Select multiple images and attach to post content

• ngtrian

• May 22, 2015 at 12:22 am

Hi,

I have created frontend to create post in thread, I using ACF 4.4.2:
http://www.advancedcustomfields.com/resources/create-a-front-end-form/
http://www.advancedcustomfields.com/resources/using-acf_form-to-create-a-new-post/

When I upload multiple files frontend, I can not multiple select images.

How to select multiple image from Field type “Image” & attach images to post content?

This is my code:
newpost.php

<?php acf_form_head(); ?>
<?php 
/*
Template Name: dangbai
*/
get_header(); 
?>
<div id="content">
	<?php while ( have_posts() ) : the_post(); ?>
		<?php 
		acf_form(array(
				'post_id'		  => 'new_post',
				'submit_value'	  => 'Đăng bài',
				'field_groups'	  => array( 305 ),
				'updated_message' => 'Đã đăng bài'
			));
		?>
	<?php endwhile; ?>	
</div>
				
<?php get_footer(); ?>

function.php

function my_pre_save_post( $post_id ) {
	
	// bail early if not a new post
	if( $post_id !== 'new_post' ) {	 
		return $post_id;	
	}
	
	// vars
	$title = $_POST['fields']['field_5558a08e10eed'];
	
	// Create a new post
	$post = array(
		'post_status'	=> 'publish',
		'post_type'		=> 'post',
		'post_title'	=> $title
	);	
	
	// insert the post
	$post_id = wp_insert_post( $post ); 
	
	// update $_POST['return']
    $_POST['return'] = add_query_arg( array('post_id' => $post_id), $_POST['return'] );
	
	// return the new ID
	return $post_id;
}
add_filter('acf/pre_save_post' , 'my_pre_save_post' );

/*
*Save ACF image field to post Featured Image 
*/

// run before ACF saves the $_POST['fields'] data
add_action('acf/save_post', 'my_acf_save_post', 20);

function my_acf_save_post( $post_id ) {
    
    // bail early if no ACF data
    if( empty($_POST['fields']) ) {   
        return;
    }
    
    // specific field value
    $image = $_POST['fields']['field_5558a53d6c205'];
	
		// Bail if image field is empty
	if ( empty($image) ) {
		return;
	}

	// Add the value which is the image ID to the _thumbnail_id meta data for the current post
	add_post_meta( $post_id, '_thumbnail_id', $image );
}

Thanks!

• John Huebner

• June 13, 2015 at 2:33 am

I think I may be a little confused about what you’re trying to do.

An ACF Image field only allows selecting a single image. And as far as I know a post can only have one post_thumbnail add_post_meta( $post_id, '_thumbnail_id', $image );

To select multiple images you’d need to use a repeater to allow adding multiple images in the form.

If you want to add multiple attachments to a post then you should look at https://codex.wordpress.org/Function_Reference/wp_insert_attachment.

If I’m misunderstanding please explain a bit more about what it is you’re trying to do.