我有一个模型，其数据在呈现为json时不应该包含.因此，我实现了类的as_json方法以适当地执行操作.问题是，当其他与此模型关联的模型呈现json时，我的自定义as_json没有被调用.
class Owner < ActiveRecord::Base
has_one :dog
def as_json(options={})
puts "Owner::as_json"
super(options)
end
end
class Dog < ActiveRecord::Base
belongs_to :owner
def as_json(options={})
puts "Dog::as_json"
options[:except] = :secret
super(options)
end
end
Loading development environment (Rails 3.0.3)
ruby-1.9.2-p136 :001 > d = Dog.first
=>#<Dog id: 1, owner_id: 1, name: "Scooby", secret: "I enjoy crapping everwhere">
ruby-1.9.2-p136 :002 > d.as_json
Dog::as_json
=> {"dog"=>{"id"=>1, "name"=>"Scooby", "owner_id"=>1}}
ruby-1.9.2-p136 :004 > d.owner.as_json(:include => :dog)
Owner::as_json
=> {"owner"=>{"id"=>1, "name"=>"Shaggy", :dog=>{"id"=>1, "name"=>"Scooby", "owner_id"=>1, "secret"=>"I enjoy crapping everwhere"}}}
谢谢你的帮助