我试图通过此链接https://jsfiddle.net/bindrid/2bkbx2y3/6/
在聚合物内部实现数据表过滤器但是当我申请聚合物时，在将数据推送到数据表的插件方法时发现了一些问题。在聚合物中，我使用vaadin-date-picker作为datepicker，这是我的代码：
HTML
<template>
<form class="form-inline m-b">
<div class="form-group form-group-sm">
<vaadin-date-picker id="min" placeholder="Start"></vaadin-date-picker>
<vaadin-date-picker id="max" placeholder="End"></vaadin-date-picker>
</div>
</form>
<table id="mainTable" class="table table-condensed table-striped table-bordered" style="width: 100%">
<thead>
<tr>
<th>STAD</th>
</tr>
</thead>
</table>
脚本：
class DataTableD extends Polymer.Element {
static get is() {
return 'data-table-d';
}
ready() {
super.ready();
var min = this.$.min;
var max = this.$.max;
//push method into search
$.fn.dataTable.ext.search.push(function (settings, data, dataIndex) {
alert("min . ." + min) //min . .[object HTMLElement]
var startDate = new Date(data[0].replace( /(\d{2})-(\d{2})-(\d{4})/, "$2/$1/$3"));
if (min == null && max == null) {alert("startDate . ." + startDate);}
if (min == null && startDate <= max) {alert("startDate . ." + startDate);}
if (max == null && startDate >= min) {alert("startDate . ." + startDate);}
if (startDate <= max && startDate >= min) {alert("startDate . ." + startDate);}
return false;
});
// Event listener to the two range filtering inputs to redraw on
min.addEventListener('value-changed', function() {
window.setTimeout(function() {
max.value = min.value;
max.open();
}, 500);
this.$.mainTable.draw();
});
}
_initializeDatatable() {
if ( ! this.$mainTable) {
// Make the jQuery object of the mainForm and arrivalTable.
this.$mainTable = $(this.$.mainTable);
}
this._dataTable = this.$mainTable.DataTable({
});
}
}
window.customElements.define(DataTableD.is, DataTableD);
希望有人可以分享这个想法，以使其付诸实践
==========================
答案 0 :(得分：1)
下面我尝试说明另一种过滤方法：
0.5.1HTMLImports.whenReady( ()=> {
class DataTableD extends Polymer.Element {
static get is() {
return 'data-table-d';
}
static get properties() {
return {
minDate:{type:String },
maxDate:{type:String }
}}
static get observers(){
return ['_checkMinMaxDate(minDate, maxDate)']
}
ready() {
super.ready();
}
_checkMinMaxDate(min,max) {
console.log("Min-max:", min,max, this.items, this.xitems);
var minn = min==="" ? "1000/01/01":min;
var maxx = max==="" ? "2050/01/01":max;
var newItems = this.items.filter( (el)=> {
return el.Startdate <= maxx &&
el.Startdate >= minn ;
});
this.set('xitems', newItems);
}
}
window.customElements.define(DataTableD.is, DataTableD)
})
编辑
如何在Polymer外部传递数据
<head>
<script
src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
<base href="https://cdn.rawgit.com/download/polymer-cdn/2.6.0.2/lib/">
<script src="webcomponentsjs/webcomponents-lite.js"></script>
<link rel="import" href="polymer/polymer.html">
<link rel="import" href="https://cdn-origin.vaadin.com/vaadin-core-elements/master/vaadin-date-picker/vaadin-date-picker.html">
<link rel="import" href="https://cdn-origin.vaadin.com/vaadin-core-elements/master/vaadin-grid/all-imports.html">
</head>
<body>
<data-table-d id="tableDat" items="{{items}}"></data-table-d>
<dom-module id="data-table-d">
<template>
<style>
vaadin-grid{
height: 100%;
font-size: 14px;
}
vaadin-grid:hover {
cursor: pointer;
}
</style>
<vaadin-date-picker id="min" placeholder="Start" value="{{minDate}}" on-change="_checkMinMaxDate"></vaadin-date-picker>
