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acts_as_versioned is a great plugin for versioning a set of model attributes transparently every time you save. The plugin seems to be built with exclusion in mind (version all except these) but to get it to work only on a specific set of columns, this simple trick can be applied: class Foo [:description_t] def versioned_attributes; [...]
If you find capistrano’s release directory naming conventions hard to use, a great alternative is to base releases on your svn tags. It turns out that implementing this in cap2 is quite simple. Unfortunately I can’t quite figure out how to turn this into a library so at this point it exists as a cut-n-paste [...]
This is a simple trick based on the idea that everything in ruby returns a result. By using the block syntax we can do a series of expensive operations and cache the result somewhere. Here I’ve shown the result cached in an instance variable but it may just as well be something more exotic. def [...]
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