That's one of the reason why I can't stand Django anymore, being Rails programmer for few years.
FYI, Rails' mail_to supports similar mechanism for years.
FYI, Rails' mail_to supports similar mechanism for years.
Anyways it isn't hard to write such plugins.
Seriously, I'm not saying that Rails is better than Django.
I'm sure there's a set of tasks where Django is much more better at than Rails. I'm just saying that I can't stand it that I have to write plugins for pretty standard stuff.
There could be various techniques for preventing bots, and this implementation is just one of them.
In my opinion framework should include stuff which is really standard, and best practice.
I agree that Rails shouldn't include this in the core.
Regardless, I don't have to write this code, core or not core. That's the problem. It really adds up if you have to spend time on such small stuff.
Also, by the way, but I'm unable to download this, and there are no tests for this, as well as it clearly breaks the XHTML/JavaScript convention.
Thus, even if it's easy to write, it's not easy enough to pluginize it, make accessible for other developers, write tests and keep XHTML/JavaScript separation.