我拥有用户和项目。 用户可以拥有许多项目和项目, 用户可以拥有许多用户。 现在项目有一位特定的用户作为作者或创作者, 也就是说, 项目有一位创作者, 而创作者也是一位用户。 我如何在铁路上描述这种关系!!
#Project
has_and_belongs_to_many :users
belongs_to :author, :class_name => "User"
#User
has_and_belongs_to_many :projects
has_many :authored_projects, :class_name => "Project", :foreign_key => "author_id"
您需要在工程表格中添加 作者_ id 。
所以您可以使用 : project. authers , user. authents_project , etcs
试试这个
class User < ActiveRecord::Base
has_and_belongs_to_many :projects
has_many :created_projects, :class_name => "Project", :foreign_key => "creator_id"
end
class Project< ActiveRecord::Base
has_and_belongs_to_many :users
belongs_to :creator, :class_name => "User"
end
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