我有一个来自数据库的DataTables表。当我从数据集中选择行时，我想启用下拉菜单。下拉列表中将填充该列中的每个选项。
已建议使用rowCallback完成此操作，但是一旦启用此复选框，我就无法弄清楚如何为每一列创建可编辑字段。
该函数在选择时将导致该行的“类别”和“类别”单元格成为下拉菜单，其中包含“类别”和“类别”中的所有现有选项。
HTML
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
<link rel="stylesheet" type="text/css" href="https://cdn.datatables.net/select/1.3.0/css/select.dataTables.min.css" media="screen" />
<link rel="stylesheet" type="text/css" href="https://cdn.datatables.net/buttons/1.5.6/css/buttons.dataTables.min.css" media="screen" />
<script charset="utf8" src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script charset="utf8" src="https://cdn.datatables.net/1.10.19/js/jquery.dataTables.min.js"></script>
<script charset="utf8" src="https://cdn.datatables.net/select/1.3.0/js/dataTables.select.min.js"></script>
<script charset="utf8" src="https://cdn.datatables.net/buttons/1.5.6/js/dataTables.buttons.min.js"></script>
<script charset="utf8" src="https://cdn.datatables.net/buttons/1.5.6/js/buttons.flash.min.js"></script>
<script charset="utf8" src="https://cdn.datatables.net/buttons/1.5.6/js/buttons.html5.min.js"></script>
<script charset="utf8" src="https://cdn.datatables.net/buttons/1.5.6/js/buttons.print.min.js"></script>
<script charset="utf8" src="https://editor.datatables.net/extensions/Editor/js/dataTables.editor.min.js"></script>
</head>
</html>
<body>
<div class="container">
<table id="samples" class="display nowrap compact hover dt-left" width="100%"></table>
</table>
</form>
<script type="text/javascript" charset="utf8" src="JS/datatables.js"></script>
</body>
jQuery
$(document).ready( function () {
var table = $('#samples').DataTable( {
"processing": true,
"serverSide": false,
"pageLength": -1,
"lengthMenu": [[100, 250, 500, -1], [100, 250, 500, "All"]],
ajax: "datatables.php",
columns: [
{data: '',
defaultContent: '0',
visible: false },
{data: '',
defaultContent: '',
orderable: false,
className: 'select-checkbox',
targets: 1
},
{title : 'Sample Name', 'className': 'dt-left', data: 1},
{title : 'Region/Program', 'className': 'dt-left', data: 2},
{title : 'Class', 'className': 'dt-left', data: 3},
{title : 'Category', 'className': 'dt-left', data: 4},
{title : 'QC Concerns', 'className': 'dt-left', data: 5}
],
select: {
style: 'multi',
},
order: ([[ 4, 'asc' ], [ 5, 'asc' ], [ 3, 'asc' ]]),
orderFixed: [0, 'desc'],
dom: 'Bfrtip',
buttons: [
{
extend: 'excel',
text: '<span class="fa fa-file-excel-o"></span> Download (ALL) or (SELECTED)',
exportOptions: {
columns: [ 2, 5 ],
modifier: {
search: 'applied',
order: 'applied'
}
}
},
{
text: 'Use Selected Library',
action: function ( e, dt, node, config) {
alert( 'This buton needs to pass the Sample Name and Category columns to php.' );
}
},
{
text: 'Upload Predefined Library',
action: function ( e, dt, node, conf ) {
alert( 'This button needs to allow a csv file to be uploaded and passed to php.' );
}
}
]
} );
table.on( 'select', function ( e, dt, type, indexes ) {
if ( type === 'row' ) {
var row = table.row( dt );
table.cell({ row: row.index(), column: 0 } ).data( '1' );
table.draw();
}
});
table.on( 'deselect', function ( e, dt, type, indexes ) {
if ( type === 'row' ) {
var row = table.row( dt );
table.cell({ row: row.index(), column: 0 } ).data( '0' );
table.draw();
}
});
} );
数据样本
const srcData = [
{Name: '752', Region: '7', Class : 'unknown', Category : 'unknown', QC_Concerns: 'yes'},
{Name: 'North 5th', Region: 'NWA', Class : 'unknown', Category : 'square', QC_Concerns: 'yes'},
{Name: 'Elmdale', Region: '6', Class : 'back', Category : 'circle', QC_Concerns: ''},
{Name: 'Rosebud', Region: '7', Class : 'back', Category : 'triangle', QC_Concerns: ''},
{Name: 'Letterkenny', Region: 'GO', Class : 'back', Category : 'square', QC_Concerns: ''},
{Name: '632nd', Region: 'GO', Class : 'front', Category : 'ball', QC_Concerns: ''},
{Name: 'Water', Region: '4', Class : 'front', Category : 'ball', QC_Concerns: ''},
{Name: 'Dirt', Region: '1', Class : 'front', Category : 'mermaid', QC_Concerns: ''},
];
答案 0 :(得分：1)
我无法理解您的示例数据结构，因此我演示了如何使用我自己的数据结构：
$dow_numeric += 1//table source data
const srcData = [{
id: 1,
item: 'apple',
category: 'fruit'
}, {
id: 2,
item: 'banana',
category: 'fruit'
}, {
id: 3,
item: 'carrot',
category: 'vegie'
}, {
id: 4,
item: 'raspberry',
category: 'berry'
}, {
id: 5,
item: 'potato',
category: 'vegie'
}
];
//DataTable initialization
const dataTable = $('#mytable').DataTable({
dom: 't',
data: srcData,
select: 'multi',
columns: Object.keys(srcData[0]).map(key => {
return {
title: key,
data: key
}
})
});
//grab all the unique sorted data entries from the necessary row
const category = dataTable.column(2).data().unique().sort();
//Row click handler
dataTable.on('deselect', (event, row, type, index) => writeCell($(row.node()).find('select')));
dataTable.on('select', (event, row, type, index) => $(row.node()).find('td:eq(2)').html('<select>' + category.reduce((options, item) => options += `<option value="${item}" ${item == row.data().category ? 'selected' : ''}>${item}</option>`, '') + '</select>'));
//Drop down menu stop event propagation
$('#mytable').on('click', 'tbody td select', event => event.stopPropagation());
//Write dropdown value into table
var writeCell = dropdown => {
const currentRow = dataTable.row(dropdown.closest('tr'));
const rowData = currentRow.data();
rowData.category = dropdown.val();
currentRow.remove();
dataTable.row.add(rowData).draw();
};tbody tr:hover {
background: lightgray !important;
cursor: pointer;
}
tbody tr.selected {
background: gray !important;
}
答案 1 :(得分：0)
这会将ddl添加到该列中的所有值。
initComplete: function () { // After DataTable initialized
this.api().columns([2]).every(function () {
/* use of [2] for third column. Leave blank - columns() - for all.
Multiples? Use columns[0,1]) for first and second, e.g. */
var column = this;
var select = $('<select><option value=""/></select>')
.appendTo($('.datatable .dropdown .third').empty()) /* for multiples use .appendTo( $(column.header()).empty() ) or .appendTo( $(column.footer()).empty() ) */
.on('change', function () {
var val = $.fn.dataTable.util.escapeRegex(
$(this).val()
);
column
.search(val ? '^' + val + '$' : '', true, false)
.draw();
});
column.data().unique().sort().each(function (d, j) {
select.append('<option value="' + d + '">' + d + '</option>')
});
}); // this.api function
} //initComplete function
});
});
$(window).resize(function () {
$('.datatable').removeAttr('style');
});