Parent to child theme- Wordpress - wordpress

Question

I have already started working on a wordpress theme and need to make it a child theme to prevent updates from changing my site and customisation.
Is there any wat that I could do this?

Answer 1

You just need to follow these 3 steps:
1) Create a folder for your theme in /wp-content/themes/:
"It is recommended (though not required, especially if you're creating a theme for public use) that the name of your child theme directory is appended with '-child'.".
Every file you create here will overwrite files in your parent theme. You can, for instance, create new Page templates: https://developer.wordpress.org/themes/template-files-section/page-template-files/ or overwrite the existing ones.
2) Create am a style.css file and begin it with:
/*
Theme Name: Twenty Fifteen Child
Theme URI: http://example.com/twenty-fifteen-child/
Description: Twenty Fifteen Child Theme
Author: John Doe
Author URI: http://example.com
Template: twentyfifteen
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Tags: light, dark, two-columns, right-sidebar, responsive-layout, accessibility-ready
Text Domain: twenty-fifteen-child
*/
Add here your custom styles. More info: https://codex.wordpress.org/Theme_Development#Theme_Stylesheet
3) Create a functions.php
Inside this file, you can add new functionality your child theme or modify the existing one.
You will also have to enqueue here the CSS and JS of your parent theme, as well as the new CSS and JS that you create on your child theme. Something like that will do the most of the times:
<?php
function my_theme_enqueue_styles() {
$parent_style = 'parent-style'; // This is 'twentyfifteen-style' for the Twenty Fifteen theme.
wp_enqueue_style( $parent_style, get_template_directory_uri() . '/style.css' );
wp_enqueue_style( 'child-style',
get_stylesheet_directory_uri() . '/style.css',
array( $parent_style ),
wp_get_theme()->get('Version')
);
}
add_action( 'wp_enqueue_scripts', 'my_theme_enqueue_styles' );
?>
Now you can add custom shortcodes (https://codex.wordpress.org/Shortcode_API) , widgets areas (https://codex.wordpress.org/Widgetizing_Themes), etc..
More documentation about child themes: https://codex.wordpress.org/Child_Themes