Custom shortcode displaying a loop of WooCommerce product variations - php

Question

Im trying to make a custom shortcode in order to display some product variations that have no stock quantity with stock <= 0.
Here's what I did so far:
if( ! function_exists('preorable_products') ) {
// Add Shortcode
function preorable_products( $atts ) {
global $woocommerce_loop;
// Attributes
$atts = shortcode_atts(
array(
'columns' => '4',
'limit' => '20',
'preordable' => "yes",
'stock' => 0,
),
$atts, 'preorable_products'
);
$woocommerce_loop['columns'] = $atts['columns'];
// The WP_Query
$products_variation = new WP_Query( array (
'post_type' => 'product_variation',
'post_status' => 'publish',
'fields' => 'id=>parent',
'posts_per_page' => $atts['limit'],
'meta_query' => array(
'relation' => 'AND',
'preordable' => array(
'key' =>'_ab_preorder_checkbox',
'value' => "yes",
'compare' => '=='
),
'stock' => array(
'key' =>'_stock',
'value' => 0,
'compare' => '<='
),
)
));
$products = $products_variation;
ob_start();
if ( $products->have_posts() ) { ?>
<?php woocommerce_product_loop_start(); ?>
<?php while ( $products->have_posts() ) : $products->the_post(); ?>
<?php wc_get_template_part( 'content', 'product' ); ?>
<?php endwhile; // end of the loop. ?>
<?php woocommerce_product_loop_end(); ?>
<?php
} else {
do_action( "woocommerce_shortcode_products_loop_no_results", $atts );
echo "<p>Aucun article disponible à la précommande.</p>";
}
woocommerce_reset_loop();
wp_reset_postdata();
return '<div class="woocommerce columns-' . $atts['columns'] . '">' . ob_get_clean() . '</div>';
}
add_shortcode( 'preorable_products', 'preorable_products' );
}
The WP Query part seems to work perfectly, but the code part to display the product seems wrong. I feel like $product variable doesn't have have_post method :
if ( $products->have_posts() ) { ?>
<?php woocommerce_product_loop_start(); ?>
<?php while ( $products->have_posts() ) : $products->the_post(); ?>
<?php wc_get_template_part( 'content', 'product' ); ?>
<?php endwhile; // end of the loop. ?>
<?php woocommerce_product_loop_end(); ?>
<?php
} else {
do_action( "woocommerce_shortcode_products_loop_no_results", $atts );
echo "<p>Aucun article disponible à la précommande.</p>";
}
woocommerce_reset_loop();
wp_reset_postdata();
return '<div class="woocommerce columns-' . $atts['columns'] . '">' . ob_get_clean() . '</div>';
Any help is welcome.

Answer 1

There are some errors and missing things in your code, use instead the following revisited code:
if( ! function_exists('get_preordable_products') ) {
function get_preordable_products( $atts ) {
// Shortcode Attributes
extract( shortcode_atts( array(
'columns' => '4',
'limit' => '20',
'preordable' => "yes",
'stock' => 0,
), $atts, 'preordable_products' ) );
// The WP_Query
$query = new WP_Query( array (
'post_type' => 'product_variation',
'post_status' => 'publish',
'posts_per_page' => $limit,
'meta_query' => array(
'relation' => 'AND',
'preordable' => array(
'key' =>'_ab_preorder_checkbox',
'value' => "yes",
'compare' => '=='
),
array(
'key' =>'_stock',
'value' => 0,
'compare' => '<='
),
)
) );
global $woocommerce_loop;
$woocommerce_loop['columns'] = $columns;
$woocommerce_loop['is_shortcode'] = 1;
$woocommerce_loop['name'] = 'preordable_products';
$woocommerce_loop['total'] = $query->post_count;
$woocommerce_loop['total_pages'] = $query->max_num_pages;
$woocommerce_loop['per_page'] = $limit;
ob_start();
if ( $query->have_posts() ) {
woocommerce_product_loop_start();
while ( $query->have_posts() ) {
$query->the_post();
wc_get_template_part( 'content', 'product' );
}
woocommerce_product_loop_end();
woocommerce_reset_loop();
wp_reset_postdata();
} else {
do_action( "woocommerce_shortcode_products_loop_no_results", $atts );
echo '<p>'. __("Aucun article disponible à la précommande.") . '</p>';
}
$content = ob_get_clean();
return '<div class="woocommerce columns-' . $columns . '">' . $content . '</div>';
}
add_shortcode( 'preordable_products', 'get_preordable_products' );
}
Code goes in functions.php file of the active child theme (or active theme). Tested and works.
Usage: [preordable_products] or in Php code echo do_shortcode('[preordable_products]');