I was trying to disable the timeout on the Mongo::Cursor class and the suggested approach (by them as well as in the mongoid google groups) is to invoke the #find method and pass the block (until the newer mongoid is out which take care of this stuff for us).

So I tried:

class Apple
  include Mongoid::Document
  field :color, type: String
end

Apple.create(color: "red")

Apple.collection.find({}, :timeout => false) do |c|
  puts "cursor: #{c}"
end

This gives the error: Collection#find must be invoked with a block when timeout is disabled

However, if I drop to the Mongo ruby drive "Collection" class (Mongo::Collection) it works:

Apple.collection.driver.find({}, :timeout => false) do |c|
  puts "worked!"
end

Is this the expected behavior? It seems like I should be able to call find on the collection but maybe that wasn't the intention, hence the "driver" which gives access to the raw Mongo::Collection. Just thought I'd mention this in case it is a bug and not "as designed" (it burned me for a little while).