为 HABTM 协会创建表格

发布于 2024-11-17 12:21:49 字数 1309 浏览 5 评论 0原文

这就是我想要实现的目标。我有学生注册的课程。我想跟踪那个班的先进学生。我建立了另一个模型，称为 course_results。

class CourseAdvanceType < ActiveRecord::Base
  belongs_to :course
  has_and_belongs_to_many :students
end

####### 
class Students < ActiveRecord::Base
  has_many :courses
  has_and_belongs_to_many :course_advance_types
end

#######
class Courses < ActiveRecord::Base
  has_one :course_advance_type
  has_many :students
end

理想情况下，我想要一个小表格，允许选择高级类型（学术、运动），这样我就可以在其下面添加学生。每个学生都将记录在为 HABTM 关联创建的 course_advance_types_students 表中。

像这样的事情：

<form>
  <select>
    <option>academic</option>
    <option>athletic</option>
  </select>
  <div id="students">
     <div>Student ID: <input type="text" /></div>
     <div>Student ID: <input type="text" /></div>
     <!-- This link would dynamically add another name field -->
     <div><a href="[code]">Add Student</a></div>
  </div>
  <input type="submit>
</form>

完成此任务的最佳方法是什么？我考虑过使用accepts_nested_attributes_for，但我不知道这是否有效，因为我不想为学生设置属性，我希望学生ID与course_advance_types_students表中的course_advance_type_id一起保存，以便我可以提取报告具有高级学生的课程以及高级类型列表和学生列表。

如果我需要澄清某些事情或重新考虑我的方法，请告诉我。

谢谢。

原文

Here's what I'm trying to accomplish. I have courses that students register for. I want to track the advanced students in that class. I set up another model called course_results.

class CourseAdvanceType < ActiveRecord::Base
  belongs_to :course
  has_and_belongs_to_many :students
end

####### 
class Students < ActiveRecord::Base
  has_many :courses
  has_and_belongs_to_many :course_advance_types
end

#######
class Courses < ActiveRecord::Base
  has_one :course_advance_type
  has_many :students
end

Ideally I want a small form that allows a selection of advance type (academic, athletic) that will allow me to add students below it. Each student would be recorded in the course_advance_types_students table that is created for the HABTM association.

Something like this:

<form>
  <select>
    <option>academic</option>
    <option>athletic</option>
  </select>
  <div id="students">
     <div>Student ID: <input type="text" /></div>
     <div>Student ID: <input type="text" /></div>
     <!-- This link would dynamically add another name field -->
     <div><a href="[code]">Add Student</a></div>
  </div>
  <input type="submit>
</form>

What is the best way to accomplish this? I thought about using accepts_nested_attributes_for, but I don't know if that works because I don't want to set attributes for students, I want the student ID to be saved with the course_advance_type_id in the course_advance_types_students table so that I can pull a report of Courses that have advance students with the list of the advance type and the list of students.

If I need to clarify something or rethink my approach, please tell me.

Thank you.

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