我有一个来自数据库的 DataTables 表。我想在从数据集中选择行时启用下拉菜单。下拉列表将填充该列中的每个选项。
有人建议使用 rowCallback 来完成此操作，但我无法弄清楚如何在启用复选框后按行创建可编辑字段。
该函数在选择时会导致该行的“类别”和“类别”单元格变成下拉菜单，其中填充了“类别”和“类别”中可供选择的所有现有选项。
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: ''},
];
最佳答案
我无法理解您的示例数据结构，因此我使用自己的方法演示了如何完成它:
//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;
}<!doctype html>
<html>
<head>
<script type="application/javascript" src="https://code.jquery.com/jquery-3.3.1.min.js"></script>
<script type="application/javascript" src="https://cdn.datatables.net/1.10.19/js/jquery.dataTables.min.js"></script>
<script type="application/javascript" src="https://cdn.datatables.net/select/1.3.0/js/dataTables.select.min.js"></script>
<link rel="stylesheet" type="text/css" href="https://cdn.datatables.net/1.10.19/css/jquery.dataTables.min.css">
<link rel="stylesheet" type="text/css" href="https://cdn.datatables.net/select/1.3.0/css/select.dataTables.min.css">
</head>
<body>
<table id="mytable"></table>
</body>
</html>关于javascript - jQuery DataTables 使用下拉选择就地编辑单元格，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/55228782/