如何通过ajax刷新div

时间:2012-05-11 08:12:32

标签: ruby-on-rails ajax

目前我正在使用rails 3.0.3开发一个网站。

我有一个名为 events 的模型。 在我的 events_controller.rb 文件中,我有这样的代码:

def destroy
  @event = Event.find(params[:id])
  @event.destroy
  #redirect_to events_url
  respond_to do |format|
    format.html { redirect_to (events_url), :notice => 'Event deleted' }
    format.js
  end
end

我有一个 index.html.haml 文件,我写了这个:

- content_for :title do
  Listing Events

%div#event
  = render :partial => "task"

我有一个名为 _task.html.haml 部分文件 我已经指定了div id和ajax remote true:像这样 -

- @events.each do |event|
  %ol.hoverbox
    %li.all{:id =>"event_#{event.id}"}
      = link_to image_tag(event.photo.url), event_path(event)
      .abc
        = event.name
        %br/
      .bca
        = event.start_date
        = event.start_time
        = link_to 'Delete', event, :confirm => 'Are you sure?',
                                   :method => :delete,
                                   :remote => :true

最后我有 destroy.js.haml 我写的地方 -

$('##{dom_id(@event)}').remove();

使用ajax成功删除但计数器显示的值相同,手动刷新页面后计数器正在减少。 请告诉如何通过ajax更新。

在我的模型中 event.rb 文件我正在计算维护计数器这样的事件:

   def current_date
        Date.today
    end

    def self.find_current
        Event.find :all, :conditions => ['(start_date  = current_date)'], :order => 'start_date '
    end

    def self.count_past(current_date = Date.today)
       Event.count :all, :conditions => ['start_date < ?', current_date], :order => 'start_date'
    end

    def self.count_upcoming(current_date = Date.today)
       Event.count :all, :conditions => ['start_date > ?', current_date], :order => 'start_date'
   end

    def self.count_today(current_date = Date.today)
        Event.count :all, :conditions => ['start_date = ?', current_date], :order => 'start_date'
    end

我还有一个部分是布局名为 subnav.html.haml ,我正在网页上显示计数

      %li
        - if params[:controller] == "brands"
          // my code
        - elsif params[:controller] == "events"
          %a.blue.tt-top-center{:title => "Today's Events", :href => events_path(:view => "today") }#{Event.count_today}
          %span Today's Events

  %li
    - if params[:controller] == "brands"
 //my code
    - elsif params[:controller] == "events"
      /= link_to "Upcomming events", events_path(:view => "upcoming") 
      %a.tt-top-center{:title => "upcomming Events", :href => events_path(:view => "upcoming") }#{Event.count_upcoming}
      %span Upcoming Events

我通过很多链接搜索但没有得到更新我的计数的方法,请帮助我并让我理解,因为在网站上他们给出了与我的标准不符的提示,所以请帮助我并使用我在代码中使用的类和url的名称相同,我真的很感谢你的帮助。

1 个答案:

答案 0 :(得分:0)

$('##{dom_id(@event)}').reset();放入destroy.js.erb文件。