ruby-on-rails – 设置a:has_many:通过belongs_to关联Ruby on
发布时间:2020-12-16 19:13:02 所属栏目:百科 来源:网络整理
导读:我有三个模型,每个模型都有以下关联: class Model1 ActiveRecord::Base has_many :model2s has_many :model3sendclass Model2 ActiveRecord::Base belongs_to :model1 has_many :model3s,:through = :model1 # will this work? is there any way around thi
我有三个模型,每个模型都有以下关联:
class Model1 < ActiveRecord::Base has_many :model2s has_many :model3s end class Model2 < ActiveRecord::Base belongs_to :model1 has_many :model3s,:through => :model1 # will this work? is there any way around this? end class Model3 < ActiveRecord::Base belongs_to :model1 has_many :model2s,:through => :model1 # will this work? is there any way around this? end 正如您在评论文本中所看到的,我已经提到了我需要的内容. 解决方法
您只需创建访问它的方法
class Model2 < ActiveRecord::Base belongs_to :model1 def model3s model1.model3s end end 或者,您可以将model3s方法委托给model1 class Model2 < ActiveRecord::Base belongs_to :model1 delegate :model3s,:to => :model1 end (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |