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List of slugs from custom post taxonomy for loop

  • Hello

    I have a flexible content field in which I want to display certain events.
    The events that are shown should be selected by a taxonomy field where several entries (cities) of a custom post taxonomy (locations) can be selected by checkbox. (multiselect)
    The return is an Taxonomy object.
    I need a list of the slugs from the selected fields.
    The list should be e.g. like: ‘munich’, ‘london’,

    The relevant Code is

    $locations = get_sub_field('select_locations');
    $loop = new WP_Query( array( 'post_type' => 'events', 'posts_per_page' => 99, 
    		'tax_query' => array(
    						'taxonomy' => 'locations',
    						'field' => 'slug',
    						'terms' => array(
    							/* HERE SHOULD BE THE LIST */
    ) ); 

    I tried several things but I can’t get it working.
    I would be very happy if someone could help me with this.

    Thanks a lot.

    • Helmet

    • March 6, 2020 at 1:27 pm

    I’ve been trying to do something similar. I needed to pull list of category Names and slugs and use them to populate a News feed. I’m sure this is probably not the best way to do it but it worked for me.

    $terms = get_sub_field('filter_news_feed');	
    //set variables for the category slug and category name
    $output = "";
    $nameOutput = "";
    //Loop throuh each item in the array and assign the slug and name values to their variables 
    foreach( $terms as $term ):
    	$output.= $term->slug . ', ';
    	$nameOutput.= $term->name . ', ';
    //trim the last , and space ' ' off of the list
    $trimOutput = rtrim($output,', ');
    //trim the last , and space ' ' off of the list
    $trimNameOutput = rtrim($nameOutput,', ');

    and then to load it into the array:

    $args = array(
      'post_type' => 'post',
      'post_parent' => 0,
      'posts_per_page' => 4,
      'order' => 'DSC',
    //adding 'category_name' => 'slug, slug, slug, etc'; to args array
    $args['category_name'] = $trimOutput;

    Hope that helps….

    • MythosM

    • March 24, 2020 at 1:36 am

    Hey Helmet,

    thank you for your answer. I allready found a solution with the help of a developer.
    It seems quite similar to yours.

    Just for anyone who’s interested:
    $locations = get_sub_field(‘orte_eingrenzen’);
    $locationsSelected = array();
    foreach( $orte as $ort ):
    $locationsSelected[] = $ort->slug;

    $loop = new WP_Query( array( ‘post_type’ => ‘kurse’, ‘posts_per_page’ => 99, ‘meta_key’ => ‘datum’, ‘orderby’ => ‘meta_value’, ‘order’ => ‘ASC’,

    ‘tax_query’ => array(
    ‘taxonomy’ => ‘loacations’,
    ‘field’ => ‘slug’,
    ‘terms’ => $locationsSelected
    ) );

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