ruby-on-rails - Rails 4 考勤系统

Question

您好，我实际上正在努力构建一个在 Rails 4 上实现出勤模型的 Rails 4 应用程序，我在 stackoverflow 上发现了两个问题，但它们是在 2012 年发布的，当我尝试关注它们时它失败了。

这是我得到的最接近的on stackoverflow

编辑:我已经有了教室 View 并列出了学生。并且可以将学生分配到教室，但问题是让学生进入新的attsheet并将他们保存到attendance

这是我现在拥有的

# Attendance
# take student as a single entry for :attsheet and
# has a :attended (boolean) and remarks as well
class Attendance < ActiveRecord::Base
  belongs_to :student
  belongs_to :attsheet
end    

#Attsheet which means attendance sheet
#has :post_date and :remark 
class Attsheet < ActiveRecord::Base
  belongs_to :classroom
  has_many :attendances
  accepts_nested_attributes_for :attendances 
end

class Student < ActiveRecord::Base
  belongs_to :school
  has_and_belongs_to_many :classrooms
  has_many :attendances
end

class Classroom < ActiveRecord::Base
  belongs_to :school
  has_and_belongs_to_many :students
  has_many :attsheets

  validates :class_name, presence: true
end

我希望教室能够为每个学生创建新的出勤记录或查看出勤文件。

我现在可以在类里面完成此操作，但我不知道接下来要为 Controller 和 View 做什么

 $ = link_to "New Attendance", new_school_classroom_attsheet_path(@school, @classroom, @attsheet) 

Answer 1

在 attandances_controller 中，

class AttendancesController < ApplicationController

    before_filter :set_parents

    def new
        @attendance= @classroom.attendances.new
    end

    def create
        @attendance= @classroom.attendances.new(params[:milestone]) 

        if @attendance.save
            redirect_to ....
        else
            render :action=>:new
        end 
    end

   def set_parents
        @school= School.find(params[:school_id])
        @classroom= @school.classrooms.find(params[:classroom_id])  
   end
end

并在 attendacen 的 _form.html.erb 中，

<%= form_for(@school, @classroom, @attendance]) do |f|%>
<% if @attendance.errors.present? %>
<ul class="warning">
    <% @attendance.errors.full_messages.each do |message| %>
    <li><%= message%></li>
    <% end %>
</ul>
<% end %>

<h2>Attendance</h2>
.........
<%= f.submit button %>
<% end %>

这将提交 fotm 以创建出勤 Action