Document updates using mongo-ruby-driver?

ruby-on-rails ruby mongodb mongodb-ruby nosql

given your example output, if you want to use the rewriting method it would be like this:

coll.update({"_id" => x["_id"]}, x)

or if you want to atomically change a value, it would be like this:

coll.update({"_id" => x["_id"]}, {"$set" => {"welcome" => "Hello There"}})

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