• tonhaoln

• in reply to: True/false – When new true, update the rest to false
• July 28, 2016 at 2:27 pm

Hi there,
I can’t make this work.
I have a true/false field called “best of week” in my posts. How exactly do you find the field id?

Here is my code:

add_action('acf/save_post', 'my_acf_save_post', 1);
function my_acf_save_post( $post_id ){
	$fields = false;
	/* Here I added a if statement so the code runs only for a defined category */
	if(get_post( $post_id )){
		// Check if Fields have been posted
		if ( isset( $_POST['fields'] ) ) {
			$fieldId = 'acf-field_57872ec102054-1';
			$fields = $_POST['fields'];
			// Store the true/false field on a variable (change the "Field_xxx" id by yours)
			$BestWeek = $fields[$fieldId];
			// Check if the true/false field is true
			if ( $BestWeek ) {
				/* If it's set to true do a WP_query so you can get the other post that have $BestWeek set to true here you may want to change the 'cat' to whatever your is (or to all) in the meta query you should use your true/false field name as a key */
				$args = array(
					'post_type' => 'post', 
					'meta_query' => array(
						array(
							'key' => 'best_of_week',
							'value' => '1',
							'compare' => '=='
						)
					)
				);
				$post_query = new WP_Query( $args );
				/* Here we check if the query returns post (if it does it will return featured posts) */
				if ( $post_query->have_posts() ) {
					while ( $post_query->have_posts() ) {
						$post_query->the_post();
						/* For each posts we update the true/false field and set it to false */
						update_field( $fieldId, false, get_the_ID() );
					}
				}
			}
		}
	}
}