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I've a custom phtml file where I;ve added the below code and still cart shows empty.
<?php echo $this->getLayout()
->createBlock('Magento\Checkout\Block\Cart\Sidebar')
->setTemplate('Magento_Checkout::cart/minicart.phtml')
->toHtml(); ?>
</li>
Well , first of all, its not best practice to render blocks like that. The correct way is to add the blocks on the layout xmls like default.xml.
For the problem you have, if you look in the layout file where it is getting declared /vendor/magento/module-checkout/view/frontend/layout/default.xml you will see:
<referenceContainer name="header-wrapper">
<block class="Magento\Checkout\Block\Cart\Sidebar" name="minicart" as="minicart" after="logo" template="Magento_Checkout::cart/minicart.phtml">
<arguments>
<argument name="jsLayout" xsi:type="array">
<item name="types" xsi:type="array"/>
<item name="components" xsi:type="array">
<item name="minicart_content" xsi:type="array">
<item name="component" xsi:type="string">Magento_Checkout/js/view/minicart</item>
<item name="config" xsi:type="array">
<item name="template" xsi:type="string">Magento_Checkout/minicart/content</item>
</item>
<item name="children" xsi:type="array">
<item name="subtotal.container" xsi:type="array">
<item name="component" xsi:type="string">uiComponent</item>
<item name="config" xsi:type="array">
<item name="displayArea" xsi:type="string">subtotalContainer</item>
</item>
<item name="children" xsi:type="array">
<item name="subtotal" xsi:type="array">
<item name="component" xsi:type="string">uiComponent</item>
<item name="config" xsi:type="array">
<item name="template" xsi:type="string">Magento_Checkout/minicart/subtotal</item>
</item>
</item>
</item>
</item>
<item name="extra_info" xsi:type="array">
<item name="component" xsi:type="string">uiComponent</item>
<item name="config" xsi:type="array">
<item name="displayArea" xsi:type="string">extraInfo</item>
</item>
</item>
<item name="promotion" xsi:type="array">
<item name="component" xsi:type="string">uiComponent</item>
<item name="config" xsi:type="array">
<item name="displayArea" xsi:type="string">promotion</item>
</item>
</item>
</item>
</item>
</item>
</argument>
</arguments>
<container name="minicart.addons" label="Mini-cart promotion block"/>
</block>
</referenceContainer>
As you can see it has many arguments which needs to be included which you are not. Move the already available or create the same with different name and render it on a block you like.
<move element="name.of.an.element" destination="name.of.destination.element" as="new_alias" after="name.of.element.after" before="name.of.element.before"/> and move your element which is the name of the minicart block and the destination is in which block you want to show it. After that inside block you can echo the block with $block->getChildHtml('{block alias}')
Oct 14, 2021 at 14:06
jsLayout and the children. If you want to do it with the way you mentioned in the question you have to create an array with all the name values of the arguments and pass it as <?php echo $this->getLayout() ->createBlock('Magento\Checkout\Block\Cart\Sidebar') ->setTemplate('Magento_Checkout::cart/minicart.phtml') ->setData('jsLayout',{$array}) ->toHtml(); ?> </li>
Oct 18, 2021 at 9:46