Question

我创建了一个复选框列，用户可以在其中选择要在表上删除的多个项目。像这样，但只有一个按钮“批量删除”：

这是我的代码：

<%= render "shared/nav_dashboard" %>
<%= render "shared/header_dashboard" %>

  <section>
        <div class="container-fluid">
          <!-- Page Header-->
          <header> 
            <h1 class="h3 display">Pages</h1>
          </header>
          <div class="row">
            <div class="col-lg-12">
              <div class="card">
                <div class="card-header">
                  <h4>List of Pages</h4>
                </div>
                <div class="card-body">
                  <div class="table-responsive">
                    <table class="table">
                      <thead>
                        <tr>
                         <th><%= link_to "Bulk Delete", page_path(page), method: :delete, data: {  confirm: "Are you sure?" }%></th>
                          <th>Id</th>
                          <th>Title</th>
                          <th>Summary</th>
                          <th>Date Created</th>
                          <th colspan="3">Action</th>
                        </tr>
                      </thead>
                      <tbody>
                      <% @pages.each do |page| %>
                        <tr>
                          <td><input type="checkbox" value="false"> </td>
                          <td scope="row"><%= page.id %></td>
                          <td><%= page.title %></td>
                          <td><%= page.body.truncate(60) %></td>
                          <td> <%= page.created_at.strftime("%B %d, %Y") %> </td>
                        <td><%= link_to "Show", page_path(page)%></td>
                         <td><%= link_to "Edit", edit_page_path(page)%></td>
                          <td><%= link_to "Delete", page_path(page), method: :delete, data: {  confirm: "Are you sure?" }%></td>
                        </tr>
                        <% end %>
                      </tbody>
                    </table>
                  </div>
                </div>
              </div>
            </div>


      </section>


<%= render "shared/footer_dashboard" %>

我想知道为什么它不起作用？

如何逐步执行此功能？

Answer 1

您可以使用表格。看起来像这样（我使用的是simpleform，但这将适用于您喜欢的每个表单标签助手）：

在routes.rb中：

resources :pages do 
  collection do 
    delete :bulk_destroy
  end
end

您认为：

<%= simple_form_for :pages, url: "/pages/bulk_destroy", method: :delete do |f| %> 
  <ul>
    <% @pages.each do |page| %>
      <li> <%= page.name %> <input type="checkbox" name="collection_ids[]" value="<%= page.id %>" /> </li>
    <% end %>
  </ul>
  <%= f.submit %>
<% end %>

在您的控制器中：

class PagesController < ApplicationController
  def bulk_destroy
    Page.where(id: params[:collection_ids]).destroy_all
  end
end

繁重的工作为您服务：https://github.com/joshmn/active_action或在https://github.com/joshmn/bulk_actions_poc上查看最基本的概念证明

Answer 2

如果您不想编写其他单独的方法，则可以尝试以下操作，只需确保选择了多个ID时，它应作为params [：ids]发送，而不是params [：id] < / p>

 public NotificationCompat.Builder buildLocalNotification(Context context, PendingIntent pendingIntent, AppointmentModel appointmentModel) {
    String channelId = "Appoinment Reminder";
    Log.e("@@ChannelId", channelId);
    Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
    NotificationCompat.Builder builder = new  NotificationCompat.Builder(context, channelId)
            .setSmallIcon(R.mipmap.ic_launcher)
            .setContentTitle("Appoinment Reminder")
            .setContentText("Your appointment with "+appointmentModel.getContact() +" at "+ appointmentModel.getDate1()+" "+appointmentModel.getTime())
            .setAutoCancel(true)
            .setSound(defaultSoundUri)
            .setContentIntent(pendingIntent);
    NotificationManager manager = (NotificationManager) context.getSystemService(NOTIFICATION_SERVICE);
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
        @SuppressLint("WrongConstant") NotificationChannel channel = new NotificationChannel(channelId, "Appoinment Reminder", NotificationManager.IMPORTANCE_DEFAULT);
        manager.createNotificationChannel(channel);
    }
    manager.notify(NotificationID.getID(), builder.build());
    return builder;
}

 intentToRepeat.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
            PendingIntent pendingIntent = PendingIntent.getActivities(context, NotificationID.getID(),  new Intent[] {backIntent, intentToRepeat}, PendingIntent.FLAG_UPDATE_CURRENT);
            buildLocalNotification(context, pendingIntent, appointmentModelList.get(i)).build();

Answer 3

您可能需要根据您的jquery版本更改语法

$('#bulk_delete').on('click', function(e){
  var selectedIds = [];
  $("input[type='checkbox']:checked").each(function(e){
    ids.push($(this).data('id'))
  })
  $.ajax({url: 'your action url',type: 'DELETE', data: {ids: selectedIds}})
})

如何在Rails 6中选择要删除的多个项目（通过复选框）

3 个答案: