I kept on getting:
/usr/bin/gem:14: undefined method `ruby_version' ...
on a debian machine whenever I tried using gem. I ended up commenting out a few lines, then installing the latest version of rubygems-update from here with:
gem install rubygems-update-1.3.1.gem
Looks like it worked, but not for the real problem I was trying to solve. This was to try and solve this problem:
ActionView::TemplateError (undefined method `[]'
Which was solved thanks to these pages:
Re: [SOVED] AJAX error: ActionView::TemplateError (undefined method `[]’..
and
undefined method for enumerable
The actual fix was to put:
unless '1.9'.respond_to?(:force_encoding)
String.class_eval do
begin
remove_method :chars
rescue NameError
# OK
end
end
endat the beginning of config/environment.rb.
After briefly thinking about Javascript parsers, I did a quick search for CSS parsers, and found, as El Guapo might say, a plethora of piñatas.
Here’s a few which caught my attention:
I’m really intrigued that there are so many parsers written in Ruby.
Just dabbling with Rails and Mongrel, its actually quite easy to get started:
apt-get install rails mongrel
mkdir rails_test
cd rails_test
rails .
mongrel_rails -p 9000 start
I’m still not sold on model view controller (MVC) methodology though.
After reading up on Ragel, I came across Hpricot, “a fast, flexible HTML parser written in C”. I read a little bit more, and it sounds like Hpricot is a mix of jQuery selectors, XPath, and DOM dot paths. Sounds very cool!
But just how fast is it? And can it be separated from Ruby? Should it be? The Hpricot Ragel stuff is here, and should contain a great set of ragel examples! And looks good, it appears that the ragel stuff has been completely separated from the ruby stuff, which makes it easier for me to examine.
I’m confused by the fact that there is java code in the repository. Hmmm.
More notes at the Hpricot Docunext Wikipage.