关闭所有组行时，DataTable显示0条记录吗？
我正在尝试在DataTables中使用行分组。我已经达到了对行进行分组的一个里程碑，但是我的折叠功能无法正常工作。当我折叠时，DataTable的所有组均显示0条记录。我需要至少显示组行，才能再次显示数据。
以下是我的代码：
var collapsedRows = [];
var table;
var groupCollapseFilter = function (groupName) {
return function (settings, searchData, index, rowData, counter) {
return searchData[3].indexOf(groupName) == -1;
};
};
$(function () {
table = $("#MyTable").DataTable({
"order": [[3, 'asc']],
"paging": false,
drawCallback: function () {
var api = this.api();
var displayRowIds = api.settings()[0].aiDisplay;
var rows = api.rows(displayRowIds).nodes();
var last = null;
for (var r = 0, rMax = collapsedRows.length; r < rMax; r++)
{
$(rows).eq(0).before(collapsedRows[r]);
$(collapsedRows[r]).addClass("collapsed");
}
api.table().rows(displayRowIds)
.every(function (rowIdx, tableLoop, rowLoop) {
var data = this.data();
if (last !== data[3]) {
$(rows).eq(rowLoop).before(
'<tr class="group"><td colspan="7">' + data[3] + '</td></tr>'
);
last = data[3];
}
});
}
});
现在，实现点击功能：
$("#MyTable").on('click', 'tr.group', function () {
var groupName = $(this.children[0]).text();
if ($(this).hasClass("collapsed")) {
$.fn.dataTable.ext.search.splice($.fn.dataTable.ext.search.indexOf(groupCollapseFilter(groupName)), 1);
$(this).removeClass("collapsed");
collapsedRows.splice(collapsedRows.indexOf(this), 1);
table.draw();
} else {
collapsedRows.push(this);
$.fn.dataTable.ext.search.push(groupCollapseFilter(groupName));
table.draw();
}
});
我正在关注this tutorial.
2 个答案:
答案 0 :(得分：0)
要求：
- 您想要折叠功能
- 也可以通过DataTable折叠所有组，以显示标题
请检查以下代码：
$(document).ready(function() {
var table = $('#example').DataTable({
"columnDefs": [
{ "visible": false, "targets": 2 }
],
"order": [[ 2, 'asc' ]],
"displayLength": 25,
"drawCallback": function ( settings ) {
var api = this.api();
var rows = api.rows( {page:'current'} ).nodes();
var last=null;
var groupadmin = [];
api.column(2, {page:'current'} ).data().each( function ( group, i ) {
if ( last !== group ) {
$(rows).eq( i ).before(
'<tr class="group" id="'+i+'"><td colspan="5">'+group+'</td></tr>'
);
groupadmin.push(i);
last = group;
}
} );
for( var k=0; k < groupadmin.length; k++){
// Code added for adding class to sibling elements as "group_<id>"
$("#"+groupadmin[k]).nextUntil("#"+groupadmin[k+1]).addClass(' group_'+groupadmin[k]);
// Code added for adding Toggle functionality for each group
$("#"+groupadmin[k]).click(function(){
var gid = $(this).attr("id");
$(".group_"+gid).slideToggle(300);
});
}
}
} );
} );body {
font: 90%/1.45em "Helvetica Neue", HelveticaNeue, Verdana, Arial, Helvetica, sans-serif;
margin: 0;
padding: 0;
color: #333;
background-color: #fff;
}
tr.group,
tr.group:hover {
background-color: #ddd !important;
cursor:pointer;
}<link href="https://cdn.datatables.net/1.10.12/css/jquery.dataTables.min.css" rel="stylesheet"/>
<script src="//code.jquery.com/jquery-1.12.3.min.js"></script>
<script src="https://cdn.datatables.net/1.10.12/js/jquery.dataTables.min.js"></script>
<table id="example" class="display" cellspacing="0" width="100%">
<thead>
<tr>
<th>Name</th>
<th>Position</th>
<th>Office</th>
<th>Age</th>
<th>Start date</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>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>
答案 1 :(得分：0)
/*
I have enhanced your javascript function.
*/
var collapsedRows = [];
var table;
var groupCollapseFilter = function (groupName) {
return function (settings, searchData, index, rowData, counter) {
return searchData[3].indexOf(groupName) == -1;
};
};
$(function () {
table = $("#MyTable").DataTable({
"order": [[3, 'asc']],
"paging": false,
drawCallback: function () {
var api = this.api();
var displayRowIds = api.settings()[0].aiDisplay;
var rows = api.rows(displayRowIds).nodes();
var last = null;
for (var r = 0, rMax = collapsedRows.length; r < rMax; r++)
{
$(rows).eq(0).before(collapsedRows[r]);
$(collapsedRows[r]).addClass("collapsed");
}
api.table().rows(displayRowIds)
.every(function (rowIdx, tableLoop, rowLoop) {
var data = this.data();
if (last !== data[3]) {
$(rows).eq(rowLoop).before(
'<tr class="group"><td colspan="7">' + data[3] + '</td></tr>'
);
last = data[3];
}
});
/*
Following code will check if the table is empty, then append the collapsed rows to it.
*/
if (table is empty) {
$(table)
.find("tbody")
.html(collapsedRows);
}
}
});
让我解释一下我对您的代码的理解。
- 根据特定列中的值对行进行分组
- 单击行标题时，它会折叠或展开。
- 所有列标题都折叠时，您的表为空。相反，您想要显示所有折叠的标题。
- 因此，我修改了drawCallback函数以进行检查。 如果该表为空，请在表中附加collapsedRows数组内容。
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