get_field() from WP_Term returns ID on archive page

• proov

• February 13, 2017 at 8:57 am

Hello!

I’m trying to access a custom image field on categories. On regular pages, it works perfectly.

I simply do:

$cat_args = array(
  'taxonomy' => 'category',
  'exclude'  => 1,
  'hide_empty' => true
);
$categories = get_terms( $cat_args );

foreach ($categories as $category) :
  $poster = get_field('category_bg', $category);
  echo $poster ? '<img class="visuallyhidden" src="' . $poster['sizes']['big'] . '" alt="" />' : '';
endforeach;

on the pages, $poster is an object while on the archive page, $poster is a string containing ID :/
More precisions : it’s a custom post archive. Custom Post Type : oeuvre

Thanks 🙂

• John Huebner

• February 16, 2017 at 6:43 am

90% of the time when this happens it is due to a conflict with something. It could be a another plugin in something in your theme. More often then not it has been a pre_get_posts filter that is interfering with the acf queries.

You need to try to narrow down what it is by deactivating plugins and maybe switching themes.

If you do a search in this forum for “image field returns id instead of array” the topics that come up may help you.

• proov

• February 19, 2017 at 3:17 am

Hello @hube2 !

Thank you for your message !

You were right, it was a conflict with a filter function that i’ve added to show Custom Post Types in archives. Otherwise, only posts are displayed :/

This one exactly:

/**
 * Archives.php only shows content of type 'post', but you can alter it to include custom post types.
 * Add this filter to your functions.php file
 * @url https://css-tricks.com/snippets/wordpress/make-archives-php-include-custom-post-types/
 */
function proov_add_custom_types( $query ) {
  if( is_category() || is_tag() && empty( $query->query_vars['suppress_filters'] ) ) {
    $query->set( 'post_type', array(
     'post', 'nav_menu_item', 'oeuvre'
		));
	  return $query;
	}
}
add_filter( 'pre_get_posts', 'proov_add_custom_types' );

I’m gonna try something else ^^

• John Huebner

• February 19, 2017 at 3:27 am

function proov_add_custom_types( $query ) {
  // add condition to make sure it's the the main query
  if( is_category() || is_tag() && empty( $query->query_vars['suppress_filters'] )
      && $query->is_main_query() ) {
    $query->set( 'post_type', array(
     'post', 'nav_menu_item', 'oeuvre'
		));
	  return $query;
	}
}
add_filter( 'pre_get_posts', 'proov_add_custom_types' );

• proov

• February 19, 2017 at 5:03 am

I found a solution on the Codex 🙂

This works 🙂

  /**
  * Registering Post Types
  */
  // Show posts of 'post', 'page' and 'oeuvre' post types on category page
  add_action( 'pre_get_posts', 'add_my_post_types_to_query' );
  
  function add_my_post_types_to_query( $query ) {
    if ( is_category() && $query->is_main_query() )
    $query->set( 'post_type', array(
      'post',
      'page',
      'oeuvre'
    ));
    return $query;
  }