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Last active October 8, 2023 15:07
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How to sort a collection in Shopify based on a custom metafield.
<!--
This code displays the dropdown for the options to sort from.
Adapted from https://gist.github.com/carolineschnapp/11352987
It will be inserted on every collections page. Probably in a snippet called something like collection-sorting.liquid
-->
<div class="form-horizontal">
<label for="SortBy" class="uppercase">{{ 'collections.sorting.title' | t }}&nbsp;</label>
<select name="SortBy" id="SortBy">
<option value="upcoming-events">Upcoming events</option>
<option value="best-selling">{{ 'collections.sorting.best_selling' | t }}</option>
<option value="title-ascending">{{ 'collections.sorting.az' | t }}</option>
<option value="title-descending">{{ 'collections.sorting.za' | t }}</option>
</select>
</div>
<script>
Shopify.queryParams = {};
if (location.search.length) {
for (var aKeyValue, i = 0, aCouples = location.search.substr(1).split('&'); i < aCouples.length; i++) {
aKeyValue = aCouples[i].split('=');
if (aKeyValue.length > 1) {
console.log(aKeyValue);
Shopify.queryParams[decodeURIComponent(aKeyValue[0])] = decodeURIComponent(aKeyValue[1]);
}
}
}
$(function() {
$('#SortBy')
.val('{{ collection.sort_by | default: 'upcoming-events' }}')
.bind('change', function() {
Shopify.queryParams.sort_by = jQuery(this).val();
console.log(Shopify.queryParams);
location.search = jQuery.param(Shopify.queryParams);
}
);
});
</script>
<!--
This code is the modification needed for each product rendered by liquid.
We need to tag each product with the custom metafield here.
You'll probably be editing a snippet like product-grid-item.liquid
-->
<div data-date="{{ product.metafields.global.date }}">
<!-- the rest of your product ... -->
</div>
<!--
Then in the collection.liquid template itself:
1.
First make sure that all products appear on the one page by increasing
the paginate by amount. I've set it to 100 in my case.
2.
Then we check what is being sorted on. If it's the custom metafield we
re-arrange the DOM elements using this code.
Adapted from http://trentrichardson.com/2013/12/16/sort-dom-elements-jquery/
-->
{% paginate collection.products by 100 %}
<script>
var searchQuery = /sort_by=(.+)/g.exec(window.location.search);
if(searchQuery === null || searchQuery[1] === 'upcoming-events') {
var eventListContainer = $('.event-container');
var eventList = eventListContainer.children('div');
eventList.sort(function(a,b) {
var event1date = new Date(a.getAttribute('data-date'));
var event2date = new Date(b.getAttribute('data-date'));
if(event1date > event2date) {
return 1;
}
if(event1date < event2date) {
return -1;
}
return 0;
});
eventList.detach().appendTo(eventListContainer);
}
</script>
@cinghaman
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Which div is this? Where do we define this var eventListContainer = $('.event-container');?

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