I'm working with handsontable and want to append data with an infinite scroll. I can achieve this with a simplified example using:
Array.prototype.push.apply
I expected to find a handsontable method that would allow me to append data, however I have searched and searched and found nothing. Perhaps I'm missing something and if so I'd really appreciate any direction you can offer.
Here is my simplified infinite scroll example:
$(document).ready(function () {
var data = [
["", "Maserati", "Mazda", "Mercedes", "Mini", "Mitsubishi"],
["2000", 0, 2941, 4303, 354, 5814],
["2001", 5, 2905, 2867, 412, 5284],
["2002", 0, 2941, 4303, 354, 5814],
["2003", 5, 2905, 2867, 412, 5284],
["2004", 4, 2517, 4822, 552, 6127],
["2005", 0, 2941, 4303, 354, 5814],
["2006", 5, 2905, 2867, 412, 5284],
["2007", 4, 2517, 4822, 552, 6127],
["2008", 0, 2941, 4303, 354, 5814],
["2009", 5, 2905, 2867, 412, 5284],
["2010", 4, 2517, 4822, 552, 6127],
["2011", 2, 2422, 5399, 776, 4151],
["2012", 0, 2941, 4303, 354, 5814],
["2013", 5, 2905, 2867, 412, 5284],
["2014", 4, 2517, 4822, 552, 6127],
["2015", 2, 2422, 5399, 776, 4151],
];
var moreData = [
["2016", 10, 11, 12, 13, 14],
["2017", 20, 11, 14, 14, 10],
["2018", 30, 15, 12, 13, 25],
["2019", 20, 11, 14, 14, 10],
["2020", 30, 15, 12, 13, 25]
];
var $container2 = $("#HoT2");
$container2.handsontable({
data: data,
colHeaders: true,
contextMenu: true,
});
$(window).scroll(function () {
if($(document).height() <= $(window).scrollTop() + $(window).height()) {
appendHOT2();
}
});
function appendHOT2() {
// rowCount = $container2.handsontable('countRows'); console.log("Row Count: "+rowCount);
// $container2.handsontable('alter', 'insert_row', rowCount, 3); // Add set number of empty rows
var hotData = $container2.handsontable('getData');
Array.prototype.push.apply(hotData, moreData);
console.log("Array: "+ hotData);
$container2.handsontable('loadData', hotData); //Replaces current data doesn't append
}
});</style><!-- Ugly Hack due to jsFiddle issue --><script src="http://docs.handsontable.com/scripts/jquery.min.js"></script> <script src="http://docs.handsontable.com/bower_components/handsontable/dist/handsontable.full.js"></script> <link type="text/css" rel="stylesheet" href="http://docs.handsontable.com//bower_components/handsontable/dist/handsontable.full.min.css"> <link rel="stylesheet" media="screen" href="http://handsontable.com/demo/css/samples.css"><h2>Infinite Scroll - Simple Load More Rows</h2>
<div id="HoT2" class="handsontable"></div>In reality I want to do something more complex with object data (from an ajax call), but I don't know how to update handsontable with the data and formatting.
