jquery isotope - sort, layout AND multiple filters - jquery-plugins

Question

I'm trying to create a page with sorting, layout buttons and multiple filters. The isotope homepage is a good example, but there's only one filter there. Using that page I can't figure out how to add more filters that will work together (i.e. colour and size, working together, not one at a time). Below is the code... How do I add another filter?
<div class="option-combo">
<h2>Filter:</h2>
<ul id="filter" class="option-set clearfix" data-option-key="filter">
<li>show all</li>
<li>elements</li>
<li>features</li>
<li>examples</li>
</ul>
</div>
<div class="option-combo">
<h2>Sort:</h2>
<ul id="sort" class="option-set clearfix" data-option-key="sortBy">
<li><a href="#sortBy=original-order" data-option-value="original-order" data>original-order</a></li>
<li>name</li>
<li>year</li>
<li>size</li>
<li>random</li>
</ul>
</div>
<div class="option-combo">
<h2>Layout: </h2>
<ul id="layouts" class="option-set clearfix" data-option-key="layoutMode">
<li>masonry</li>
<li>fitRows</li>
<li>straightDown</li>
</ul>
</div>
And this is the javascript:
$(function(){
var $container = $('#container');
$container.isotope({
masonry: {
columnWidth: 70
},
sortBy: 'year',
sortAscending : false,
getSortData: {
name : function ( $elem ) {
return $elem.find('.name').text();
},
size : function ( $elem ) {
return parseInt( $elem.find('.Size').text().replace( /,/g, ''), 10 );
},
year : function ( $elem ) {
return parseInt( $elem.find('.year').text().replace( /,/g, ''), 10 );
}
}
});
var $optionSets = $('#options .option-set'),
$optionLinks = $optionSets.find('a');
$optionLinks.click(function(){
var $this = $(this);
// don't proceed if already selected
if ( $this.hasClass('selected') ) {
return false;
}
var $optionSet = $this.parents('.option-set');
$optionSet.find('.selected').removeClass('selected');
$this.addClass('selected');
// make option object dynamically, i.e. { filter: '.my-filter-class' }
var options = {},
key = $optionSet.attr('data-option-key'),
value = $this.attr('data-option-value');
// parse 'false' as false boolean
value = value === 'false' ? false : value;
options[ key ] = value;
if ( key === 'layoutMode' && typeof changeLayoutMode === 'function' ) {
// changes in layout modes need extra logic
changeLayoutMode( $this, options )
} else {
// otherwise, apply new options
$container.isotope( options );
}
return false;
});
});

Answer 1

Multiple filters as I understand means selection elements that share multiple properties.
So for example if we have the following isotope items
<div class="isotope-item green big"></div>
<div class="isotope-item green small"></div>
<div class="isotope-item red big"></div>
<div class="isotope-item red small"></div>
<div class="isotope-item yellow big"></div>
If you want to as a filter all the elements that are
red AND big
red OR big
then you can use with the same JavaScript that you have :
<h2>Filter:</h2>
<ul id="filter" class="option-set clearfix" data-option-key="filter">
<li><a data-option-value="*" class="selected">Show All</a></li>
<li><a data-option-value=".red">Show Red Elements</a></li>
<li><a data-option-value=".big">Show Big Elements</a></li>
<li><a data-option-value=".red, big">Show Elements Red OR Big</a></li>
<li><a data-option-value=".red.big">Show Elements Red AND Big</a></li>
</ul>
The filter works with a simple jQuery selector. Everything that matches the selection is shown, the rest is hidden.

Answer 2

I tried to explain my approach on this question here.
Basically the idea is to look for a restrictive AND condition using the isotope function properly in your onclick event.