Moving Portfolio Module To Child Theme | Elegant Themes Help Center

These changes require a Divi child theme. Please check the following article if you have not set a child theme yet: https://intercom.help/elegantthemes/faq-s-and-troubleshooting/how-to-make-a-child-theme

In the child theme folder create a new folder, for example includes folder.
Now copy the Divi/includes/builder/module/Portfolio.php file into the child-theme/includes/ folder.
Rename the file to something else, for example: custom-Portfolio.php
Open up the custom-Portfolio.php file and replace this code (the first line):

class ET_Builder_Module_Portfolio extends ET_Builder_Module_Type_PostBased {

with:

class custom_ET_Builder_Module_Portfolio extends ET_Builder_Module_Type_PostBased {

Also, replace this line:

$this->vb_support = 'on';

with:

$this->vb_support = 'off';

6. Next, open up functions.php file in your child theme folder and add the following code at the very bottom:

function custom_portfolio_setup() {
	get_template_part( 'includes/custom-Portfolio' );
	$custom_portfolio = new custom_ET_Builder_Module_Portfolio();
	remove_shortcode( 'et_pb_portfolio' );
	add_shortcode( 'et_pb_portfolio', array( $custom_portfolio, '_render' ) );
}
add_action( 'et_builder_ready', 'custom_portfolio_setup' );

function divi_custom_portfolio_class( $classlist ) {
    $classlist['et_pb_portfolio']['classname'] = 'custom_ET_Builder_Module_Portfolio';
    return $classlist;
}
add_filter( 'et_module_classes', 'divi_custom_portfolio_class' );

Now you are ready to customize the Portfolio module the way you need and keep the changes while updating/reinstalling the parent Divi theme.