rubyonrails-同一个表之间的多对多

您应该能够设置分配模型,并像使用任何其他多对多关系一样使用它:

class User < ActiveRecord::Base
  has_many :student_teacher_assignments, :class_name => "StudentTeacherAssignment", :foreign_key => "student_id"
  has_many :teachers, :through => :student_teacher_assignments
  has_many :teacher_student_assignments, :class_name => "StudentTeacherAssignment", :foreign_key => "teacher_id"
  has_many :students, :through => :teacher_student_assignments
end

class StudentTeacherAssignment < ActiveRecord::Base
  belongs_to :student, :class_name => "User"
  belongs_to :teacher, :class_name => "User"
end