扶手：切换布尔州与的link_to [英] Rails: Toggle a Boolean State with a link_to

问题描述

添加一个管理员，以我的Rails应用（这一点： http://www.interque.co/ ）。增加了一个布尔状态批准的每一个问题。我想通过点击我标记的批准链接切换的状态。

Added an admin view to my rails app (this: http://www.interque.co/). Added a boolean state for approved to each question. I'm trying to toggle that state by clicking a link I've labeled approved.

下面是我的控制器：

class AdminController < ApplicationController
  def index
    @questions = Question.all
    unless current_user && current_user.administrator?
        redirect_to root_path
    end
  end
end

下面是管理员认为我的工作，其中列出了所有未经批准的问题：

Here's the admin view I'm working with, which lists all unapproved questions:

<% if current_user %>
  <% @questions.each do |question| %>
    <% if question.approved == false %>
    <div>
        Title: <%= question.title %><br>
        Description: <%= question.description %><br>
        <%= link_to "Approve", question_path(question), :method => :put %>
    </div>
    <br>
    <% end %>
  <% end %>
<% end %>

我可以通过单击的link_to切换状态？我只需要设置question.approved =真。

Can I toggle the state by clicking a link_to? I just need to set question.approved = true.

任何帮助将是AP preciated。先谢谢了。

Any help would be appreciated. Thanks in advance.

推荐答案

远程地址：忠实于你的链接，并添加一个控制器动作，设置布尔状态。你可能要检查该链接改为批准后（包括在答辩）。另一个好处将是错误的情况下显示错误消息，并请求期间禁用链接。

Add remote: true to your link and add a controller action that sets boolean state. You'll probably want to check that link is changed to 'approved' after that (included in the answer). Another good thing will be displaying an error message in case of error and disabling link during request.

配置/ routes.rb中

config/routes.rb

resources :questions do
  member do
    put :approve
  end
end

意见/管理/ index.html.erb

views/admin/index.html.erb

<span class="approve-question">
  <%= link_to "Approve", approve_question_path(question), :method => :put, remote: true %>
</span>

意见/问题/ approve.js.erb

views/questions/approve.js.erb

$('.approve-question').html('Approved');

控制器/ questions_controller.rb

controllers/questions_controller.rb

respond_to :js

def approve
  @question = Question.find(params[:id])
  if @question.update(approved: true)
    render
  else
    render @question
  end
end

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