Try to Override Checkout cart total block \Magento\Checkout\Block\Cart\Totals#L11 but is not override.Getting the error:
Recoverable Error: Argument 4 passed to Magento\Checkout\Block\Cart\Totals::__construct() must be an instance of Magento\Sales\Model\Config, array given, called in /var/www/html/indiakalav1/app/code/BlueHorse/OverRide/Block/Cart/Totals.php on line 16 and defined in /var/www/html/indiakalav1/vendor/magento/module-checkout/Block/Cart/Totals.php on line 51
#0 /var/www/html/indiakalav1/vendor/magento/module-checkout/Block/Cart/Totals.php(51): Magento\Framework\App\ErrorHandler->handler(4096, 'Argument 4 pass...', '/var/www/html/i...', 51, Array)
#1 /var/www/html/indiakalav1/app/code/BlueHorse/OverRide/Block/Cart/Totals.php(16): Magento\Checkout\Block\Cart\Totals->__construct(Object(Magento\Framework\View\Element\Template\Context), Object(Magento\Customer\Model\Session), Object(Magento\Checkout\Model\Session), Array)
BLuehorse\OverRide\Block\Cart\Totals.php:
<?php
namespace BlueHorse\OverRide\Block\Cart;
use Magento\Framework\View\Element\BlockInterface;
use Magento\Checkout\Block\Checkout\LayoutProcessorInterface;
class Totals extends \Magento\Checkout\Block\Cart\Totals
{
public function __construct(
\Magento\Framework\View\Element\Template\Context $context,
\Magento\Customer\Model\Session $customerSession,
\Magento\Checkout\Model\Session $checkoutSession,
\Magento\Sales\Model\Config $salesConfig,
array $layoutProcessors = [],
array $data = []
) {
$this->_salesConfig = $salesConfig;
parent::__construct($context, $customerSession, $checkoutSession, $data);
$this->_isScopePrivate = true;
$this->layoutProcessors = $layoutProcessors;
}
}
di.xml:
<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
<preference for="Magento\Checkout\Block\Cart\Totals" type="BlueHorse\OverRide\Block\Cart\Totals" />
</config>
module.xml
<?xml version="1.0"?>
<!--
/**
* @copyright Copyright (c) 2015 X.commerce, Inc. (http://www.magentocommerce.com)
*/
-->
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../../../../../lib/internal/Magento/Framework/Module/etc/module.xsd">
<module name="BlueHorse_OverRide" setup_version="2.0.0"/>
</config>
And registration.php
<?php
\Magento\Framework\Component\ComponentRegistrar::register(
\Magento\Framework\Component\ComponentRegistrar::MODULE,
'BlueHorse_OverRide',
__DIR__
);
composer.json
{
"name": "bluehorse/module-override",
"description": "N/A",
"require": {
"php": "~5.5.0|~5.6.0|~7.0.0"
},
"type": "magento2-module",
"version": "100.0.2",
"license": [
"OSL-3.0",
"AFL-3.0"
],
"autoload": {
"files": [
"registration.php"
],
"psr-4": {
"BlueHorse\\OverRide\\": ""
}
}
}
and checkout_cart_index.xml
<?xml version="1.0"?>
<!--
/**
* Copyright © 2015 Magento. All rights reserved.
* See COPYING.txt for license details.
