@reactual/handsontable
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Spreadsheet-like data grid editor
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HTML
<html>
<head>
<meta charset='utf-8'>
<title>Backbone.js - Handsontable</title>
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<meta property="og:title" content="Integrate with Backbone.js">
<meta property="og:description"
content="Bind your Backbone collections to Handsontable">
<meta property="og:url" content="http://handsontable.com/demo/backbone.html">
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</head>
<body>
<div class="wrapper">
<div class="wrapper-row">
<div id="global-menu-clone">
<h1><a href="../index.html">Handsontable</a></h1>
</div>
<div id="container">
<div class="columnLayout">
<div class="rowLayout">
<div class="descLayout">
<div class="pad" data-jsfiddle="example1">
<h2>Backbone.js</h2>
<p>
<a href="http://backbonejs.org/">Backbone.js</a> is a client-side
MV* framework that can do some pretty smart things
with data going to and coming back from a server, and has a great
event model for keeping multiple views in sync.
</p>
<p>
This little example shows how Backbone Models and Collections can
work with Handsontable. Below, you'll see events firing from
changes in the <code>CarCollection</code> by Handsontable or
otherwise.
</p>
<div id="example1"></div>
<p>
<button name="dump" data-instance="hot" data-dump="#example1" title="Prints current data source to Firebug/Chrome Dev Tools">
Dump data to console
</button>
<button id="add_car">Simulate a new Car</button>
<br>
<select multiple="multiple" id="example1_events" style="width: 100%; height: 100px"></select>
</p>
<p>
<strong>Please note</strong> that Backbone integration is a work in progress since Handsontable 0.8.14.
The code presented here has 2 known issues:
</p>
<ul>
<li>inserting and removing rows or columns triggers errors, both when using <code>alter</code> method and
the context menu
</li>
<li><code>minSpareRows</code> does not have effect directly after row was added from Backbone (as a
workaround, you would need to call <code>loadData</code> instead of <code>render</code>)
</li>
</ul>
<p>
Both issues will be addressed in future versions of HT. Contributions are welcome!
</p>
</div>
</div>
<div class="codeLayout">
<div class="pad">
<div class="jsFiddle">
<button class="jsFiddleLink" data-runfiddle="example1">Edit in jsFiddle</button>
</div>
<script data-jsfiddle="example1">
var
container = document.getElementById('example1'),
addCar = document.getElementById('add_car'),
eventHolder = document.getElementById('example1_events'),
CarModel = Backbone.Model.extend({}),
CarCollection,
cars,
hot;
CarCollection = Backbone.Collection.extend({
model: CarModel,
// Backbone.Collection doesn't support `splice`, yet! Easy to add.
splice: hackedSplice
});
cars = new CarCollection();
// since we're not using a server... make up some data. This will make
// a couple CarModels from these plain old objects
cars.add([
{make: 'Dodge', model: 'Ram', year: 2012, weight: 6811},
{make: 'Toyota', model: 'Camry', year: 2012, weight: 3190},
{make: 'Smart', model: 'Fortwo', year: 2012, weight: 1808}
]);
hot = new Handsontable(container, {
data: cars,
dataSchema: makeCar,
contextMenu: true,
columns: [
attr('make'),
attr('model'),
attr('year')
],
colHeaders: ['Make', 'Model', 'Year']
// minSpareRows: 1 //see notes on the left for `minSpareRows`
});
// this will log all the Backbone events getting fired!
cars.on('all', logEvents)
.on('add', function () {
hot.render();
})
.on('remove', function () {
hot.render();
});
// you'll have to make something like these until there is a better
// way to use the string notation, i.e. "bb:make"!
// normally, you'd get these from the server with .fetch()
function attr(attr) {
// this lets us remember `attr` for when when it is get/set
return {data: function (car, value) {
if (_.isUndefined(value)) {
return car.get(attr);
}
car.set(attr, value);
}};
}
// just setting `dataSchema: CarModel` would be great, but it is non-
// trivial to detect constructors...
function makeCar() {
return new CarModel();
}
// use the "good" Collection methods to emulate Array.splice
function hackedSplice(index, howMany /* model1, ... modelN */) {
var args = _.toArray(arguments).slice(2).concat({at: index}),
removed = this.models.slice(index, index + howMany);
this.remove(removed).add.apply(this, args);
return removed;
}
// show a log of events getting fired
function logEvents(event, model) {
var now = new Date(),
option = document.createElement('OPTION');
option.innerHTML = [':', now.getSeconds(), ':', now.getMilliseconds(), '[' + event + ']',
JSON.stringify(model)].join(' ');
eventHolder.insertBefore(option, eventHolder.firstChild);
}
Handsontable.dom.addEvent(addCar, 'click', function () {
cars.add({make: "Tesla", model: "S", year: 2012, weight: 4647.3});
});
</script>
</div>
</div>
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