In my custom theme i do not use discount form. In cart, I removed via xml and it works. But in checkout I can't remove it via xml.
How i can remove discount form in onepage checkout?
To disable the component in your checkout_index_index.xml
, we can use the following instructions:
<item name="%the_component_to_be_disabled%" xsi:type="array">
<item name="config" xsi:type="array">
<item name="componentDisabled" xsi:type="boolean">true</item>
</item>
</item>
Read more: http://devdocs.magento.com/guides/v2.0/howdoi/checkout/checkout_customize.html#disable-a-component
app/code/Vendor/Checkout/view/layout/checkout_index_index.xml
<?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>
<referenceBlock name="checkout.root">
<arguments>
<argument name="jsLayout" xsi:type="array">
<item name="components" xsi:type="array">
<item name="checkout" xsi:type="array">
<item name="children" xsi:type="array">
<item name="steps" xsi:type="array">
<item name="children" xsi:type="array">
<item name="billing-step" xsi:type="array">
<item name="component" xsi:type="string">uiComponent</item>
<item name="children" xsi:type="array">
<item name="payment" xsi:type="array">
<item name="children" xsi:type="array">
<item name="afterMethods" xsi:type="array">
<item name="children" xsi:type="array">
<!--Disable Discount here-->
<item name="discount" xsi:type="array">
<item name="config" xsi:type="array">
<item name="componentDisabled" xsi:type="boolean">true</item>
</item>
</item>
</item>
</item>
</item>
</item>
</item>
</item>
</item>
</item>
</item>
</item>
</item>
</argument>
</arguments>
</referenceBlock>
</body>
</page>
We can remove a component from layout rendering via Plugin also.
Remove the Apply Coupon Code Field at the checkout & cart page in Magento 2.3
step 1 : Remove from checkout/cart demo => http://abc/checkout/cart/ GO with your child theme file path
app/design/frontend/Smartwave/porto_child/Magento_Theme/layout/default.xml
simply write below line
<referenceBlock name="checkout.cart.coupon" remove="true"/>
or else go with another below path :
app/design/frontend/Smartwave/porto_child/Magento_Checkout/layout/checkout_cart_index.xml
simply write same line
<referenceBlock name="checkout.cart.coupon" remove="true"/>
step 2 : Remove from checkout/payment => http://abc/checkout/#payment
copy this file from your vendor/magento/module-salesrule/view/frontend/layout/checkout_index_index.xml
Overwrite above vendor file to your child theme :
app/design/frontend/Smartwave/porto_child/Magento_SalesRule/layout/checkout_index_index.xml
find this code (line no approx :24) in your file.
<item name="discount" xsi:type="array">
Now removed item discount by below code. You need to simply put this lines
<item name="config" xsi:type="array">
<item name="componentDisabled" xsi:type="boolean">true</item>
</item>
done...