I am currently programming a crawler in Python. This crawler is storing data in a mongoDB database. I would like to load the data dynamically into a table without having to reload the whole page.
My current (relevant) code is looking like this:
var $tagsLabel = $("<lable>")
var $tagsInput = $("<textarea>");
/* Formatting function for row details - modify as you need */
function format(d) {
// `d` is the original data object for the row
return '<table cellpadding="5" cellspacing="0" border="0" style="padding-left:50px;">' +
'<tr>' +
'<td>Raw text:</td>' +
'<td>' + d.Raw_html + '</td>' +
'</tr>' +
'</table>';
}
$(document).ready(function () {
$table = $("#dataTable")
.on("preInit.dt", function (e, settings) {
$tagsLabel.append($tagsInput);
$('.dataTables_tags').append($tagsLabel)
})
.on("init.dt", function (e, settings) {
$tagsInput.tagEditor({
delimiter: ', ',
placeholder: 'Enter search tags ...',
onChange: function (field, editor, tags) {
if (tags.length) {
if (tags.length > 1) {
$table.search(tags.join('|'), true, false).draw();
} else {
$table.search(tags[0]).draw();
}
} else {
$table.search('').draw(true);
}
},
});
})
.DataTable({
"dom": '<l<"dataTables_tags"><t>ip>',
"ajax": '/json-int',
"columns": [
{
"class": 'details-control',
"orderable": false,
"data": null,
"defaultContent": '',
width: "5px"
},
{"data": "Timestamp", width: "135px"},
{"data": "Title"},
{"data": "Url"},
{"data": "domain"},
{"data": "Type"},
{"data": "Raw_html", "visible": false}
//{"data": "Raw_html", "visible": false}
],
"order": [[1, 'asc']]
});
// Add event listener for opening and closing details
$('#dataTable tbody').on('click', 'td', function () {
var tr = $(this).closest('tr');
var row = $table.row(tr);
if (row.child.isShown()) {
// This row is already open - close it
row.child.hide();
tr.removeClass('shown');
} else {
// Open this row
row.child(format(row.data()), 'no-padding').show();
tr.addClass('shown');
}
});
$('#dataTable tbody').on('click', 'td > button', function (e) {
alert('Tada!');
return false;
});
});
<table id="dataTable" class="table table-striped table-hover table-bordered table-condensed"
style="width: 100%; font-size: 12px" role="grid">
<thead>
<tr>
<th></th>
<th>Timestamp</th>
<th>Title</th>
<th>URL</th>
<th>Domain</th>
<th>Page Type</th>
</tr>
</thead>
<tfoot>
<tr>
<th></th>
<th>Timestamp</th>
<th>Title</th>
<th>URL</th>
<th>Domain</th>
<th>Page Type</th>
</tr>
</tfoot>
</table>
The function I'm trying to use to update the table dynamically:
function updateTable() {
$(document).ready(function () {
var t = $('#dataTable').DataTable();
$.ajax({
type: "GET",
url: "/json",
}).done(function (data) {
var parsed = JSON.parse(data);
parsed.forEach((obj, i) => {
t.row.add([
obj.Timestamp,
obj.Title,
obj.Url,
obj.domain,
obj.Type,
obj.Raw_html
]).draw(false);
});
}).fail(function (jqXHR, textStatus, errorThrown) {
console.log(jqXHR, textStatus, errorThrown);
})
});
}
setInterval(updateTable, 5000);
The table is loading fine and if I reload the whole page, the data is loaded into the DataTable. Every time the function is running to update the table dynamically, I get the following error:
DataTables warning: table id=dataTable - Requested unknown parameter 'Timestamp' for row 0, column 1. For more information about this error, please see http://datatables.net/tn/4
I posted an example of the data I am trying to load dynamically into the table: https://myjson.com/re9cu
Hopefully someone can point me in the right direction.
EDIT: Sorry, maybe I did not describe the question clear enough. When I load the page the data is loaded. But I would like to add new rows to the table when there is new data. the /json is providing this new data each time it is requested.
