Bouton Suivant/Précedent sur la page produit | Astuce Prestashop 1.6

Voici un petit tutoriel si vous désirez ajouter un bouton suivant/précedent sur la page produit

Cette astuce Prestashop est valable pour la version 1.5 et 1.6

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1) Créez un nouveau fichier qui se nommera Product.php dans override/classes et insérez le code suivant :

<?php
class Product extends ProductCore
{
	public function getAdjacentProducts()
	{
		//get the current position in the product's default category
		$position  = Db::getInstance()->getValue('SELECT position FROM '._DB_PREFIX_.'category_product WHERE id_product = ' . (int)$this->id . ' AND id_category = ' . (int)$this->id_category_default);

		// var_dump($position);
		// get products that are before and after
		
		$previous = Db::getInstance(_PS_USE_SQL_SLAVE_)->getRow('
			SELECT cp.id_product, pl.link_rewrite, cp.position, pl.name
			FROM '._DB_PREFIX_.'category_product cp
			LEFT JOIN '._DB_PREFIX_.'product_lang pl ON (cp.id_product = pl.id_product)
			LEFT JOIN '._DB_PREFIX_.'product p ON (cp.id_product = p.id_product)
			WHERE p.id_category_default = '.(int)$this->id_category_default.' AND (cp.position < '. (int)($position ) .' ) AND cp.id_category = ' . (int)$this->id_category_default .' AND pl.id_lang = '.(Context::getContext()->language->id).'
			ORDER BY cp.position DESC');

		$next = Db::getInstance(_PS_USE_SQL_SLAVE_)->getRow('
			SELECT cp.id_product, pl.link_rewrite, cp.position, pl.name
			FROM '._DB_PREFIX_.'category_product cp
			LEFT JOIN '._DB_PREFIX_.'product_lang pl ON (cp.id_product = pl.id_product)
			LEFT JOIN '._DB_PREFIX_.'product p ON (cp.id_product = p.id_product)
			WHERE p.id_category_default = '.(int)$this->id_category_default.' AND (cp.position > '. (int)($position ) .' ) AND cp.id_category = ' . (int)$this->id_category_default .' AND pl.id_lang = '.(Context::getContext()->language->id).'
			ORDER BY cp.position ASC');

		return array('previous' => $previous, 'next' => $next);
	}
}

<?php

class Product extends ProductCore

{

public function getAdjacentProducts()

{

//get the current position in the product's default category

$position = Db::getInstance()->getValue('SELECT position FROM '._DB_PREFIX_.'category_product WHERE id_product = ' . (int)$this->id . ' AND id_category = ' . (int)$this->id_category_default);

// var_dump($position);

// get products that are before and after

$previous = Db::getInstance(_PS_USE_SQL_SLAVE_)->getRow('

SELECT cp.id_product, pl.link_rewrite, cp.position, pl.name

FROM '._DB_PREFIX_.'category_product cp

LEFT JOIN '._DB_PREFIX_.'product_lang pl ON (cp.id_product = pl.id_product)

LEFT JOIN '._DB_PREFIX_.'product p ON (cp.id_product = p.id_product)

WHERE p.id_category_default = '.(int)$this->id_category_default.' AND (cp.position < '. (int)($position ) .' ) AND cp.id_category = ' . (int)$this->id_category_default .' AND pl.id_lang = '.(Context::getContext()->language->id).'

ORDER BY cp.position DESC');

$next = Db::getInstance(_PS_USE_SQL_SLAVE_)->getRow('

SELECT cp.id_product, pl.link_rewrite, cp.position, pl.name

FROM '._DB_PREFIX_.'category_product cp

LEFT JOIN '._DB_PREFIX_.'product_lang pl ON (cp.id_product = pl.id_product)

LEFT JOIN '._DB_PREFIX_.'product p ON (cp.id_product = p.id_product)

WHERE p.id_category_default = '.(int)$this->id_category_default.' AND (cp.position > '. (int)($position ) .' ) AND cp.id_category = ' . (int)$this->id_category_default .' AND pl.id_lang = '.(Context::getContext()->language->id).'

ORDER BY cp.position ASC');

return array('previous' => $previous, 'next' => $next);

}

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2) Créez un nouveau fichier qui se nommera ProductController.php dans override/controllers/front et insérez le code suivant :

<?php

Class ProductController extends ProductControllerCore
{

	public function initContent()
	{


		$adjacent_products = $this->product->getAdjacentProducts();

		$this->context->smarty->assign(array(
			'prev_product'=> $adjacent_products['previous'],
			'next_product'=> $adjacent_products['next']
		));

		parent::initContent();
	}	
}

<?php

Class ProductController extends ProductControllerCore

{

public function initContent()

{

$adjacent_products = $this->product->getAdjacentProducts();

$this->context->smarty->assign(array(

'prev_product'=> $adjacent_products['previous'],

'next_product'=> $adjacent_products['next']

));

parent::initContent();

}

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3) Maintenant on va ajouter le boutton sur la page produit. Pour cela, ouvrez le fichier product.tpl qui se situe dans votre thème et insérez le code suivant

<div class="product-navigation clearfix" style="margin-bottom:20px">
	{if $prev_product}
		<a title="{$prev_product.name}" class="btn btn-default" href="{$link->getProductLink($prev_product.id_product, $prev_product.link_rewrite)}">{l s='Previous Product'}</a>
	{/if}
	{if $next_product}
		<a title="{$next_product.name}" class="btn btn-default" style="float:right"href="{$link->getProductLink($next_product.id_product, $next_product.link_rewrite)}">{l s='Next Product'}</a>
	{/if}
</div>

{if $prev_product}

<a title="{$prev_product.name}" class="btn btn-default" href="{$link->getProductLink($prev_product.id_product, $prev_product.link_rewrite)}">{l s='Previous Product'}</a>

{/if}

{if $next_product}

<a title="{$next_product.name}" class="btn btn-default" style="float:right"href="{$link->getProductLink($next_product.id_product, $next_product.link_rewrite)}">{l s='Next Product'}</a>

{/if}

</div>

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