Hack to force credit card collection at checkout for free membership signups?

I think I figured it out. Went to woocommerce/includes/class-wc-cart.php and changed:

` public function needs_payment() {
return apply_filters( ‘woocommerce_cart_needs_payment’, $this->total > 0, $this );
}`
to
`public function needs_payment() {
return apply_filters( ‘woocommerce_cart_needs_payment’, $this->total >= 0, $this );
}`

Saved the edited file in the Woocommerce folder of my child theme but I’d prefer to do this with some code in the child theme functions file if anyone knows how.

You shouldn’t modify the woocommerce files. You’d better use the provided hook in your functions.php like this:


function my_needs_payment( $needs_payment, $cart ) {
if ( !$needs_payment ) {
// Maybe perform some additional checks here using the $cart data
// Then assign 'true' if you want to force payment
$needs_payment = true;
}
return $needs_payment;
}
add_filter( 'woocommerce_cart_needs_payment', 'my_needs_payment' ), 10, 2 );