Adding find_and_modify to MongoMapper and the simplicity of plugins

I've been using MongoMapper as my ORM for a while now, but for some reason find_and_modify() is conspicuously absent. find_and_modify is important for any situation in which you want to lock a record while you work with it, say by marking a state property

So I worked up a little MongoMapper pluggin that did the trick:



Then to use it, simply, add the plugin to your document model:


class FindAndModifyTest
   include MongoMapper::Document
   plugin FindAndModifyPlugin
end

Here's an rspec test that shows how it works:





Voilà

Kevin