How to override template with block class in Magento 2.2.1

Question

I want to override product main page title of product view page with block class.

So I use referenceBlock page.main.title with class like this

<referenceBlock class="Magento\Catalog\Block\Product\View" name="page.main.title" template="Vendor_Module::html/title.phtml"/>

But Magento 2.2.1 shows error like this: not allow attrbute class with referenceBlock

So how can i achieve this in Magento 2.2.1?

Answer 1

I found the solution

I just keep same name of block ad change both class and template.

Code:

<block class="Vendor\Module\Block\Product\View" name="page.main.title" template="Vendor_Module::html/title.phtml" before="product.info.main"/>

Answer 2

Use this :

<referenceBlock name="page.main.title">
    <action method="setTemplate">
        <argument name="template" xsi:type="string">Vendor_Module::html/title.phtml</argument>
    </action>
</referenceBlock>

To override class using di.xml :

<preference for="Magento\Catalog\Block\Product\View" type="Vendor\ModuleName\Block\Product\View" />

Hope it Helps!

Answer 3

Use this:

<referenceBlock name="page.main.title">
    <block class="Magento\Catalog\Block\Product\View" name="abc" template="Vendor_Module::html/title.phtml"/>
</referenceBlock>

Answer 4

As the error clearly says, you cannot use class attribute within referenceBlock tag. You are referencing the name of the existing block with already defined class.
So just lose class='....' part and it will work, like so

<referenceBlock name="page.main.title" template="Vendor_Module::html/title.phtml" />

Also, i couldnt make it work with passing template as argument.

Best of luck