在 rails 中使用 check_box 接受输入

Question

我是初学者，正在学习 rails 教程。作业包括向页面添加问题（可以编辑和 updated/deleted）。我试图让我的问题表单接受来自 check_box 的关于问题是否得到回答的输入（包括在更新部分）。

我已阅读有关 check_box here and and here 的文档，发现我需要 check_box(object_name, method, options = {}, checked_value = "1", unchecked_value = "0")。但是，我不确定我将在我的表单中的什么地方使用它，以及我将作为 object_name、方法和选项传递的内容。任何指点将不胜感激！

控制器：

class QuestionsController < ApplicationController
  def index
    @questions = Question.all
  end

  def new
    @question = Question.new
  end

  def create
    @question = Question.new(params.require(:question).permit(:title, :body))
    if @question.save
      flash[:notice] = "Question was saved."
      redirect_to @question
    else
      flash[:error] = "There was an error saving the post. Please try again."
      render :new
    end 
  end

  def show
    @question = Question.find(params[:id]) 
  end

  def edit
    @question = Question.find(params[:id])
  end

  def update
    @question = Question.find(params[:id])
    if @question.update_attributes(params.require(:question).permit(:title, :body))
      flash[:notice] = "Question was updated"
      redirect_to @question
    else
      flash[:error] = "There was an error saving your post. Please try again."
      render :edit
    end
  end

  def destroy
    @question = Question.find(params[:id])
    @question.destroy
    redirect_to questions_path
    flash[:notice] = "The question has been deleted."
  end
end

显示视图：

<h1><%= @question.title %></h1>

<%= link_to "Edit", edit_question_path(@question), class: 'btn btn-success' %>

<%= link_to "Delete", @question, method: :delete, data: { confirm: "Are you sure?" }, class: 'btn btn-success' %>

<p><%= @question.body %></p>

编辑视图：

<h1>Edit and Update Question</h1>

<div class="row">
  <div class="col-md-4">
    <p>Guidelines for questions</p>
    <ul>
      <li>Stay on topic.</li>
    </ul>
  </div>
  <div class="col-md-8">
    <%= form_for @question do |f| %>
      <div class="form-group">
        <%= f.label :title %>
        <%= f.text_field :title, class: 'form-control', placeholder: "Enter post title" %>
      </div>
      <div class="form-group">
        <%= f.label :body %>
        <%= f.text_area :body, rows: 8, class: 'form-control', placeholder: "Enter post body" %>
      </div>
      <div class="form-group">
        <%= f.submit "Save", class: 'btn btn-success' %>
        <%= link_to "Delete", @question, method: :delete, data: { confirm: "Are you sure?" }, class: 'btn btn-success' %>
      </div>
    <% end %>
  </div>

</div>

Answer 1

例如，如果您的 Question 模型中有一个布尔值 answered 属性，那么您在 form_for 块中所要做的就是说 <%= f.check_box :answered %>。如果选中，它将评估为真值，否则为假。

在 rails 中使用 check_box 接受输入

accepting input using check_box in rails

checkbox

ruby-on-rails