Reply To: Using acf_form() to store/fetch a multidimensional array meta_key

• ryanradmk

• February 11, 2016 at 11:27 pm

Hi John,

Thanks again for another response!

I’ve implemented the code that you sent and see that:

1) the ACF form is still loading the row, but the values are empty
2) when i click the ‘update button on the ACF form, I get the following error

Warning: Cannot modify header information - headers already sent by (output started at ~/wp-content/themes/storefront/template-acf.php:12) in ~/wp-includes/pluggable.php on line 1228

In my page template, I’ve the following code to see what’s going on with the arrays:

			<?php
				// Printing both the pre-existing field and the ACF field arrays for debugging/testing
				
				// ACF
				echo 'ACF repeater field array from load value filter:<br><br>';
				if( empty( $load_value ) ){
					echo '<strong>Empty</strong><br><br>';
				} else {
					print_r(array_values($load_value)); // this doesn't match the array for the pre-existing field unless i wrap get_post_meta() in an array() on line 25
					echo '<br><br><hr>';
				};

				// ACF
				$acf_repeater_array = get_field( "my_repeater_field", $post_id);
				echo 'ACF repeater field array:<br><br>';
				if( empty( $acf_repeater_array ) ){
					echo '<strong>Empty</strong><br><br>';
				} else {
					print_r(array_values($acf_repeater_array)); // this doesn't match the array for the pre-existing field unless i wrap get_post_meta() in an array() on line 25
					echo '<br><br><hr>';
				};
			
				// Pre-existing field
				$pre_existing_array = get_post_meta( $post_id, '_wc_booking_availability' );
				echo  'Pre-existing field array:<br><br>';
				if( empty( $pre_existing_array ) ){
					echo '<strong>Empty</strong><br><br>';
				} else {
					print_r(array_values($pre_existing_array));
				};
			?>

ACF repeater field array from load value filter:

Empty

ACF repeater field array:

Array ( [0] => Array ( [type] => custom [bookable] => yes [priority] => 10 [from] => 20160211 [to] => 20160219 ) )

Pre-existing field array:

Array ( [0] => Array ( [0] => Array ( [type] => custom [bookable] => yes [priority] => 10 [from] => 2016-02-11 [to] => 2016-02-19 ) ) ) 

In case this helps, the value pasted directly from phpMyadmin for the pre-existing array field (_wc_booking_availability) is:

a:1:{i:0;a:5:{s:4:"type";s:6:"custom";s:8:"bookable";s:3:"yes";s:8:"priority";i:10;s:4:"from";s:10:"2016-02-11";s:2:"to";s:10:"2016-02-19";}}

I really appreciate your effort and time with helping me on this, so thanks again in advance!