rails 如何规划高考 app 的模型关系

Question

我想要一个基本的学生注册和登录设施。

登录后，学生应被引导至注册表，其中包含学生联系方式和学生分数的表格。

学生联系方式表包含

student contact form
    first name
    last name
    address
    mobile no
    gender
    fathers name
    fathers occupation
    mothers name.  

学生成绩单包含

**registration form**
    .
    |-- Board of examination
    |   `-- Branches(ex:science,:humanities)
    |       `--science[when i choose science]
               `--science subject1
               `--science subject2
               `--common paper for sciecnce and humanities
    |       `--humanities[when is choose humanities]
               `--humanities subject1
               `--humanities subject2
               `--common paper for sciecnce and humanities

Answer 1

想想数据之间的关系。您从 Examination Board 开始的树提供了一些线索。一位用户将拥有多个主题和多个标记。用户、主题和标记如何关联？一种可能

class User
  has_many :subject_marks
  has_many :subjects, through: subject_marks
end

class Subject
  belongs_to :branch
  has_many :subject_marks
  has_many :users, through: subject_marks
end

class SubjectMark
  belongs_to :user
  belongs_to :subject
end

class Branch
  has_many :subjects
  belongs_to :examination_board
end

class ExaminationBoard
  has_many :branches
end