WooCommerce - Change number of related products on product page

gistfile1.php

<?php
/**
 * WooCommerce Extra Feature
 * --------------------------
 *
 * Change number of related products on product page
 * Set your own value for 'posts_per_page'
 *
 */ 
function woo_related_products_limit() {
  global $product;
	
	$args['posts_per_page'] = 6;
	return $args;
}
add_filter( 'woocommerce_output_related_products_args', 'jk_related_products_args' );
  function jk_related_products_args( $args ) {

	$args['posts_per_page'] = 4; // 4 related products
	$args['columns'] = 2; // arranged in 2 columns
	return $args;
}

there is no $related or $orderby vars defined in the function so this function will lead to getting the same products every time.

Does not seem to work anymore.. Empty related products if this is added.

It works, I've just added it to my theme functions file.
But how can I set the number per rows, because there are 2 per line by default. First one gets "first" CSS class and second "last" CSS class

Help,
Yes the function works but, I agree, it will show the absolute same related products regardless of the main product.
how can we change the code so that I can get three related products in a row and all are different always?

Same problem here. Always the same related products at every product.

I will going to use this code instead:

// Redefine woocommerce_output_related_products()
function woocommerce_output_related_products() {
woocommerce_related_products(4,4);
}

Agreed, the above isn't working as intended.

Thanks, beamkiller, for the fix!

I found the fix mentioned by beamkiller on a couple other sites, but they describe it wrong. They state (4,2) should be 4 products and 2 rows, but it is 4 products and 2 columns (or 2 per row). This led to a bit of frustration on my part, since I wasn't seeing much of a change until I saw in the code the 'first' and 'last' classes being added to the li elements.

woocommerce_related_products function is now deprecated.

@iangster You need to use the woocommerce_output_related_products_args filter

here is the answer
// Redefine woocommerce_output_related_products()
function woocommerce_output_related_products() {
woocommerce_related_products(4,2); // Display 4 products in rows of 2
}

A better way:

add_filter( 'woocommerce_output_related_products_args', 'jk_related_products_args' );
function jk_related_products_args( $args ) {
$args['posts_per_page']     = 4; // 4 related products
$args['columns']            = 2; // arranged in columns

return $args;
}

I can´t seem to make this work. The "posts_per_page" part works, I can control how many related items show up. The "columns" part doesn't work, the related products layout is always in two columns. Any suggestions?

This solution doesn't work for me as well...

This does not change the number of columns, just the number of posts. Does anyone have a better solution?

This works. You then have to adjust the size of the image in css so they all fit on the line.

Add this to your custom css section of jetpack or your child theme css.

.woocommerce .related ul li.product, .woocommerce .related ul.products li.product, .woocommerce .upsells.products ul li.product, .woocommerce .upsells.products ul.products li.product, .woocommerce-page .related ul li.product, .woocommerce-page .related ul.products li.product, .woocommerce-page .upsells.products ul li.product, .woocommerce-page .upsells.products ul.products li.product {
width: 22% !important;
}

Yes, this code actually works. It adds correct classes which are .first and .last to the list. You have to change the width of element by yourself. For example, if you set 3 columns, the width should be 30.8%.

Yes the number of elements change, but the number of columns don't. We can control that by CSS though.

Like For 4 Columns:

.woocommerce .related ul li.product {
width: 22% !important;
clear: none;
margin-right: 4%;
}
.woocommerce .related ul li.product:nth-of-type(4n) {
margin-right: 0;
}

This code shows always the same products. Any suggestion how to fix it?

It doesn't make any sense to mess up with styles while there's argument "columns" that should do the job. It just doesn't work, that's all.

Here's a quick and dirty way to get more products on related products:

1. Make these directories in your child theme:

/woocommerce/single-product

(* if you are new to child themes read dooumentation here: https://codex.wordpress.org/Child_Themes)

2. Copy the file related.php from this directory:

/wp-content/plugins/woocommerce/templates/single-product

and Paste it into the directory you made in step 1

3. In the new related.php in your child theme open the file and change this line:
   'posts_per_page' => $posts_per_page //change this var to how many related products appears.

eg. 'post_per_page' => 6;

Hope this works for you guys.

Thanks issac! Works!

the easiest and best way I found was by using a plugin called Woocommerce booster!, it works like charm. http://wooassist.com/how-to-change-the-number-of-related-products-in-woocommerce/

For me the following worked by setting the priority parameter:

add_filter( 'woocommerce_output_related_products_args', 'cwc_change_number_related_products', 20 );

function cwc_change_number_related_products( $args ) {

$args['posts_per_page'] = 2; // # of related products
$args['columns'] = 2; // # of columns per row
return $args;
}

Thanks Derek, that did the trick with priority. So, I wanted to change the number of products per row and ended up with this:

/* ADD 4 RELATED PRODUCTS */
add_filter( 'woocommerce_output_related_products_args', 'jk_related_products_args', 20 );
function jk_related_products_args( $args ) {
$args['posts_per_page'] = 4; // 4 related products
$args['columns'] = 4; // arranged in 4 columns
return $args;
}

I figured I'd post it here in case someone else is looking to do the same.

+1 for suggesting to add the priority to the add_filter() function. Got it working for me!

add_filter( 'woocommerce_output_related_products_args', 'jk_related_products_args', 20 );