CouchRest is based on [CouchDB’s couch.js test library](svn.apache.org/repos/asf/incubator/couchdb/trunk/share/www/script/couch.js), which I find to be concise, clear, and well designed. CouchRest lightly wraps CouchDB’s HTTP API, managing JSON serialization, and remembering the URI-paths to CouchDB’s API endpoints so you don’t have to.
CouchRest’s lighweight is designed to make a simple base for application and framework-specific object oriented APIs.
sudo gem install jchris-couchrest -s http://gems.github.com
The core of Couchrest is Heroku’s excellent REST Client Ruby HTTP wrapper. REST Client takes all the nastyness of Net::HTTP and gives is a pretty face, while still giving you more control than Open-URI. I recommend it anytime you’re interfacing with a well-defined web service.
The most complete documentation is the spec/ directory. To validate your CouchRest install, from the project root directory run ‘rake`, or `autotest` (requires RSpec and optionally ZenTest for autotest support).
Quick Start:
# with !, it creates the database if it doesn't already exist @db = CouchRest.database!("http://localhost:5984/couchrest-test") response = @db.save({:key => 'value', 'another key' => 'another value'}) doc = @db.get(response['id']) puts doc.inspect
Bulk Save:
@db.bulk_save([ {"wild" => "and random"}, {"mild" => "yet local"}, {"another" => ["set","of","keys"]} ]) # returns ids and revs of the current docs puts @db.documents.inspect
Creating and Querying Views:
@db.save({ "_id" => "_design/first", :views => { :test => { :map => "function(doc){for(var w in doc){ if(!w.match(/^_/))emit(w,doc[w])}}" } } }) puts @db.view('first/test')['rows'].inspect
CouchRest::Model is a module designed along the lines of DataMapper::Resource. By subclassing, suddenly you get all sorts of powerful sugar, so that working with CouchDB in your Rails or Merb app is no harder than working with the standard SQL alternatives. See the CouchRest::Model documentation for an example article class that illustrates usage.