Does any theme support child theme?

Question

I'm trying to add some new functionalities to a theme and I'm using Child Theme as should be. So the theme is called u-design and I created a folder called u-design-child. Inside the folder I've created two files: style.css and functions.php. This is the content for each one so far:

// style.css
/*
Theme Name: U-Design Child
Theme URI: http://localhost
Description: Child theme for U-Design.
Author: Reynier
Author URI: http://localhost
Version: 1
License: Located in 'licensing' folder
License URI: Located in 'licensing' folder
*/

// functions.php 
<?php
// Add Shortcode for Random Phrases
function random_phrase()
{
    $args = array(
        'post_type'      => 'frase',
        'posts_per_page' => 1,
        'orderby'        => 'rand'
    );

    $query = new WP_Query($args);

    // Build output string
    $quo = '';
    $quo .= $query->post->post_title;
    $quo .= ' said "';
    $quo .= $query->post->post_content;
    $quo .= '"';

    return $quo;
}

add_shortcode('phrase', 'random_phrase');

But when I go to Appearance > Themes and try to enable the child theme I see this:

The following themes are installed but incomplete. Themes must have a stylesheet and a template.

What I've missed here? Any advice?

Answer 1

You are missing the Template: definition in your stylesheet header. This is the folder name of the parent theme

For instance, a child theme of the bundled theme will have the Template: defined as

Template: twentyfifteen