Yehuda Katz is a member of the Ember.js, Ruby on Rails and jQuery Core Teams; he spends his daytime hours at the startup he founded, Tilde Inc.. Yehuda is co-author of best-selling jQuery in Action and Rails 3 in Action. He spends most of his time hacking on open source—his main projects, like Thor, Handlebars and Janus—or traveling the world doing evangelism work. He can be found on Twitter as @wycats and on Github.

Merb RC5 (Final RC!)

Today, we’re releasing the final RC before 1.0 final ships at RubyConf. Again, the vast majority of the changes were bugfixes, and there were some concrete improvements as well:

  • The Merb spec suite was modified to run correctly on JRuby and Windows. All specs pass :)
  • Merb action-args now has support for jruby. Unfortunately, it doesn’t work with actions defined via define_method (this will be reported to jruby for a fix).
  • Webrat support is included out of the box with Merb. It currently requires the HEAD version of webrat, but we’re told they’ll be releasing a new version at RubyConf. See below for some webrat examples.
  • We now have a nightly gem server, hosted at At the moment, we release the next version every night (for instance, last nigh we released 0.9.13), which means you need to manually remove the merb gems before updating. Soon, we’ll be releasing 0.9.13.xxxx, so you’ll be able to run gem cleanup to remove old nightlies.
  • The goal with the nightly server is for people to use nightlies for riding edge as opposed to trying to install out of git itself. Trying to install out of git has its share of issues compared with installing from rubygems. To install from the remote gem server, either do gem install merb –source –source or add to your gem sources via gem source –add.
  • We put some work into the bundling system (as I previewed last week). To use bundling, simply make sure you have a gems directory in your application, then run thor merb:gem:install merb. This will install merb and all its dependencies, as well as binary scripts to work with the gems in Merb.root/gems. To run Merb, you run bin/merb. Note that you’ll probably need to install mongrel as well, via thor merb:gem:install mongrel if you want to use the bare merb command.
  • The view helpers were converted to use nokogiri and fallback on rexml when nokogiri is not available. have_selector now will take a CSS3 compatible selector, as opposed to the somewhat buggy and non-compliant hpricot selector.
  • have_tag and match_tag convert the attributes to a CSS selector in the background. We left have_tag and match_tag in for backward compatibility, although, it is advisable to use have_selector over have_tag. 
  • It is possible that have_tag / match_tag do not behave exactly the same way as a few bugs in the logic were fixed by moving over to a nokogiri back end.
  • As a result of this work, we have now marked all test methods with their API level, which should be locked as of 1.0.
We’re still on track for 1.0 final at RubyConf. The remaining major tasks are:
  • fully vet the test suite so that it can be used moving forward for all 1.x.x releases
  • work on the merb server to handle graceful shutdown of worker threads, as well as –restart to encapsulate the idiom of startup=>graceful kill.
  • go through the remaining tickets on LightHouse and fix them or defer to 1.x

One Response to “Merb RC5 (Final RC!)”

> See below for some webrat examples.

:( No webrat examples were included below.

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