First of all, we need to create several files:
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touch app/design/frontend/<your_vendor_name>/<your_theme_name>/Magento_Catalog/layout/catalog_product_view.xml touch app/design/frontend/<your_vendor_name>/<your_theme_name>/requirejs-config.js touch app/design/frontend/<your_vendor_name>/<your_theme_name>/web/js/toggle-product-description.js touch app/design/frontend/<your_vendor_name>/<your_theme_name>/Magento_Catalog/templates/more-less.phtml touch app/design/frontend/<your_vendor_name>/<your_theme_name>/web/css/source/_theme.less |
Let’s review these files and see here description for each one regarding which code will be placed inside of them:
Use this file to register your own JavaScript component:
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var config = { map: { "*": { // alias: path-to-corresponding-js-file toggleProductDescription: 'js/toggle-product-description' } } }; |
Inside of the content container, a new block is created with a specified template file that is going to be used:
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<?xml version="1.0"?> <page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd"> <body> <referenceContainer name="content"> <block class="Magento\Framework\View\Element\Template" name="more-less-js" template="Magento_Catalog::more-less.phtml" /> </referenceContainer> </body> </page> |
This file contains the basic configuration of the more/less functionality.
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<script type="text/x-magento-init"> { ".product.attribute.description .value":{ "toggleProductDescription":{ "contentMaxHeight": 200 } } } </script> |
Place all of your JavaScript logic in this file. Skeleton of such a JavaScript component should be like this:
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define([ "jquery", // declare your libraries, if you are using them ], function ($) { // delare library aliases 'use strict'; return function (config, node) { var moreLess = { button: { el: $("<a>", { id: "toggle-description", href: "#" }), expanded_text: "- Less", collapsed_text: "+ More" }, target: { el: $(node), height: $(node).height(), maxHeight: config.contentMaxHeight, collapsedClassName: "collapsed", } }; if (moreLess.target.height > moreLess.target.maxHeight) { // update button text value moreLess.button.el.text(moreLess.button.collapsed_text); moreLess.target.el // add css class to apply some styling .addClass(moreLess.target.collapsedClassName) // append link to product description .parent().append(moreLess.button.el); } moreLess.button.el.on("click", function (e) { e.preventDefault(); if (moreLess.target.el.hasClass(moreLess.target.collapsedClassName)) { moreLess.target.el.removeClass(moreLess.target.collapsedClassName); moreLess.button.el.text(moreLess.button.expanded_text); } else { moreLess.target.el.addClass(moreLess.target.collapsedClassName); moreLess.button.el.text(moreLess.button.collapsed_text); } }); } }); |
This is an optional file for you to create, I have created some minimal styling (transparent-to-solid background) as a nice effect on the more/less button.
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.product.attribute.description .value{ max-height: none; position: relative; max-height: none; border-bottom: 1px solid #d1d1d1; &.collapsed { max-height: 200px; overflow: hidden; &:after { content: ""; position: absolute; width: 100%; height: 160px; z-index: 1; display: block; bottom: 0; background: -moz-linear-gradient(top, rgba(255,255,255,0) 0%, rgba(255,255,255,1) 70%, rgba(255,255,255,1) 100%); /* FF3.6-15 */ background: -webkit-linear-gradient(top, rgba(255,255,255,0) 0%,rgba(255,255,255,1) 70%,rgba(255,255,255,1) 100%); /* Chrome10-25,Safari5.1-6 */ background: linear-gradient(to bottom, rgba(255,255,255,0) 0%,rgba(255,255,255,1) 70%,rgba(255,255,255,1) 100%); /* W3C, IE10+, FF16+, Chrome26+, Opera12+, Safari7+ */ filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#00ffffff', endColorstr='#ffffff',GradientType=0 ); /* IE6-9 */ } } } #toggle-description { margin-top: 20px; display: inline-block; } |
Here is how it looks like on the frontend:
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