acf_form, new_post, tax_input requires to be logged in

• aatospaja

• September 30, 2015 at 7:13 pm

I’ve been baffled with a mystery why doesn’t submission of a post from the frontend work when a normal user does it. The following code works perfect (it’s part of acf_form function) when I’m logged in but it doesn’t work otherwise.

'new_post'		=> array(
						'post_type'		=> 'my_custom_post_name',
            'post_status'    => 'pending',
            'tax_input'  => array('my_custom_taxonomy' => array(82)),
            'post_author'    => 6
					),

Turns out, it seems that the problem is tax_input as described here:

http://islegend.com/development/wordpress-using-tax_input-with-wp_insert_post-and-nothings-happens/

“It turns out that ‘tax_input’ does not work if a user does not have the capabilities to work with a custom taxonomy.”

Is there anyway to get this to work for all users…

• aatospaja

• September 30, 2015 at 7:44 pm

Actually I solved this now.

post_author (id 6) here is a specific user account for front end posting. I increased it’s capabilities to handle taxonomies and all is well now.

• OmniBon

• April 23, 2018 at 2:54 pm

This solution didn’t work for me. I made the post author id 1 or the admin and got the same result AFTER spending a LONG time trying to make my “guest author” have the right capabilities without success. I am using CPT UI to make my taxonomies and post types. For not logged in users save_post was my solution…

Make your own inputs with whatever values you want:

$htmlAfter = '<input type="hidden" name="tax_name" id="tax_name" value="ENTER_MAIN_TAXONOMY_SLUG">';
$htmlAfter .= '<input type="hidden" name="tax_slug" id="tax_slug" value="ENTER_INDIVIDUAL_TAXONOMY_SLUG">';

Add those inputs to acf_form function with html_after_fields parameter (or html_before_fields):

'html_after_fields' => $htmlAfter

Save those values ($_POST) as you wish with save_post action:

function my_acf_save_post( $post_id ) {
    
   if(isset($_POST['tax_name']) && isset($_POST['tax_slug'])) {
	 wp_set_object_terms( $post_id, $_POST['tax_slug'], $_POST['tax_name'], true );
	}
    
}

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