I will post an update if I find a solution. Till then, just download the zip file from Github downloads and copy it to your vendor/plugins folder. You can try cloning the github repo for the plugin as well if you choose to do so.

If you are using Ruby 1.9, try to see if the following fix resolves the issue:

https://rails.lighthouseapp.com/projects/8994-ruby-on-rails/tickets/2018

Well, long story short, I have been going crazy trying to make attachment_fu upload a image file greater than 10KB in size on Windows. It keeps showing an error message “Size is not in the list”. Turns out that the size parameter needs to explicitly set to the following:

has_attachment  :content_type => :image, :size => 0.kilobytes..1.gigabytes

The important part is that you have to specify the minimum limit as 0.kilobytes or it will not work.

Checkout some of the other attachment_fu gotchas.