<vaadin-date-picker id="max" placeholder="End" value={{maxDate}} on-change="_checkMinMaxDate"></vaadin-date-picker><br><br><br><br>
<vaadin-grid aria-label="Companies" items="[[xitems]]" multi-sort>
<vaadin-grid-column>
<template class="header">
<vaadin-grid-filter path="Name"> </vaadin-grid-filter>
<vaadin-grid-sorter path="Name">Name</vaadin-grid-sorter>
</template>
<template>[[item.Name]]</template>
</vaadin-grid-column>
<vaadin-grid-column>
<template class="header">
<vaadin-grid-filter path="Position"> </vaadin-grid-filter>
<vaadin-grid-sorter path="Position">Position</vaadin-grid-sorter>
</template>
<template>[[item.Position]]</template>
</vaadin-grid-column>
<vaadin-grid-column>
<template class="header">
<vaadin-grid-filter path="Office"> </vaadin-grid-filter>
<vaadin-grid-sorter path="Office">Office</vaadin-grid-sorter>
</template>
<template>[[item.Office]]</template>
</vaadin-grid-column>
<vaadin-grid-column>
<template class="header">
<vaadin-grid-filter path="Age"> </vaadin-grid-filter>
<vaadin-grid-sorter path="Age">Age</vaadin-grid-sorter>
</template>
<template>[[item.Age]]</template>
</vaadin-grid-column>
<vaadin-grid-column>
<template class="header">
<vaadin-grid-filter path="Startdate"> </vaadin-grid-filter>
<vaadin-grid-sorter path="Startdate">Start date</vaadin-grid-sorter>
</template>
<template>[[item.Startdate]]</template>
</vaadin-grid-column>
<vaadin-grid-column>
<template class="header">
<vaadin-grid-filter path="Salary"> </vaadin-grid-filter>
<vaadin-grid-sorter path="Salary">Salary</vaadin-grid-sorter>
</template>
<template>[[item.Salary]]</template>
</vaadin-grid-column>
</vaadin-grid>
</template>
</dom-module>
<!-- BELOW TABLE JUST FOR DATA TO PASS IN POLYMER -->
<table style="display:none;" width="100%" class="display" id="example" cellspacing="0">
<thead>
<tr>
<th>Name</th>
<th>Position</th>
<th>Office</th>
<th>Age</th>
<th>Startdate</th>
<th>Salary</th>
</tr>
</thead>
<tfoot>
<tr>
<th>Name</th>
<th>Position</th>
<th>Office</th>
<th>Age</th>
<th>Start date</th>
<th>Salary</th>
</tr>
</tfoot>
<tbody>
<tr>
<td>Tiger Nixon</td>
<td>System Architect</td>
<td>Edinburgh</td>
<td>61</td>
<td>2011/04/25</td>
<td>$320,800</td>
</tr>
<tr>
<td>Garrett Winters</td>
<td>Accountant</td>
<td>Tokyo</td>
<td>63</td>
<td>2011/07/25</td>
<td>$170,750</td>
</tr>
<tr>
<td>Ashton Cox</td>
<td>Junior Technical Author</td>
<td>San Francisco</td>
<td>66</td>
<td>2009/01/12</td>
<td>$86,000</td>
</tr>
<tr>
<td>Cedric Kelly</td>
<td>Senior Javascript Developer</td>
<td>Edinburgh</td>
<td>22</td>
<td>2012/03/29</td>
<td>$433,060</td>
</tr>
<tr>
<td>Airi Satou</td>
<td>Accountant</td>
<td>Tokyo</td>
<td>33</td>
<td>2008/11/28</td>
<td>$162,700</td>
</tr>
<tr>
<td>Brielle Williamson</td>
<td>Integration Specialist</td>
<td>New York</td>
<td>61</td>
<td>2012/12/02</td>
<td>$372,000</td>
</tr>
<tr>
<td>Herrod Chandler</td>
<td>Sales Assistant</td>
<td>San Francisco</td>
<td>59</td>
<td>2012/08/06</td>
<td>$137,500</td>
</tr>
<tr>
<td>Rhona Davidson</td>
<td>Integration Specialist</td>
<td>Tokyo</td>
<td>55</td>
<td>2010/10/14</td>
<td>$327,900</td>
</tr>
<tr>
<td>Colleen Hurst</td>
<td>Javascript Developer</td>
<td>San Francisco</td>
<td>39</td>
<td>2009/09/15</td>
<td>$205,500</td>
</tr>
<tr>
<td>Sonya Frost</td>
<td>Software Engineer</td>
<td>Edinburgh</td>
<td>23</td>
<td>2008/12/13</td>
<td>$103,600</td>
</tr>
<tr>
<td>Jena Gaines</td>
<td>Office Manager</td>
<td>London</td>
