我有一个模型MultipleChoiceQuestion
,它具有五个属性:answer_one
,answer_two
,answer_three
,answer_four
和answer_five
,以及一个名为answer_correct
我想跟踪每个用户加载每个问题后选择 onClick 的情况。可能使用远程:是的-我一直在互联网上阅读,似乎很容易创建一个名为UserAnswer
的嵌套多态模型,以跟踪用户对每个问题的答案选择。
但是,我感到困惑的是如何将原始模型的参数(MultipleChoiceQuestion)传递给视图中的新模型,因为我的理解是所有模型在数据库中都有不同的属性。 (当信息字符串来自父模型时,我如何确保我可以保留用户通过第二模型单击时选择的内容?)
是否可以将父模型的属性传递给嵌套模型?这样做的目的是让用户随着时间的流逝了解自己的正确或错误。
MultipleChoiceQuestion.rb模型
# == Schema Information
#
# Table name: multiple_choice_questions
#
# id :bigint(8) not null, primary key
# question :text
# answer_one :text
# answer_two :text
# answer_three :text
# answer_four :text
# answer_correct :text
# answer_explanation :text
# published :boolean
# flagged :boolean
# user_id :bigint(8)
# created_at :datetime not null
# updated_at :datetime not null
# slug :string not null
# source :string
# reviewed :boolean
# who_reviewed :string
# reviewed_at :datetime
# difficulty_rating :integer
# multiple_choice_question_classification_id :integer
# controversial :boolean default(FALSE)
# origination :integer default("not_given")
Class MultipleChoiceQuestion < ApplicationRecord
belongs_to :user, optional: true
validates :user, presence: true
belongs_to :multiple_choice_question_classification, optional: true
has_many :flags, dependent: :destroy
acts_as_taggable
# activity feed
include PublicActivity::Model
tracked owner: Proc.new { |controller, model| controller.current_user ? controller.current_user : nil }
validates :question, :slug, presence: true, length: { minimum: 5 }
validates_uniqueness_of :question
User.rb模型
# == Schema Information
#
# Table name: users
#
# id :bigint(8) not null, primary key
# email :string default(""), not null
# encrypted_password :string default(""), not null
# reset_password_token :string
# reset_password_sent_at :datetime
# remember_created_at :datetime
# sign_in_count :integer default(0), not null
# current_sign_in_at :datetime
# last_sign_in_at :datetime
# current_sign_in_ip :string
# last_sign_in_ip :string
# created_at :datetime not null
# updated_at :datetime not null
# first_name :string
# last_name :string
# school_name :string
# graduation_year :string
# current_sign_in_token :string
# admin :boolean default(FALSE)
# superadmin :boolean default(FALSE)
# verified :boolean default(FALSE)
# premiumuser :boolean default(FALSE)
# regularuser :boolean default(FALSE)
# banneduser :boolean default(FALSE)
# user_role :boolean default(TRUE)
# username :string default(""), not null
class User < ApplicationRecord
has_many :posts, dependent: :destroy
has_many :multiple_choice_questions, dependent: :destroy
has_many :comments, dependent: :destroy
has_many :flags
has_many :saved_items
has_one_attached :avatar
查看-multiple_choice_questions / show.html.erb
<h5>
<%= @multiple_choice_question.question %>
</h5>
<p>
<span>Answer choice #1:</span>
<%= @multiple_choice_question.answer_one %>
</p>
<p>
<span>Answer choice #2:</span>
<%= @multiple_choice_question.answer_two %>
</p>
<p>
<span>Answer choice #3:</span>
<%= @multiple_choice_question.answer_three %>
</p>
<p>
<span>Answer choice #4:</span>
<%= @multiple_choice_question.answer_four %>
</p>
<p class="correct">
<span>Correct Answer:</span>
<%= @multiple_choice_question.answer_correct %>
</p>
答案 0 :(得分:1)
这就是我要做的:
首先,您需要对考试或测试有某种参考。 其次,您的考试需要有x个问题。 第三,您的问题需要有x个可能的答案以及一个正确的答案。然后,采用您的用户模型,并将该用户与这样的测试和答案相关联。
请注意,这不是有效的语法,仅用于说明目的。
class Exam has_many :questions
has_and_belongs_to_many :users
class Question has_many :answers
has_many :user_answers
belongs_to :exam
class Answer belongs_to :question
class UserAnswer belongs_to :question
belongs_to :user
class User has_and_belongs_to_many :exams
has_many :user_answes
现在,您可以将任何考试与任何用户相关联,也可以将任何答案与任何用户相关联。
例如,如果您向Answers
控制器提交表单,则可以创建关联来跟踪每个用户先前选择的答案,就像这样:
answer = Answer.find(params[:id])
user_answer = UserAnswer.create(answer_id: answer.id, user_id: user.id, question_id: answer.question.id)
因此,现在您可以将自己的User
,Exam
和UserAnswer
模型进行相当大的连接,以提取用户针对特定考试给出的每个答案。如果您使用当前的模型结构,可以达到目标,但是它的可伸缩性将不那么理想,您可能必须四处寻找才能使其中的某些功能按您的意愿工作。
答案 1 :(得分:1)
如果您愿意保留当前的架构,则可能需要执行以下步骤来实现所需的功能
步骤 :(代码段会根据与OP的讨论进行更新)
1)定义一个自定义路线,您可以在 AJAX 中使用它来发送用户选择的答案并接收结果。
var base_string = '1,4,1,7,2';
base_string = base_string.split(',');
var new_string = [];
for(var i=0; i<base_string.length-1; i++){
if(base_string[i+1]>base_string[i]){
for(var j=parseInt(base_string[i]); j<parseInt(base_string[i+1]); j+=.5){
new_string.push((j))
}
}
else if(base_string[i+1]<base_string[i]){
for(var j=parseInt(base_string[i]); j>=parseInt(base_string[i+1]); j-=.5){
new_string.push((j))
}
}
}
console.log("new_string: "+new_string);
2)具有链接的答案,以便用户点击
#routes.rb
post '/verify_user_selected_answer', to: "multiple_choice_questions#verify_user_selected_answer'
3)用户单击答案时触发 AJAX 呼叫
<%= link_to @multiple_choice_question.answer_one, "javascript:void(0);", class: "answer" %>
4)使用$(document).ready(function() {
$("a.answer").on( "click", function( event ) {
var current_answer = $(this);
var question_id = '<%= @multiple_choice_question.id %>';
var current_user = "<%= current_user.id %>";
$.ajax({
url: "/verify_user_selected_answer",
type: "POST",
dataType: "json",
data: {user_id: current_user, question: question_id, answer: current_answer.text()},
success: function(response){
$("#display_result").text(response["result"]);
}
});
});
});
来显示结果。
div
5)最后,在<div id="display_result">
中执行验证并发送回结果
multiple_choice_questions#verify_user_selected_answer