我有一个包含许多字段和两个日期字段的 MySQL 表 created_at 和 updated_at。
我想要 DataTables 中的一列具有这两个字段之间的时间差。
我正在为数据表和 ssp.class.php 使用选项 serverSide:true。
下面是我的代码。
<?php
error_reporting("E_ALL");
if (isset($_GET['ajax'])) {
$table = 'table_here';
// Table's primary key
$primaryKey = 'id';
// Array of database columns which should be read and sent back to DataTables.
// The `db` parameter represents the column name in the database, while the `dt`
// parameter represents the DataTables column identifier. In this case simple
// indexes
$columns = array(
array('db' => 'type', 'dt' => 0),
array('db' => 'uniqueid', 'dt' => 1),
array('db' => 'created_at', 'dt' => 8),
array('db' => 'updated_at', 'dt' => 9), );
require('ssp.class.php');
echo json_encode(
SSP::simple($_GET, $sql_details, $table, $primaryKey, $columns));
exit();
}
?>
$(document).ready(function () {
const table = $('#example').DataTable({
"columnDefs": [{
"targets": [7],
"visible": false,
}
],
"processing": true,
"serverSide": true,
"ajax": "url"
});
});
最佳答案
您可能希望为此目的使用 columns.render，例如:
const dataTables = $('#mytable').DataTable({
...
columns: [
...
{title: 'delta', data: null, render: (data, type, row, meta) => {
//translate your timestamp strings into actual Date
const created = new Date(row.created);
const updated = new Date(row.updated);
//calculate the difference in seconds and return as a cell contents
return Math.round((updated-created)/1000);
}
}
]
});
您可以在下面找到演示
//sample source data
const dataSrc = [
{id: 1, created: '16 Apr 2019, 16:10:15', updated: '16 Apr 2019, 16:15:21'},
{id: 2, created: '16 Apr 2019, 16:15:08', updated: '16 Apr 2019, 16:25:18'},
{id: 3, created: '16 Apr 2019, 16:20:01', updated: '16 Apr 2019, 16:21:15'}
];
//DataTables initialization
const dataTables = $('#mytable').DataTable({
dom: 't',
data: dataSrc,
columns: [
{title: 'id', data: 'id'},
{title: 'created', data: 'created'},
{title: 'updated', data: 'updated'},
{title: 'delta', data: null, render: (data, type, row, meta) => {
const created = new Date(row.created);
const updated = new Date(row.updated);
return Math.round((updated-created)/1000);
}
}
]
});<!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>
<link rel="stylesheet" type="text/css" href="https://cdn.datatables.net/1.10.19/css/jquery.dataTables.min.css">
</head>
<body>
<table id="mytable"></table>
</body>
</html>关于javascript - 如何将自定义列添加到数据表中，其值来自其他两个字段的时差，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/55705432/