<td>30</td>
<td>2008/12/19</td>
<td>$90,560</td>
</tr>
<tr>
<td>Quinn Flynn</td>
<td>Support Lead</td>
<td>Edinburgh</td>
<td>22</td>
<td>2013/03/03</td>
<td>$342,000</td>
</tr>
<tr>
<td>Charde Marshall</td>
<td>Regional Director</td>
<td>San Francisco</td>
<td>36</td>
<td>2008/10/16</td>
<td>$470,600</td>
</tr>
<tr>
<td>Haley Kennedy</td>
<td>Senior Marketing Designer</td>
<td>London</td>
<td>43</td>
<td>2012/12/18</td>
<td>$313,500</td>
</tr>
<tr>
<td>Tatyana Fitzpatrick</td>
<td>Regional Director</td>
<td>London</td>
<td>19</td>
<td>2010/03/17</td>
<td>$385,750</td>
</tr>
<tr>
<td>Michael Silva</td>
<td>Marketing Designer</td>
<td>London</td>
<td>66</td>
<td>2012/11/27</td>
<td>$198,500</td>
</tr>
<tr>
<td>Paul Byrd</td>
<td>Chief Financial Officer (CFO)</td>
<td>New York</td>
<td>64</td>
<td>2010/06/09</td>
<td>$725,000</td>
</tr>
<tr>
<td>Gloria Little</td>
<td>Systems Administrator</td>
<td>New York</td>
<td>59</td>
<td>2009/04/10</td>
<td>$237,500</td>
</tr>
<tr>
<td>Bradley Greer</td>
<td>Software Engineer</td>
<td>London</td>
<td>41</td>
<td>2012/10/13</td>
<td>$132,000</td>
</tr>
<tr>
<td>Dai Rios</td>
<td>Personnel Lead</td>
<td>Edinburgh</td>
<td>35</td>
<td>2012/09/26</td>
<td>$217,500</td>
</tr>
<tr>
<td>Jenette Caldwell</td>
<td>Development Lead</td>
<td>New York</td>
<td>30</td>
<td>2011/09/03</td>
<td>$345,000</td>
</tr>
<tr>
<td>Yuri Berry</td>
<td>Chief Marketing Officer (CMO)</td>
<td>New York</td>
<td>40</td>
<td>2009/06/25</td>
<td>$675,000</td>
</tr>
<tr>
<td>Caesar Vance</td>
<td>Pre-Sales Support</td>
<td>New York</td>
<td>21</td>
<td>2011/12/12</td>
<td>$106,450</td>
</tr>
<tr>
<td>Doris Wilder</td>
<td>Sales Assistant</td>
<td>Sidney</td>
<td>23</td>
<td>2010/09/20</td>
<td>$85,600</td>
</tr>
<tr>
<td>Angelica Ramos</td>
<td>Chief Executive Officer (CEO)</td>
<td>London</td>
<td>47</td>
<td>2009/10/09</td>
<td>$1,200,000</td>
</tr>
<tr>
<td>Gavin Joyce</td>
<td>Developer</td>
<td>Edinburgh</td>
<td>42</td>
<td>2010/12/22</td>
<td>$92,575</td>
</tr>
<tr>
<td>Jennifer Chang</td>
<td>Regional Director</td>
<td>Singapore</td>
<td>28</td>
<td>2010/11/14</td>
<td>$357,650</td>
</tr>
<tr>
<td>Brenden Wagner</td>
<td>Software Engineer</td>
<td>San Francisco</td>
<td>28</td>
<td>2011/06/07</td>
<td>$206,850</td>
</tr>
<tr>
<td>Fiona Green</td>
<td>Chief Operating Officer (COO)</td>
<td>San Francisco</td>
<td>48</td>
<td>2010/03/11</td>
<td>$850,000</td>
</tr>
<tr>
<td>Shou Itou</td>
<td>Regional Marketing</td>
<td>Tokyo</td>
<td>20</td>
<td>2011/08/14</td>
<td>$163,000</td>
</tr>
<tr>
<td>Michelle House</td>
<td>Integration Specialist</td>
<td>Sidney</td>
<td>37</td>
<td>2011/06/02</td>
<td>$95,400</td>
</tr>
<tr>
<td>Suki Burks</td>
<td>Developer</td>
<td>London</td>
<td>53</td>
<td>2009/10/22</td>
<td>$114,500</td>
</tr>
<tr>
<td>Prescott Bartlett</td>
<td>Technical Author</td>
<td>London</td>
<td>27</td>
<td>2011/05/07</td>
<td>$145,000</td>
</tr>
<tr>
<td>Gavin Cortez</td>
<td>Team Leader</td>
<td>San Francisco</td>
<td>22</td>
<td>2008/10/26</td>
<td>$235,500</td>
</tr>
<tr>
<td>Martena Mccray</td>
<td>Post-Sales support</td>
<td>Edinburgh</td>
<td>46</td>
<td>2011/03/09</td>
<td>$324,050</td>
</tr>
<tr>
<td>Unity Butler</td>
<td>Marketing Designer</td>
<td>San Francisco</td>
<td>47</td>
<td>2009/12/09</td>
<td>$85,675</td>
</tr>
<tr>
<td>Howard Hatfield</td>
<td>Office Manager</td>
<td>San Francisco</td>
