ActiveRecord Association Through that has many foreign_key in Joins table -

below example

teacher has_many students student has_many teachers student has_many books book has_many colors

class teacher < applicationrecord     has_many :meetings     has_many :books, through: :meetings end  class student < applicationrecord     has_many :meetings     has_many :teachers, through: :meetings end  class book < applicationrecord     has_many :meetings     has_many :colors, through: :meetings end  class meeting < applicationrecord     belongs_to :teacher     belongs_to :student     belongs_to :book     belongs_to :color end 

i have problem result shows on index page not right.

for example:

@teacher.name @teacher.students.each |s|     s.name     s.books.each |b|         book.name         b.colors.each |c|            c.name         end     end end 

please help!

thanks,

helen ta.