*/
-->
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" layout="1column" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
<update handle="checkout_cart_item_renderers"/>
<update handle="checkout_shipping_price_renderer"/>
<body>
<referenceContainer name="page.messages">
<block class="Magento\Checkout\Block\Cart\ValidationMessages" name="checkout.cart.validationmessages"/>
</referenceContainer>
<referenceContainer name="content">
<block class="Magento\Checkout\Block\Cart" name="checkout.cart" template="cart.phtml" cacheable="false">
<container name="checkout.cart.items" as="with-items">
<container name="checkout.cart.form.before" as="form_before" label="Shopping Cart Items Before" htmlTag="div" htmlClass="rewards" before="checkout.cart.form"/>
<block class="Magento\Checkout\Block\Cart" name="checkout.cart.form" as="cart-items" template="cart/form.phtml">
<block class="Magento\Framework\View\Element\RendererList" name="checkout.cart.item.renderers" as="renderer.list"/>
<block class="Magento\Framework\View\Element\Text\ListText" name="checkout.cart.order.actions"/>
</block>
<container name="checkout.cart.widget" as="checkout_cart_widget" label="Shopping Cart Items After"/>
<!--
<block class="Magento\Checkout\Block\Cart\Coupon" name="checkout.cart.coupon" as="coupon" template="cart/coupon.phtml"/>
-->
<container name="checkout.cart.totals.container" as="totals" label="Shopping Cart Totals" after="checkout.cart.form" >
<block class="Magento\Checkout\Block\Cart\Totals" name="checkout.cart.totals" template="cart/totals.phtml">
<arguments>
<argument name="jsLayout" xsi:type="array">
<item name="components" xsi:type="array">
<item name="block-totals" xsi:type="array">
<item name="component" xsi:type="string">Magento_Checkout/js/view/cart/totals</item>
<item name="displayArea" xsi:type="string">totals</item>
<item name="config" xsi:type="array">
<item name="template" xsi:type="string">Magento_Checkout/cart/totals</item>
</item>
<item name="children" xsi:type="array">
<!-- sort order for this totals is configured on admin panel-->
<!-- Stores->Configuration->SALES->Sales->General->Checkout Totals Sort Order -->
<item name="subtotal" xsi:type="array">
<item name="component" xsi:type="string">Magento_Checkout/js/view/summary/subtotal</item>
<item name="config" xsi:type="array">
<item name="title" xsi:type="string" translate="true">Subtotal</item>
<item name="template" xsi:type="string">Magento_Checkout/cart/totals/subtotal</item>
</item>
</item>
<item name="shipping" xsi:type="array">
<item name="component" xsi:type="string">Magento_Checkout/js/view/cart/totals/shipping</item>
<item name="config" xsi:type="array">
<item name="title" xsi:type="string" translate="true">Shipping</item>
<item name="template" xsi:type="string">Magento_Checkout/cart/totals/shipping</item>
</item>
</item>
<item name="grand-total" xsi:type="array">
<item name="component" xsi:type="string">Magento_Checkout/js/view/summary/grand-total</item>
<item name="config" xsi:type="array">
<item name="title" xsi:type="string" translate="true">Order Total</item>
<item name="template" xsi:type="string">Magento_Checkout/cart/totals/grand-total</item>
</item>
</item>
</item>
</item>
</item>
</argument>
</arguments>
<block class="Magento\Checkout\Block\Onepage\Link" name="checkout.cart.methods.onepage.bottom" template="cart/onepage-link.phtml" />
</block>
</container>
<!--
<block class="Magento\Checkout\Block\Cart" name="checkout.cart.methods.bottom" template="cart/methods.phtml">
<container name="checkout.cart.methods" as="methods" label="Payment Methods After Checkout Button">
<block class="Magento\Checkout\Block\Onepage\Link" name="checkout.cart.methods.onepage.bottom" template="onepage/link.phtml" />
<block class="Magento\Checkout\Block\QuoteShortcutButtons" name="checkout.cart.shortcut.buttons" />
</container>
</block>
<block class="Magento\Checkout\Block\Cart\Crosssell" name="checkout.cart.crosssell" template="Magento_Catalog::product/list/items.phtml" after="-">
<arguments>
<argument name="type" xsi:type="string">crosssell</argument>
</arguments>
</block>
-->
</container>
<container name="checkout.cart.noitems" as="no-items">
<block class="Magento\Checkout\Block\Cart" name="checkout.cart.empty" before="-" template="cart/noItems.phtml"/>
<container name="checkout.cart.empty.widget" as="checkout_cart_empty_widget" label="Empty Shopping Cart Content Before"/>
</container>
</block>
</referenceContainer>
<block class="Magento\Checkout\Block\Cart\Additional\Info" name="additional.product.info" template="cart/additional/info.phtml"/>
</body>
</page>
Best Answer
As your new block extends
\Magento\Checkout\Block\Cart\TotalsI reckon you need to call theparent::__constructmethod with the original block method parameters and update your constructor like this: