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我目前有3个模型(用户,配对,会议)和连接表meetings_pairings。将关联添加到HaBtM关系的关联表
User.rb
class User < ActiveRecord::Base
enum role: [:student, :supervisor, :admin]
has_many :students, class_name: "User",
foreign_key: "supervisor_id"
belongs_to :supervisor, class_name: "User"
has_and_belongs_to_many :pairings
end
Pairings.rb
class Pairing < ActiveRecord::Base
has_and_belongs_to_many :supervisor, class_name: 'User'
belongs_to :student, class_name: 'User'
has_and_belongs_to_many :meetings, join_table: :meetings_pairings
end
Meetings.rb
class Meeting < ActiveRecord::Base
enum status: [:available, :unavailable]
has_and_belongs_to_many :pairings, join_table: :meetings_pairings
end
Schema.rb(相关比特)
create_table "meetings", force: :cascade do |t|
t.date "meeting_date"
t.datetime "meeting_time"
t.integer "status", default: 0, null: false
t.boolean "accepted"
end
create_table "meetings_pairings", id: false, force: :cascade do |t|
t.integer "pairing_id"
t.integer "meeting_id"
end
add_index "meetings_pairings", ["meeting_id"], name: "index_meetings_pairings_on_meeting_id"
add_index "meetings_pairings", ["pairing_id"], name: "index_meetings_pairings_on_pairing_id"
create_table "pairings", force: :cascade do |t|
t.integer "supervisor_id"
t.integer "student_id"
t.string "project_title"
end
add_index "pairings", ["student_id"], name: "index_pairings_on_student_id", unique: true
add_index "pairings", ["supervisor_id"], name: "index_pairings_on_supervisor_id"
我创建了视图和控制器,以使用户(配对中的主管)能够创建一个会议。但是我不知道如何将这个关联添加到连接表中。
meetings_controller.rb
class MeetingsController < ApplicationController
def index
@meetings = Meeting.all
end
def new
@meeting = Meeting.new
end
def create
@meeting = Meeting.new(meeting_params)
if @meeting.save
redirect_to meetings_path, :notice => "Meeting Created!"
else
redirect_to meetings_path, :notice => "Meeting Failed!"
end
end
def show
@meeting = Meeting.find(params[:id])
end
private
def meeting_params
params.require(:meeting).permit(:meeting_date, :meeting_time)
end
end
从视图形式
<%= form_for @meeting do |f| %>
<div class="field">
<%= f.label :meeting_date %><br />
<%= f.text_field :meeting_date %>
</div>
<div class="field">
<%= f.label :meeting_time %><br />
<%= f.time_select :meeting_time, :ampm => true, :minute_step => 30, :default => {:hour => '9', :minute => '0'} %>
</div>
<div class="actions">
<%= f.submit %>
</div>
<% end %>
这会在会议上表中的条目,所以我的问题是如何让这个条目被制作成连接表与创建会议的当前用户的配对ID?
你们的配对是否始终是一位主管和一位学生?是否总是创建会议的主管?或者学生也可以创建会议? –
你的问题是如何创建一个连接记录?您需要添加的代码位于何处(模型,视图或控制器?) –
@ScottSchupbach学生只能与1位主管配对,主管可以有许多学生。只有主管可以创建与他们配对的学生可以看到并请求的会议 – Yoklan