Support » Developing with WordPress » Error with multiple get_the_terms

  • Given:
    I have a post in a CPT with 3 custom taxonomies.

    Goal:
    Output the single term from each of the taxonomies for the post.

    Issue:
    Some variables are empty IF I use get_the_terms more than once.

    This code works:

    $terms = get_the_terms( $post->ID , array( 'property_position') );
    	foreach ( $terms as $term ) {
    		$position = $terms[0]->name;
    }

    This code works:

    $type_terms = get_the_terms( $post->ID , array( 'property_type') );
    	foreach ( $type_terms as $term ) {
    		$type = $term->name;
    	}

    But this code does not work – $type is not assigned a variable.

    $terms = get_the_terms( $post->ID , array( 'property_position') );
    	foreach ( $terms as $term ) {
    		$position = $terms[0]->name;
    	}
    	
    	$type_terms = get_the_terms( $post->ID , array( 'property_type') );
    	foreach ( $type_terms as $term ) {
    		$type = $term->name;
    		
    	}

    Any idea what the issue is?

    • This topic was modified 3 years, 3 months ago by Josh Robbs.
Viewing 4 replies - 1 through 4 (of 4 total)
  • Thread Starter Josh Robbs

    (@jwrobbs)

    Here’s a little more information and a more specific question.

    I’m using this template for 3 taxonomies on 1 CPT:
    $vars = get_the_terms( $post->ID , array( ‘tax_slug’) );
    foreach ( $vars as $var) {
    $output_var = $var->name;
    }

    It works the 1st time – whichever taxonomy I put first.

    The 2nd and 3rd iterations don’t work. Here’s a sample var_dump:

    object(WP_Error)#3417 (2) { ["errors"]=> array(1) { ["invalid_taxonomy"]=> array(1) { [0]=> string(17) "Invalid taxonomy." } } ["error_data"]=> array(0) { } }

    To be clear, I’m using this on 3 custom taxonomies. Whichever taxonomy is 1st works – regardless of which taxonomy it is.

    • This reply was modified 3 years, 3 months ago by Josh Robbs.

    I didn’t try it yet, But Did you try wp_get_post_terms instead?? because get_the_terms caching the result

    Actually I don’t like to use those functions for custom post types, You can use get_terms instead so you can pass your post type in the args array

    I DID NOT test that code but according to the docs it should work properly

    $terms = get_terms( array(
        'post_type' => CPT_SLUG,
        'taxonomy' => 'CPT_TAX_SLUG',
        'orderby' => 'name',
        'order' => 'ASC',
        'hide_empty' => false, //can be 1, '1' too
        'fields' => 'all',
        'meta_query' => '',
        'meta_key' => array(),
        'meta_value'=> '',
    
        /* This Should Work too - BUT I think you should remove 'taxonomy' from the main array */
        'tax_query' => array(
            array(
               'taxonomy' => 'YOUR_TAX_SLUG',
               'field' => 'slug',
               'terms' => array( 'action', 'drama', 'comedy' ),
               'operator' => 'NOT IN', /* You can add SQL operator AND | OR | NOT IN ...*/
            )
        )
    
    ) );

    Hope it’s help

    • This reply was modified 3 years, 3 months ago by oxibug. Reason: add code tags

    As on https://developer.wordpress.org/reference/functions/get_the_terms/ it seems like none would work since you are passing an array instead of a string for the taxonomy.
    In your first example, you use a foreach to always get the [0] term.

Viewing 4 replies - 1 through 4 (of 4 total)
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