未捕获的类型错误：无法读取未定义的属性“应用”-日期选择器

Question

我的应用程序的同一方面有两个问题，抽象视图是这样的：

该应用程序允许用户查看不同的视频剪辑。在后端/管理部分，管理员可以跟踪任何特定剪辑组的视图。例如，管理员可以选择Universal Studios，选择 adate range: Beginning Date: 2015-01-1, End Date: 2016-01-1并点击filter，然后查看Universal在此范围内收到的总观看次数。

问题是，一方面，日期选择器不再工作，所以当我点击日期字段时，没有日历出现，我必须手动输入日期。对于两个，我只得到最远的结果：2015-10-18和2016-02-18。当我输入2015-09-18或之前输入任何内容时，它不会生成结果。

以下是我在 Chorme 中单击检查元素时的错误，

错误：未捕获的类型错误：无法读取未定义的属性“应用”

 */
 (function($) {
   var _datepicker = jQuery.fn.datepicker;

   $.fn.datepicker = function(options) {
    var $date = _datepicker.apply(this, arguments); <--- this line

application.js 需要

// This is a manifest file that'll be compiled into including all the files listed below.
// Add new JavaScript/Coffee code in separate files in this directory and they'll automatically
// be included in the compiled file accessible from http://example.com/assets/application.js
// It's not advisable to add code directly here, but if you do, it'll appear at the bottom of the
// the compiled file.
//
//= require jquery
//= require jquery_ujs
//= require jquery-ui/draggable
//= require jquery-ui/sortable
//= require jquery-ui/autocomplete
//= require bootstrap
//= require carousel.js
//= require hover.js
//= require menu_js/modernizr.js
//= require menu_js/dlmenu.js
//= require custom.js
//= require bootstrap-tabs.js
//= require jquery.raty.js
//= require letsrate.js
//= require rails-timeago
//= require tinymce-jquery
//= require scrollTo.js
//= require clips.js
//= require jquery.sticky.js
//= require jquery-ui.min.js
//= require jquery.dynatable.js
//= require playlist.js
//= require index.js.coffee

根据 Robs 点更新：

自定义.js

/**
 * Constructor patch for jQuery UI DatePicker
 * Automatically initializes the input with the value from the altField
 */
 (function($) {
   var _datepicker = jQuery.fn.datepicker;

   $.fn.datepicker = function(options) {
    var $date = _datepicker.apply(this, arguments);

    if (options.altFormat && options.altField) {
      var altValue = $(options.altField).val();
      var value = $.datepicker.parseDate(options.altFormat, altValue);
      var dateFormat = _datepicker.call(this, 'option', 'dateFormat');
      $(this).val($.datepicker.formatDate(dateFormat, value));
    }
  };
})(jQuery);

var $date = $("#search_start_date");

$date.datepicker({
  dateFormat: "yy-mm-dd",
  altFormat: "yymmdd"
});

var $end_date = $('#search_end_date');

$end_date.datepicker({
  dateFormat: "yy-mm-dd",
  altFormat: "yymmdd"
});



});

index.html.erb

<%= form_for Search.new, url: statistics_search_saas_admin_statistics_path, html: {method: :get, remote: true} do |f| %>
<table id="table_1" class="table" style="margin-bottom: 5px;">
  <tr>
    <th style="color: black; background: white; border-color: white;">Studio</th>
    <th style="color: black; background: white; border-color: white;">Film</th>
    <th style="color: black; background: white; border-color: white;">Clip</th>
    <th style="color: black; background: white; border-color: white;"></th>
    <th style="color: black; background: white; border-color: white;"></th>
  </tr>
  <tr>
  <td>
    <select multiple id="studio_select" style="height: 150px;">
      <% Studio.all.each do |studio| -%>
      <option value="<%=studio.id %>"><%= studio.name %></option>
      <% end -%>
    </select>
    <%= hidden_field_tag :studio_ids %>
  </td>
  <td>
    <select multiple id="film_select" style="height: 150px;"></select>
    <%= hidden_field_tag :film_ids %>
  </td>
  <td>
    <select multiple id="clip_select" name="search[clip]" style="height: 150px;"></select>
    <%= hidden_field_tag :clip_ids %>
  </td>
</table>

<div class="span10">
<table class="table">
  <tr>
    <th>Beginning Date</th>
    <th>End Date</th>
    <th></th>
  </tr>
  <tr>
    <td><%= f.text_field :start_date, value: 1.month.ago.strftime('%Y-%m-%d')  %></td>
    <td><%= f.text_field :end_date, value: Time.now.strftime('%Y-%m-%d') %></td>
    <td>
      <%= f.submit "Filter", class: "btn btn-danger", data: {disable_with: 'Searching...'} %>
      <%= link_to 'Clear Form', '#', id: "clear", class: 'btn btn-default'  %>
    </td>
  </tr>
</table>
</div>
<% end -%>