Empty previous entered field-data on save?

• herrfischer

• July 9, 2015 at 7:25 am

I have a custom post type (for information boxes on the homepage). I give the customer the possibility to choose between 4 layouts (conditions):

1: header + content with colored border
2: header + content with background color (ACF color picker field)
3: header + content with background image (ACF image field)
4: a google map (ACF google map field)

This is how it looks like on the custom post type page:

The problem is: When someone first has chosen e.g. a background-color and saved the post he has to empty the color field before he can choose another option (e. g. background-image), otherwise the new option will be ignored. Is there a possibility to delete entrys of other fields on post saving?

This is my code:

<?php 
	// WP_Query arguments
	$args = array (
		'post_type' => array( 'thema' ),
	);

	// The Query
	$query = new WP_Query( $args );

	// The Loop
	if ( $query->have_posts() ) {
		$elements = [];
		while ( $query->have_posts() ) {
			$query->the_post(); ?>

			<?php ob_start(); ?>

				<?php if(get_field("box_hintergrundfarbe")): ?>
				<!-- box with background color -->
				<article <?php post_class('box cf sameheight-item') ?> style="background-color:<?php the_field("box_hintergrundfarbe"); ?>;">
					<div class="box-inner cf">
						<h2><?php the_title(); ?></h2>
						<?php the_content();  ?>
					</div>
				</article>

				
				<?php elseif(get_field("box_hintergrundbild")): ?>
				<!-- box with background image -->
				<article <?php post_class('box cf sameheight-item') ?> style="background-image: url(<?php the_field("box_hintergrundbild"); ?>)">
					<div class="box-inner light cf">
						<h2><?php the_title(); ?></h2>
						<?php the_content(); ?>
					</div>
				</article>

				
				<?php elseif(get_field("location")): ?>
				<!-- box with google map -->
				<article <?php post_class('box cf sameheight-item') ?>>
					<div class="cf">
						<?php 
							$location = get_field("location");
							if( !empty($location) ):
						?>
						<div class="acf-map">
							<div class="marker" data-lat="<?php echo $location['lat']; ?>" data-lng="<?php echo $location['lng']; ?>"></div>
						</div>
						<?php endif; ?>
					</div>
				</article>

				<?php else: ?>
				<!-- regular box with border -->
				<article <?php post_class('box cf sameheight-item') ?>>
					<div class="box-inner cf" style="border: 3px <?php the_field('farbe_b','option'); ?> solid; border-bottom: none;">
						<h2><?php the_title(); ?></h2>
						<?php the_content();  ?>
					</div>
				</article>

			<?php endif; ?>

			<?php $content = ob_get_clean(); ?>

			<?php
				$element = $content;
				$elements[] = $element;
		}

		if(sizeof($elements)>0) {
			$size = ceil(12 / sizeof($elements));
			if($columns<2) $columns = 2;

			foreach($elements AS $element) {
				echo '<div class="col-md-'.$size.'">'.$element.'</div>';
			}
		}

	} else {
		// no posts found
	}

	// Restore original Post Data
	wp_reset_postdata();
?>

• John Huebner

• July 9, 2015 at 7:43 am

I actually just answered a similar question. http://support.advancedcustomfields.com/forums/topic/delete-repeater-row-not-staying-deleted-with-onditional-logic/

In you case, rather than

if (get_field('content_field'))

You should do

$selection = get_field('radio_field');

if ($selections == 'choice 1') {
   // output code for choice 1
}

if ($selections == 'choice 2') {
   // output code for choice 2
}

Or you could combine them into an if elseif else statement. Of even better yet I would probably choose a switch statement.

• herrfischer

• July 9, 2015 at 11:39 pm

Thanks, i found the “acfsave_post” page, too but did not understand a thing. I will try to empty the tables on save, i don’t want to put ghost data in the DB …

• John Huebner

• July 9, 2015 at 11:52 pm

have the filter run after ACF (priority 20)

Then you get use get_field to get the radio field and update_field if you want to clear it but leave the DB entries.

If you want to completely delete the db entry you’ll need to use delete_post_meta() WP function and you will need to delete 2 values.

'your_field_name'

AND

'_your_field_name'

If you are doing this for repeater fields or other nested fields you should look at the database to see how ACF names these types of fields.