有没有办法在Mongoid中覆盖模型的setter或getter？就像是：
class Project
include Mongoid::Document
field :name,:type => String
field :num_users,type: Integer,default: 0
key :name
has_and_belongs_to_many :users,class_name: "User",inverse_of: :projects
# This will not work
def name=(projectname)
@name = projectname.capitalize
end
end
解决方法
def name=(projectname) self[:name] = projectname.capitalize end