Question

Is there some sort of find_by_sql equivalent for mongoid, where you pass a mongo query and it materializes Mongoid::Document s from the results?

Answer 1

Mongoid wraps the Collection object to return objects of the proper class.

So, if User is a Mongoid model:

cursor = User.collection.find({}, {}) # Just like the Ruby driver...
records = cursor.to_a # An array of User objects

Edit to add: It actually wraps Mongo’s Cursor class too. See here:

def each
  @cursor.each do |document|
    yield Mongoid::Factory.build(@klass, document)
  end
end