Rails 6 将参数更改为哈希值

Question

我有一个应用程序，用户必须在其中填写调查问卷。我需要将用户的答案存储在 TestResult 模型中，该模型只有一个字段 answers:string

通过当前的实现，我从表单中获取参数：

params => {
  {
    "question_#{id}": "some answer 1",
    "question_#{id}": "some answer 12345",
  }
}

我想改成下面的结构：

# expected hash params
params => {
  {
    question: 'first question',
    answer: 'some answer 1'
  },
  {
    question: 'second question',
    answer: 'some answer 123431'
  }
}

我应该改变什么（可能在视图中）来获得这个哈希？

new.html.erb

<%= simple_form_for :test_results, url: test_results_path  do |f| %>
  <% @randomize_questions.map do |q| %>
    <%= q[:question] %>
    <%= f.input "question_#{q[:id]}", collection: q[:answers], as: :radio_buttons %>
  <% end %>
  <%= f.button :submit %>
<% end %>

控制器：

class TestResultsController < ApplicationController
  before_action :fetch_random_questions, only: [:new, :create]

  def new
    @test_result = TestResult.new
  end

  def create
    @test_result = TestResult.new(
      answer: test_result_params,
    )

    @test_result.save
    redirect_to dummy_path
    end
  end

  private

  def test_result_params
    params.require(:test_results).permit!
  end

  def fetch_random_questions
    TestQuestion.where(published: true).order('RANDOM()')

    @randomize_questions = test_questions.map do |obj|
      {
        id: obj.id,
        question: obj.question,
        answers: [obj.correct_answer, obj.other_answer1, obj.other_answer2, obj.other_answer3],
      }
    end
  end
end

测试结果模型

类TestResult

Answer 1

参数从输入名称中获取他的结构。

因此您可以为问题添加一个隐藏字段，然后为您的两个字段指定一个名称。

<%= simple_form_for :test_results, url: test_results_path  do |f| %>
  <% @randomize_questions.map do |q| %>
    <%= q[:question] %>
    <%= f.input "question_#{q[:id]}", as: :hidden, input_html: { name: "test_results[#{q[:id]}][question]", value: q[:question] }  %>
    <%= f.input "question_#{q[:id]}", collection: q[:answers], as: :radio_buttons, input_html: { name: "test_results[#{q[:id]}][answer]" } %>
  <% end %>
  <%= f.button :submit %>
<% end %>

参数应该如下所示：

params => {
  test_result: {
    1 => {
      question: "...",
      answer: "..."
    },
    2 => {
      question: "...",
      answer: "..."
    }
  }
}

未测试。您能告诉我这是否适合您吗？