模型关联Rails 4

Question

在开始编码之前我想知道你的意见。

现在我有了以下模型

用户模型

class User < ActiveRecord::Base
  has_many :people, :dependent => :destroy 
    devise :database_authenticatable, :confirmable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable
end

人模型

class Person < ActiveRecord::Base
    belongs_to :user
    has_many :diseases, :dependent => :destroy #if you delete a person you also delete all diseases related
    has_many :appointments, :dependent => :destroy

    validates_presence_of :name, :email
    validates :name, :length => {:maximum => 50, :too_long => "name is too long"}
    VALID_EMAIL_REGEX = /\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]+\z/i
    validates :email, format: { :with => VALID_EMAIL_REGEX , message: "is invalid" }

    accepts_nested_attributes_for :diseases, :reject_if => proc { |attributes| attributes['name'].blank? }

end

它必须这样运作：

一个使用者可能有n个受抚养人(儿童、残疾人.)但与此同时，这个人应该能够拥有自己的使用者和依赖的人。

有什么建议吗？我是否应该在用户和个人之间使用has_many_and_belongs_to？

谢谢!

请将用户视为支持者，将个人视为受抚养人--这就是我所想的，如下所示：

class Relationship
  belongs_to :user
  belongs_to :person
end

class User
  has_many :relationships
  has_many :people, through: :relationships
end

class Person
  has_many :relationships
  has_many_and_belong_to :users, through: :relationships
end

Answer 1

has_many :through关联应该在这种情况下工作。

我对User和Person之间的区别还不十分清楚，所以我将暂时获得一些许可，并处理Person模型，但是您可以很容易地接受这个想法，并将其应用于User。

连接模型可能类似于，

class Relationship
  belongs_to :dependant, class_name: 'Person'
  belongs_to :supporter, class_name: 'Person'
end

class User
  ...
  has_many :relationships
  has_many :dependants, through: :relationships
  has_many :supporters, through: :relationships
end