将 JQuery 日期选择器数据传递到 Rails 控制器

我是 Rails 和 JQuery 的新手，所以我会尽力解释这一点。我正在尝试将 JQuery 日期选择器值传递给我的 Rails 控制器。该页面上有数据，我希望用户能够根据日期范围进行过滤。关于这个主题有许多不同的帖子：

将变量从 jquery 传递到 Rails 控制器 https://stackoverflow.com/questions/11211433/passing-the-variables-from-from-jquery-to-rails-controller

如何将变量从 AJAX 表单传递到控制器？ https://stackoverflow.com/questions/11842978/how-to-pass-variables-from-ajax-form-into-controller

我已尝试遵循这些帖子的指导，但仍然遇到问题。

这是我的部分_日期过滤器.html.erb =>

    <%= form_tag({:controller => 'events', :action => 'dateFilter', :class => 'date_form'}, :remote => true) do %>
    <%= datepicker_input "event", :start_date, :class => 'dateFilter', :dateFormat => 'mm/dd/y' %>
    <%= datepicker_input "event", :end_date, :class => 'dateFilter', :dateFormat => 'mm/dd/y' %>
    <%= submit_tag "Submit" %>
    <% end %> 

这是生成的HTML =>

    <form accept-charset="UTF-8" action="/events/dateFilter?class=date_form" data-remote="true" method="post">
    <input class="dateFilter" id="event_start_date" name="event[start_date]" size="30" type="text" /><script type="text/javascript">

   //<![CDATA[
   jQuery(document).ready(function(){jQuery('#event_start_date').datepicker({"dateFormat":"mm/dd/y"})});
   //]]>
   </script>

   <input class="dateFilter" id="event_end_date" name="event[end_date]" size="30" type="text" /><script type="text/javascript">

   //<![CDATA[
   jQuery(document).ready(function(){jQuery('#event_end_date').datepicker({"dateFormat":"mm/dd/y"})});
   //]]>
   </script>

   <input name="commit" type="submit" value="Submit" />
   </form>  

这里是日期过滤器.js.erb =>

$('.dateFilter').append('<%= escape_javascript(render(@events)) %>');

这里是事件控制器 =>

 def dateFilter
   @events = Event.find(:all, :conditions => ["EVENT_DATE_TIME_LOCAL BETWEEN ? AND ?", params[:start_date], params[:end_date]])

  respond_to do |format|
      format.html
      format.json { render json: @events }
      format.js
  end
end

最后是应用程序.js =>

$(document).ready(function() {

  $('#date_form').submit(function (){  

    $.ajax({
     type: 'POST',
     url: "/events/dateFilter", 
     beforeSend: function (xhr) {xhr.setRequestHeader("Accept", "text/javascript");},
     data: { 'start_date' : $("input[name='event[start_date]']").datepicker(), 'end_date' : $("input[name='event[end_date]']").datepicker()}
     success: function(data) { <%= render "events/dateFilter" %>}
    });

 });

This is log data从服务器=>

Started POST "/events/dateFilter?class=date_form" for 127.0.0.1 at 2012-12-12 15:09:39 -0500
Processing by EventsController#dateFilter as JS
  Parameters: {"utf8"=>"✓", "authenticity_token"=>"J/HU+DxNmIwEhu3keN071k6MGCCD/n/1UhXUD0MkH1Q=", "event"=>{"start_date"=>"12/06/12", "end_date"=>"12/13/12"}, "commit"=>"Submit", "class"=>"date_form"}
  Event Load (1.7ms)  SELECT "TBLEVENT".* FROM "TBLEVENT" WHERE (EVENT_DATE_TIME_LOCAL BETWEEN NULL AND NULL)
  Rendered collection (0.0ms)
  Rendered events/dateFilter.js.erb (0.3ms)
Completed 200 OK in 8ms (Views: 3.4ms | ActiveRecord: 1.7ms)

问题之一是我尝试传递的数据值始终为“NULL”。我什至不确定我是否正确地处理了这个问题，对此的任何帮助/反馈将不胜感激。谢谢。

从您的日志数据来看，这是在Parameters:

"event"=>{"start_date"=>"12/06/12", "end_date"=>"12/13/12"}

意思是start_date and end_date位于一个名为的哈希中event，所以你的控制器应该如下所示：

def dateFilter
    eventIn = params[:event]
    @events = Event.find(:all, :conditions => ["EVENT_DATE_TIME_LOCAL BETWEEN ? AND ?", eventIn[:start_date], eventIn[:end_date]])

    respond_to do |format|
       format.html
       format.json { render json: @events }
       format.js
    end
end

还有一件小事——form_tag class应该这样设置：

<%= form_tag({:controller => 'events', :action => 'dateFilter'}, :class => 'date_form', :remote => true) do %>