<td>51</td>
<td>2008/12/16</td>
<td>$164,500</td>
</tr>
<tr>
<td>Hope Fuentes</td>
<td>Secretary</td>
<td>San Francisco</td>
<td>41</td>
<td>2010/02/12</td>
<td>$109,850</td>
</tr>
<tr>
<td>Vivian Harrell</td>
<td>Financial Controller</td>
<td>San Francisco</td>
<td>62</td>
<td>2009/02/14</td>
<td>$452,500</td>
</tr>
<tr>
<td>Timothy Mooney</td>
<td>Office Manager</td>
<td>London</td>
<td>37</td>
<td>2008/12/11</td>
<td>$136,200</td>
</tr>
<tr>
<td>Jackson Bradshaw</td>
<td>Director</td>
<td>New York</td>
<td>65</td>
<td>2008/09/26</td>
<td>$645,750</td>
</tr>
<tr>
<td>Olivia Liang</td>
<td>Support Engineer</td>
<td>Singapore</td>
<td>64</td>
<td>2011/02/03</td>
<td>$234,500</td>
</tr>
<tr>
<td>Bruno Nash</td>
<td>Software Engineer</td>
<td>London</td>
<td>38</td>
<td>2011/05/03</td>
<td>$163,500</td>
</tr>
<tr>
<td>Sakura Yamamoto</td>
<td>Support Engineer</td>
<td>Tokyo</td>
<td>37</td>
<td>2009/08/19</td>
<td>$139,575</td>
</tr>
<tr>
<td>Thor Walton</td>
<td>Developer</td>
<td>New York</td>
<td>61</td>
<td>2013/08/11</td>
<td>$98,540</td>
</tr>
<tr>
<td>Finn Camacho</td>
<td>Support Engineer</td>
<td>San Francisco</td>
<td>47</td>
<td>2009/07/07</td>
<td>$87,500</td>
</tr>
<tr>
<td>Serge Baldwin</td>
<td>Data Coordinator</td>
<td>Singapore</td>
<td>64</td>
<td>2012/04/09</td>
<td>$138,575</td>
</tr>
<tr>
<td>Zenaida Frank</td>
<td>Software Engineer</td>
<td>New York</td>
<td>63</td>
<td>2010/01/04</td>
<td>$125,250</td>
</tr>
<tr>
<td>Zorita Serrano</td>
<td>Software Engineer</td>
<td>San Francisco</td>
<td>56</td>
<td>2012/06/01</td>
<td>$115,000</td>
</tr>
<tr>
<td>Jennifer Acosta</td>
<td>Junior Javascript Developer</td>
<td>Edinburgh</td>
<td>43</td>
<td>2013/02/01</td>
<td>$75,650</td>
</tr>
<tr>
<td>Cara Stevens</td>
<td>Sales Assistant</td>
<td>New York</td>
<td>46</td>
<td>2011/12/06</td>
<td>$145,600</td>
</tr>
<tr>
<td>Hermione Butler</td>
<td>Regional Director</td>
<td>London</td>
<td>47</td>
<td>2011/03/21</td>
<td>$356,250</td>
</tr>
<tr>
<td>Lael Greer</td>
<td>Systems Administrator</td>
<td>London</td>
<td>21</td>
<td>2009/02/27</td>
<td>$103,500</td>
</tr>
<tr>
<td>Jonas Alexander</td>
<td>Developer</td>
<td>San Francisco</td>
<td>30</td>
<td>2010/07/14</td>
<td>$86,500</td>
</tr>
<tr>
<td>Shad Decker</td>
<td>Regional Director</td>
<td>Edinburgh</td>
<td>51</td>
<td>2008/11/13</td>
<td>$183,000</td>
</tr>
<tr>
<td>Michael Bruce</td>
<td>Javascript Developer</td>
<td>Singapore</td>
<td>29</td>
<td>2011/06/27</td>
<td>$183,000</td>
</tr>
<tr>
<td>Donna Snider</td>
<td>Customer Support</td>
<td>New York</td>
<td>27</td>
<td>2011/01/25</td>
<td>$112,000</td>
</tr>
</tbody>
</table>
<script>
var myRows = [];
var headersText = [];
var $headers = $("th");
// Loop through grabbing everything
var $rows = $("tbody tr").each(function(index) {
$cells = $(this).find("td");
myRows[index] = {};
$cells.each(function(cellIndex) {
// Set the header text
if(headersText[cellIndex] === undefined) {
headersText[cellIndex] = $($headers[cellIndex]).text();
}
// Update the row object with the header/cell combo
myRows[index][headersText[cellIndex]] = $(this).text();
});
});
var el = document.getElementById('tableDat')
el.items=myRows;
</script>
</body>聚合物之外：
_checkMinMaxDate(min,max) {
this.dispatchEvent(new CustomEvent('date-changed', { bubbles: true, composed: true, detail: {items:this.items, startDate:min, endDate:max }}));
}