How to auto update an acf field based on the condition? - php

Question

I have two custom post types with acf fields.
Custom Post_A, which has 2 fields - title / submitted
Custom Post_B, which has 2 fields - title / percent
Both Post_A and B have the same title (which is the logged in user's name) and they already exist.
When a field ‘submitted’ has the value ‘done’ in Post_A, I need to automatically update a ‘percent’ field with a value ‘50’ in Post_B.
I tried the following code but it doesn't update ‘50’ to Post_B.
Would you please correct my code?
$posts = get_posts(array(
'author' => get_current_user_id(),
'posts_per_page' => -1,
'post_type' => 'post_a',
'meta_key' => 'submitted',
'meta_value' => 'done'
));
$the_query = new WP_Query( $posts );
$the_count = count($the_query);
if($the_count>0) {
foreach ($the_query as $is_done){
$my_post = array();
$my_post['post_type'] = 'post_b';
$my_post['post_title'] = the_title();
// Update the post into the database
$field_key = "field_606cb546456343";
$value = "50";
update_field( $field_key, $value);
}
}
Thank you.

Answer 1

You can use save_post_{$post->post_type} action hook that will trigger on specific post type. check the below code.
function update_post_b( $post_id, $post, $update ){
$post_a_title = get_the_title( $post_id );
$posts = array(
'author' => get_current_user_id(),
'posts_per_page' => -1,
'post_type' => 'post_b'
);
$post_b = new WP_Query( $posts );
if( $post_b->have_posts() ){ while ( $post_b->have_posts() ) { $post_b->the_post();
if( $post_a_title == get_the_title() ){
update_post_meta( get_the_ID(), 'percent', 50 );
}
} }
}
add_action( 'save_post_post_a', 'update_post_b', 10, 3 );
USEFUL LINKS
save_post_{$post->post_type}