Using a different Couch DB for each web-request with CouchRest
If data for each different account in your web application is stored in a separate CouchDB database, you need a way to tell your web app which database to use for that request.
Here’s solution using CouchRest and Ruby, based on a discussion from the CouchRest Google Group.
class RequestSpecificDocument < CouchRest::ExtendedDocument
def self.database
Thread.current[:request_db]
end
endAll models which need to use the request-specific database should derive from this:
class Article < RequestSpecificDocument
# normal stuff for your CouchRest document here.
endSo in your application controller (if you’re using Rails), you might add a before_filter which does something like this:
def set_database
# determine the database_name from the host, url or whatever.
svr = CouchRest::Server.new("http://127.0.0.1:5984")
couch_db = CouchRest::Database.new(svr, database_name)
Thread.current[:request_db] = couch_db
end
