find_by_sql相当于mongoid？

Question

是否有某种类型的find_by_sql等效于mongoid,你传递一个mongo查询并从结果中实现Mongoid :: Document s？

Answer 1

Mongoid包装Collection对象以返回适当类的对象.

所以,如果User是Mongoid模型:

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

编辑添加:它实际上也包装了Mongo的Cursor类.看这里:

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