Length of category descripton/Show more

[Camillio]

I have an online store on PrestaShop 1.6. How can I make the category description not appear in full? I would like there to be a "Show more" button after 700 characters.  Below is the code of my category.tpl

{*
* 2007-2013 PrestaShop
*
* NOTICE OF LICENSE
*
* This source file is subject to the Academic Free License (AFL 3.0)
* that is bundled with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://opensource.org/licenses/afl-3.0.php
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@prestashop.com so we can send you a copy immediately.
*
* DISCLAIMER
*
* Do not edit or add to this file if you wish to upgrade PrestaShop to newer
* versions in the future. If you wish to customize PrestaShop for your
* needs please refer to http://www.prestashop.com for more information.
*
*  @author PrestaShop SA <contact@prestashop.com>
*  @copyright  2007-2013 PrestaShop SA
*  @license    http://opensource.org/licenses/afl-3.0.php  Academic Free License (AFL 3.0)
*  International Registered Trademark & Property of PrestaShop SA
*}
{include file="$tpl_dir./errors.tpl"}

{if isset($category)}
	{if $category->id AND $category->active}						
		
        		
       <h1 class="page-heading{if (isset($subcategories) && !$products) || (isset($subcategories) && $products) || !isset($subcategories) && $products} product-listing{/if}"><span class="cat-name">{$category->name|escape:'html':'UTF-8'}{if isset($categoryNameComplement)}&nbsp;{$categoryNameComplement|escape:'html':'UTF-8'}{/if}</span></h1>
       
  {if !empty($category->description)}
        <div id="category-description" class="rte">{$category->description}</div>
      {/if}
       
		{if $products}
		<div class="filters-panel">
			<div class="row">
				<div class="col-md-4 col-lg-4 hidden-sm hidden-xs view-mode">
					<a class="view-grid active" href="#"><span class="fa fa-th"></span><label>{l s='Grid'}&nbsp;</label></a><a class="view-list" href="#"><span class="fa fa-list"></span><label>{l s='List'}</label></a>
				</div>
				<div class="col-sm-6 col-md-4 col-lg-4 compare-box">
					{include file="./product-compare.tpl"}
				</div>
				<div class="col-sm-6 col-md-4 col-lg-4 product-sort">
					{include file="./product-sort.tpl"}				
				</div>	
			</div>
		</div>
		{include file="./product-list.tpl" products=$products}
		<div class="filters-panel-bottom">
			<div class="row">
				{include file="./pagination.tpl"}
			</div>	
		</div>
		{/if}
	{elseif $category->id}
		<div class="alert alert-warning"><button data-dismiss="alert" type="button" class="close">X</button>{l s='This category is currently unavailable.'}</div>
	{/if}
{/if}

 

how to set the length of the category description?

[JBW]

You can shorten the text by using smarty truncate modifier

https://www.smarty.net/docsv2/en/language.modifier.truncate.tpl

But this won't display a "Show more" option, you need some script for this. Maybe you want to try my module Expandable descriptions (https://addons.prestashop.com/en/product.php?id_product=49795) - it can shorten all kind of descriptions, category, product short & long description etc.