Here's my example as far as I've taken it:
$(document).ready(function () {
var colHeaders = [
'ID','Name','Address'
];
var mergeCells = [
{row:0, col:0, rowspan:2, colspan:1},
{row:0, col:1, rowspan:2, colspan:1},
{row:0, col:2, rowspan:1, colspan:1},
{row:2, col:0, rowspan:1, colspan:1},
{row:2, col:1, rowspan:1, colspan:1},
{row:2, col:2, rowspan:1, colspan:1},
{row:3, col:0, rowspan:1, colspan:1},
{row:3, col:1, rowspan:1, colspan:1},
{row:3, col:2, rowspan:1, colspan:1},
{row:4, col:0, rowspan:2, colspan:1},
{row:4, col:1, rowspan:2, colspan:1},
{row:4, col:2, rowspan:1, colspan:1},
{row:5, col:0, rowspan:1, colspan:1},
{row:5, col:1, rowspan:1, colspan:1},
{row:5, col:2, rowspan:1, colspan:1},
{row:6, col:0, rowspan:1, colspan:1},
{row:6, col:1, rowspan:1, colspan:1},
{row:6, col:2, rowspan:1, colspan:1},
];
var data = [
{id: 1, name: 'Ted Right', address: 'A1'},
{id: 1, name: 'Ted Right', address: 'A2'},
{id: 2, name: 'Frank Honest', address: 'B'},
{id: 3, name: 'Joan Well', address: 'C'},
{id: 4, name: 'Gail Polite', address: 'D1'},
{id: 4, name: 'Gail Polite', address: 'D2'},
{id: 5, name: 'Michael Fair', address: 'E'},
];
var moreData = [
{id: 6, name: 'Ted 2Right', address: 'F'},
{id: 7, name: 'Frank 2Honest', address: 'G1'},
{id: 7, name: 'Frank 2Honest', address: 'G2'},
{id: 8, name: 'Joan 2Well', address: 'H'},
{id: 9, name: 'Gail 2Polite', address: 'I1'},
{id: 9, name: 'Gail 2Polite', address: 'I2'},
{id: 9, name: 'Gail 2Polite', address: 'I3'},
{id: 10, name: 'Michael 2Fair', address: 'J'},
];
var moreMergeCells = [
{row:7, col:0, rowspan:1, colspan:1},
{row:7, col:1, rowspan:1, colspan:1},
{row:7, col:2, rowspan:1, colspan:1},
{row:8, col:0, rowspan:2, colspan:1},
{row:8, col:1, rowspan:2, colspan:1},
{row:8, col:2, rowspan:1, colspan:1},
{row:9, col:0, rowspan:1, colspan:1},
{row:9, col:1, rowspan:1, colspan:1},
{row:9, col:2, rowspan:1, colspan:1},
{row:10, col:0, rowspan:3, colspan:1},
{row:10, col:1, rowspan:3, colspan:1},
{row:10, col:2, rowspan:1, colspan:1},
{row:11, col:0, rowspan:1, colspan:1},
{row:11, col:1, rowspan:1, colspan:1},
{row:11, col:2, rowspan:1, colspan:1},
];
var $container = $("#HoT2");
$container.handsontable({
data: data,
colHeaders: colHeaders,
mergeCells: mergeCells,
contextMenu: false,
});
$(window).scroll(function () {
if($(document).height() <= $(window).scrollTop() + $(window).height()) {
appendHOT2();
}
});
function appendHOT2() {
console.log("Append Data and MergeCells...");
// Append moreData and moreMergeCells data to the handsontable display
// How can this be achieved?
}
});</style><!-- Ugly Hack due to jsFiddle issue --> <script src="http://docs.handsontable.com/scripts/jquery.min.js"></script> <script src="http://docs.handsontable.com/bower_components/handsontable/dist/handsontable.full.js"></script> <link type="text/css" rel="stylesheet" href="http://docs.handsontable.com//bower_components/handsontable/dist/handsontable.full.min.css"> <link rel="stylesheet" media="screen" href="http://handsontable.com/demo/css/samples.css"><h2>Infinite Scroll - Load More Formatted Rows</h2>
<div id="HoT2" class="handsontable"></div>Thanks in advance!
As mentioned in my comment, if you want to update the settings of your table when scrolling (ref: updating the mergeCells setting), a more generic function is, IMO, mandatory... At least, much simpler :)
This line is what you need to do every time you scroll :
$container.handsontable('updateSettings', ({mergeCells: merge()}));
(you will note that I used it once after the initialisation of the table).
See the function below which, based on the structure of your data in your example, merge the columns 1 and 2 if the value of the column 1 repeat itself :
function merge() {
var mergeCells=[], rowspan=1, tempName = '';
for(var i=0; i<$container.handsontable('getData').length;i++) {
if ($container.handsontable('getDataAtCell', i,1) === tempName) {
rowspan+=1;
}
else {
mergeCells.push({row:i-rowspan, col:0, rowspan:rowspan, colspan:1})
mergeCells.push({row:i-rowspan, col:1, rowspan:rowspan, colspan:1})
rowspan=1
}
tempName = $container.handsontable('getDataAtCell', i,1);
}
return mergeCells;
}
You can find the complete and working example in this JSFiddle.